class_array.rst 69 KB

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  1. :github_url: hide
  2. .. DO NOT EDIT THIS FILE!!!
  3. .. Generated automatically from Godot engine sources.
  4. .. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
  5. .. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/Array.xml.
  6. .. _class_Array:
  7. Array
  8. =====
  9. A built-in data structure that holds a sequence of elements.
  10. .. rst-class:: classref-introduction-group
  11. Description
  12. -----------
  13. An array data structure that can contain a sequence of elements of any type. Elements are accessed by a numerical index starting at 0. Negative indices are used to count from the back (-1 is the last element, -2 is the second to last, etc.).
  14. \ **Example:**\
  15. .. tabs::
  16. .. code-tab:: gdscript
  17. var array = ["One", 2, 3, "Four"]
  18. print(array[0]) # One.
  19. print(array[2]) # 3.
  20. print(array[-1]) # Four.
  21. array[2] = "Three"
  22. print(array[-2]) # Three.
  23. .. code-tab:: csharp
  24. var array = new Godot.Collections.Array{"One", 2, 3, "Four"};
  25. GD.Print(array[0]); // One.
  26. GD.Print(array[2]); // 3.
  27. GD.Print(array[array.Count - 1]); // Four.
  28. array[2] = "Three";
  29. GD.Print(array[array.Count - 2]); // Three.
  30. Arrays can be concatenated using the ``+`` operator:
  31. .. tabs::
  32. .. code-tab:: gdscript
  33. var array1 = ["One", 2]
  34. var array2 = [3, "Four"]
  35. print(array1 + array2) # ["One", 2, 3, "Four"]
  36. .. code-tab:: csharp
  37. // Array concatenation is not possible with C# arrays, but is with Godot.Collections.Array.
  38. var array1 = new Godot.Collections.Array{"One", 2};
  39. var array2 = new Godot.Collections.Array{3, "Four"};
  40. GD.Print(array1 + array2); // Prints [One, 2, 3, Four]
  41. \ **Note:** Arrays are always passed by reference. To get a copy of an array that can be modified independently of the original array, use :ref:`duplicate<class_Array_method_duplicate>`.
  42. \ **Note:** Erasing elements while iterating over arrays is **not** supported and will result in unpredictable behavior.
  43. .. note::
  44. There are notable differences when using this API with C#. See :ref:`doc_c_sharp_differences` for more information.
  45. .. rst-class:: classref-reftable-group
  46. Constructors
  47. ------------
  48. .. table::
  49. :widths: auto
  50. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  51. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** **)** |
  52. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  53. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`Array<class_Array>` base, :ref:`int<class_int>` type, :ref:`StringName<class_StringName>` class_name, :ref:`Variant<class_Variant>` script **)** |
  54. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  55. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`Array<class_Array>` from **)** |
  56. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  57. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`PackedByteArray<class_PackedByteArray>` from **)** |
  58. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  59. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`PackedColorArray<class_PackedColorArray>` from **)** |
  60. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  61. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`PackedFloat32Array<class_PackedFloat32Array>` from **)** |
  62. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  63. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`PackedFloat64Array<class_PackedFloat64Array>` from **)** |
  64. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  65. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`PackedInt32Array<class_PackedInt32Array>` from **)** |
  66. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  67. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`PackedInt64Array<class_PackedInt64Array>` from **)** |
  68. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  69. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`PackedStringArray<class_PackedStringArray>` from **)** |
  70. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  71. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`PackedVector2Array<class_PackedVector2Array>` from **)** |
  72. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  73. | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>` **(** :ref:`PackedVector3Array<class_PackedVector3Array>` from **)** |
  74. +---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  75. .. rst-class:: classref-reftable-group
  76. Methods
  77. -------
  78. .. table::
  79. :widths: auto
  80. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  81. | :ref:`bool<class_bool>` | :ref:`all<class_Array_method_all>` **(** :ref:`Callable<class_Callable>` method **)** |const| |
  82. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  83. | :ref:`bool<class_bool>` | :ref:`any<class_Array_method_any>` **(** :ref:`Callable<class_Callable>` method **)** |const| |
  84. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  85. | void | :ref:`append<class_Array_method_append>` **(** :ref:`Variant<class_Variant>` value **)** |
  86. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  87. | void | :ref:`append_array<class_Array_method_append_array>` **(** :ref:`Array<class_Array>` array **)** |
  88. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  89. | void | :ref:`assign<class_Array_method_assign>` **(** :ref:`Array<class_Array>` array **)** |
  90. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  91. | :ref:`Variant<class_Variant>` | :ref:`back<class_Array_method_back>` **(** **)** |const| |
  92. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  93. | :ref:`int<class_int>` | :ref:`bsearch<class_Array_method_bsearch>` **(** :ref:`Variant<class_Variant>` value, :ref:`bool<class_bool>` before=true **)** |const| |
  94. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  95. | :ref:`int<class_int>` | :ref:`bsearch_custom<class_Array_method_bsearch_custom>` **(** :ref:`Variant<class_Variant>` value, :ref:`Callable<class_Callable>` func, :ref:`bool<class_bool>` before=true **)** |const| |
  96. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  97. | void | :ref:`clear<class_Array_method_clear>` **(** **)** |
  98. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  99. | :ref:`int<class_int>` | :ref:`count<class_Array_method_count>` **(** :ref:`Variant<class_Variant>` value **)** |const| |
  100. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  101. | :ref:`Array<class_Array>` | :ref:`duplicate<class_Array_method_duplicate>` **(** :ref:`bool<class_bool>` deep=false **)** |const| |
  102. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  103. | void | :ref:`erase<class_Array_method_erase>` **(** :ref:`Variant<class_Variant>` value **)** |
  104. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  105. | void | :ref:`fill<class_Array_method_fill>` **(** :ref:`Variant<class_Variant>` value **)** |
  106. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  107. | :ref:`Array<class_Array>` | :ref:`filter<class_Array_method_filter>` **(** :ref:`Callable<class_Callable>` method **)** |const| |
  108. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  109. | :ref:`int<class_int>` | :ref:`find<class_Array_method_find>` **(** :ref:`Variant<class_Variant>` what, :ref:`int<class_int>` from=0 **)** |const| |
  110. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  111. | :ref:`Variant<class_Variant>` | :ref:`front<class_Array_method_front>` **(** **)** |const| |
  112. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  113. | :ref:`int<class_int>` | :ref:`get_typed_builtin<class_Array_method_get_typed_builtin>` **(** **)** |const| |
  114. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  115. | :ref:`StringName<class_StringName>` | :ref:`get_typed_class_name<class_Array_method_get_typed_class_name>` **(** **)** |const| |
  116. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  117. | :ref:`Variant<class_Variant>` | :ref:`get_typed_script<class_Array_method_get_typed_script>` **(** **)** |const| |
  118. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  119. | :ref:`bool<class_bool>` | :ref:`has<class_Array_method_has>` **(** :ref:`Variant<class_Variant>` value **)** |const| |
  120. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  121. | :ref:`int<class_int>` | :ref:`hash<class_Array_method_hash>` **(** **)** |const| |
  122. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  123. | :ref:`int<class_int>` | :ref:`insert<class_Array_method_insert>` **(** :ref:`int<class_int>` position, :ref:`Variant<class_Variant>` value **)** |
  124. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  125. | :ref:`bool<class_bool>` | :ref:`is_empty<class_Array_method_is_empty>` **(** **)** |const| |
  126. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  127. | :ref:`bool<class_bool>` | :ref:`is_read_only<class_Array_method_is_read_only>` **(** **)** |const| |
  128. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  129. | :ref:`bool<class_bool>` | :ref:`is_same_typed<class_Array_method_is_same_typed>` **(** :ref:`Array<class_Array>` array **)** |const| |
  130. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  131. | :ref:`bool<class_bool>` | :ref:`is_typed<class_Array_method_is_typed>` **(** **)** |const| |
  132. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  133. | void | :ref:`make_read_only<class_Array_method_make_read_only>` **(** **)** |
  134. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  135. | :ref:`Array<class_Array>` | :ref:`map<class_Array_method_map>` **(** :ref:`Callable<class_Callable>` method **)** |const| |
  136. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  137. | :ref:`Variant<class_Variant>` | :ref:`max<class_Array_method_max>` **(** **)** |const| |
  138. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  139. | :ref:`Variant<class_Variant>` | :ref:`min<class_Array_method_min>` **(** **)** |const| |
  140. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  141. | :ref:`Variant<class_Variant>` | :ref:`pick_random<class_Array_method_pick_random>` **(** **)** |const| |
  142. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  143. | :ref:`Variant<class_Variant>` | :ref:`pop_at<class_Array_method_pop_at>` **(** :ref:`int<class_int>` position **)** |
  144. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  145. | :ref:`Variant<class_Variant>` | :ref:`pop_back<class_Array_method_pop_back>` **(** **)** |
  146. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  147. | :ref:`Variant<class_Variant>` | :ref:`pop_front<class_Array_method_pop_front>` **(** **)** |
  148. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  149. | void | :ref:`push_back<class_Array_method_push_back>` **(** :ref:`Variant<class_Variant>` value **)** |
  150. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  151. | void | :ref:`push_front<class_Array_method_push_front>` **(** :ref:`Variant<class_Variant>` value **)** |
  152. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  153. | :ref:`Variant<class_Variant>` | :ref:`reduce<class_Array_method_reduce>` **(** :ref:`Callable<class_Callable>` method, :ref:`Variant<class_Variant>` accum=null **)** |const| |
  154. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  155. | void | :ref:`remove_at<class_Array_method_remove_at>` **(** :ref:`int<class_int>` position **)** |
  156. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  157. | :ref:`int<class_int>` | :ref:`resize<class_Array_method_resize>` **(** :ref:`int<class_int>` size **)** |
  158. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  159. | void | :ref:`reverse<class_Array_method_reverse>` **(** **)** |
  160. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  161. | :ref:`int<class_int>` | :ref:`rfind<class_Array_method_rfind>` **(** :ref:`Variant<class_Variant>` what, :ref:`int<class_int>` from=-1 **)** |const| |
  162. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  163. | void | :ref:`shuffle<class_Array_method_shuffle>` **(** **)** |
  164. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  165. | :ref:`int<class_int>` | :ref:`size<class_Array_method_size>` **(** **)** |const| |
  166. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  167. | :ref:`Array<class_Array>` | :ref:`slice<class_Array_method_slice>` **(** :ref:`int<class_int>` begin, :ref:`int<class_int>` end=2147483647, :ref:`int<class_int>` step=1, :ref:`bool<class_bool>` deep=false **)** |const| |
  168. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  169. | void | :ref:`sort<class_Array_method_sort>` **(** **)** |
  170. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  171. | void | :ref:`sort_custom<class_Array_method_sort_custom>` **(** :ref:`Callable<class_Callable>` func **)** |
  172. +-------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  173. .. rst-class:: classref-reftable-group
  174. Operators
  175. ---------
  176. .. table::
  177. :widths: auto
  178. +-------------------------------+-------------------------------------------------------------------------------------------------+
  179. | :ref:`bool<class_bool>` | :ref:`operator !=<class_Array_operator_neq_Array>` **(** :ref:`Array<class_Array>` right **)** |
  180. +-------------------------------+-------------------------------------------------------------------------------------------------+
  181. | :ref:`Array<class_Array>` | :ref:`operator +<class_Array_operator_sum_Array>` **(** :ref:`Array<class_Array>` right **)** |
  182. +-------------------------------+-------------------------------------------------------------------------------------------------+
  183. | :ref:`bool<class_bool>` | :ref:`operator \<<class_Array_operator_lt_Array>` **(** :ref:`Array<class_Array>` right **)** |
  184. +-------------------------------+-------------------------------------------------------------------------------------------------+
  185. | :ref:`bool<class_bool>` | :ref:`operator \<=<class_Array_operator_lte_Array>` **(** :ref:`Array<class_Array>` right **)** |
  186. +-------------------------------+-------------------------------------------------------------------------------------------------+
  187. | :ref:`bool<class_bool>` | :ref:`operator ==<class_Array_operator_eq_Array>` **(** :ref:`Array<class_Array>` right **)** |
  188. +-------------------------------+-------------------------------------------------------------------------------------------------+
  189. | :ref:`bool<class_bool>` | :ref:`operator ><class_Array_operator_gt_Array>` **(** :ref:`Array<class_Array>` right **)** |
  190. +-------------------------------+-------------------------------------------------------------------------------------------------+
  191. | :ref:`bool<class_bool>` | :ref:`operator >=<class_Array_operator_gte_Array>` **(** :ref:`Array<class_Array>` right **)** |
  192. +-------------------------------+-------------------------------------------------------------------------------------------------+
  193. | :ref:`Variant<class_Variant>` | :ref:`operator []<class_Array_operator_idx_int>` **(** :ref:`int<class_int>` index **)** |
  194. +-------------------------------+-------------------------------------------------------------------------------------------------+
  195. .. rst-class:: classref-section-separator
  196. ----
  197. .. rst-class:: classref-descriptions-group
  198. Constructor Descriptions
  199. ------------------------
  200. .. _class_Array_constructor_Array:
  201. .. rst-class:: classref-constructor
  202. :ref:`Array<class_Array>` **Array** **(** **)**
  203. Constructs an empty **Array**.
  204. .. rst-class:: classref-item-separator
  205. ----
  206. .. rst-class:: classref-constructor
  207. :ref:`Array<class_Array>` **Array** **(** :ref:`Array<class_Array>` base, :ref:`int<class_int>` type, :ref:`StringName<class_StringName>` class_name, :ref:`Variant<class_Variant>` script **)**
  208. Creates a typed array from the ``base`` array.
  209. .. rst-class:: classref-item-separator
  210. ----
  211. .. rst-class:: classref-constructor
  212. :ref:`Array<class_Array>` **Array** **(** :ref:`Array<class_Array>` from **)**
  213. Returns the same array as ``from``. If you need a copy of the array, use :ref:`duplicate<class_Array_method_duplicate>`.
  214. .. rst-class:: classref-item-separator
  215. ----
  216. .. rst-class:: classref-constructor
  217. :ref:`Array<class_Array>` **Array** **(** :ref:`PackedByteArray<class_PackedByteArray>` from **)**
  218. Constructs an array from a :ref:`PackedByteArray<class_PackedByteArray>`.
  219. .. rst-class:: classref-item-separator
  220. ----
  221. .. rst-class:: classref-constructor
  222. :ref:`Array<class_Array>` **Array** **(** :ref:`PackedColorArray<class_PackedColorArray>` from **)**
  223. Constructs an array from a :ref:`PackedColorArray<class_PackedColorArray>`.
  224. .. rst-class:: classref-item-separator
  225. ----
  226. .. rst-class:: classref-constructor
  227. :ref:`Array<class_Array>` **Array** **(** :ref:`PackedFloat32Array<class_PackedFloat32Array>` from **)**
  228. Constructs an array from a :ref:`PackedFloat32Array<class_PackedFloat32Array>`.
  229. .. rst-class:: classref-item-separator
  230. ----
  231. .. rst-class:: classref-constructor
  232. :ref:`Array<class_Array>` **Array** **(** :ref:`PackedFloat64Array<class_PackedFloat64Array>` from **)**
  233. Constructs an array from a :ref:`PackedFloat64Array<class_PackedFloat64Array>`.
  234. .. rst-class:: classref-item-separator
  235. ----
  236. .. rst-class:: classref-constructor
  237. :ref:`Array<class_Array>` **Array** **(** :ref:`PackedInt32Array<class_PackedInt32Array>` from **)**
  238. Constructs an array from a :ref:`PackedInt32Array<class_PackedInt32Array>`.
  239. .. rst-class:: classref-item-separator
  240. ----
  241. .. rst-class:: classref-constructor
  242. :ref:`Array<class_Array>` **Array** **(** :ref:`PackedInt64Array<class_PackedInt64Array>` from **)**
  243. Constructs an array from a :ref:`PackedInt64Array<class_PackedInt64Array>`.
  244. .. rst-class:: classref-item-separator
  245. ----
  246. .. rst-class:: classref-constructor
  247. :ref:`Array<class_Array>` **Array** **(** :ref:`PackedStringArray<class_PackedStringArray>` from **)**
  248. Constructs an array from a :ref:`PackedStringArray<class_PackedStringArray>`.
  249. .. rst-class:: classref-item-separator
  250. ----
  251. .. rst-class:: classref-constructor
  252. :ref:`Array<class_Array>` **Array** **(** :ref:`PackedVector2Array<class_PackedVector2Array>` from **)**
  253. Constructs an array from a :ref:`PackedVector2Array<class_PackedVector2Array>`.
  254. .. rst-class:: classref-item-separator
  255. ----
  256. .. rst-class:: classref-constructor
  257. :ref:`Array<class_Array>` **Array** **(** :ref:`PackedVector3Array<class_PackedVector3Array>` from **)**
  258. Constructs an array from a :ref:`PackedVector3Array<class_PackedVector3Array>`.
  259. .. rst-class:: classref-section-separator
  260. ----
  261. .. rst-class:: classref-descriptions-group
  262. Method Descriptions
  263. -------------------
  264. .. _class_Array_method_all:
  265. .. rst-class:: classref-method
  266. :ref:`bool<class_bool>` **all** **(** :ref:`Callable<class_Callable>` method **)** |const|
  267. Calls the provided :ref:`Callable<class_Callable>` on each element in the array and returns ``true`` if the :ref:`Callable<class_Callable>` returns ``true`` for *all* elements in the array. If the :ref:`Callable<class_Callable>` returns ``false`` for one array element or more, this method returns ``false``.
  268. The callable's method should take one :ref:`Variant<class_Variant>` parameter (the current array element) and return a boolean value.
  269. ::
  270. func _ready():
  271. print([6, 10, 6].all(greater_than_5)) # Prints True (3/3 elements evaluate to `true`).
  272. print([4, 10, 4].all(greater_than_5)) # Prints False (1/3 elements evaluate to `true`).
  273. print([4, 4, 4].all(greater_than_5)) # Prints False (0/3 elements evaluate to `true`).
  274. print([].all(greater_than_5)) # Prints True (0/0 elements evaluate to `true`).
  275. print([6, 10, 6].all(func(number): return number > 5)) # Prints True. Same as the first line above, but using lambda function.
  276. func greater_than_5(number):
  277. return number > 5
  278. See also :ref:`any<class_Array_method_any>`, :ref:`filter<class_Array_method_filter>`, :ref:`map<class_Array_method_map>` and :ref:`reduce<class_Array_method_reduce>`.
  279. \ **Note:** Unlike relying on the size of an array returned by :ref:`filter<class_Array_method_filter>`, this method will return as early as possible to improve performance (especially with large arrays).
  280. \ **Note:** For an empty array, this method `always <https://en.wikipedia.org/wiki/Vacuous_truth>`__ returns ``true``.
  281. .. rst-class:: classref-item-separator
  282. ----
  283. .. _class_Array_method_any:
  284. .. rst-class:: classref-method
  285. :ref:`bool<class_bool>` **any** **(** :ref:`Callable<class_Callable>` method **)** |const|
  286. Calls the provided :ref:`Callable<class_Callable>` on each element in the array and returns ``true`` if the :ref:`Callable<class_Callable>` returns ``true`` for *one or more* elements in the array. If the :ref:`Callable<class_Callable>` returns ``false`` for all elements in the array, this method returns ``false``.
  287. The callable's method should take one :ref:`Variant<class_Variant>` parameter (the current array element) and return a boolean value.
  288. ::
  289. func _ready():
  290. print([6, 10, 6].any(greater_than_5)) # Prints True (3 elements evaluate to `true`).
  291. print([4, 10, 4].any(greater_than_5)) # Prints True (1 elements evaluate to `true`).
  292. print([4, 4, 4].any(greater_than_5)) # Prints False (0 elements evaluate to `true`).
  293. print([].any(greater_than_5)) # Prints False (0 elements evaluate to `true`).
  294. print([6, 10, 6].any(func(number): return number > 5)) # Prints True. Same as the first line above, but using lambda function.
  295. func greater_than_5(number):
  296. return number > 5
  297. See also :ref:`all<class_Array_method_all>`, :ref:`filter<class_Array_method_filter>`, :ref:`map<class_Array_method_map>` and :ref:`reduce<class_Array_method_reduce>`.
  298. \ **Note:** Unlike relying on the size of an array returned by :ref:`filter<class_Array_method_filter>`, this method will return as early as possible to improve performance (especially with large arrays).
  299. \ **Note:** For an empty array, this method always returns ``false``.
  300. .. rst-class:: classref-item-separator
  301. ----
  302. .. _class_Array_method_append:
  303. .. rst-class:: classref-method
  304. void **append** **(** :ref:`Variant<class_Variant>` value **)**
  305. Appends an element at the end of the array (alias of :ref:`push_back<class_Array_method_push_back>`).
  306. .. rst-class:: classref-item-separator
  307. ----
  308. .. _class_Array_method_append_array:
  309. .. rst-class:: classref-method
  310. void **append_array** **(** :ref:`Array<class_Array>` array **)**
  311. Appends another array at the end of this array.
  312. ::
  313. var array1 = [1, 2, 3]
  314. var array2 = [4, 5, 6]
  315. array1.append_array(array2)
  316. print(array1) # Prints [1, 2, 3, 4, 5, 6].
  317. .. rst-class:: classref-item-separator
  318. ----
  319. .. _class_Array_method_assign:
  320. .. rst-class:: classref-method
  321. void **assign** **(** :ref:`Array<class_Array>` array **)**
  322. Assigns elements of another ``array`` into the array. Resizes the array to match ``array``. Performs type conversions if the array is typed.
  323. .. rst-class:: classref-item-separator
  324. ----
  325. .. _class_Array_method_back:
  326. .. rst-class:: classref-method
  327. :ref:`Variant<class_Variant>` **back** **(** **)** |const|
  328. Returns the last element of the array. Prints an error and returns ``null`` if the array is empty.
  329. \ **Note:** Calling this function is not the same as writing ``array[-1]``. If the array is empty, accessing by index will pause project execution when running from the editor.
  330. .. rst-class:: classref-item-separator
  331. ----
  332. .. _class_Array_method_bsearch:
  333. .. rst-class:: classref-method
  334. :ref:`int<class_int>` **bsearch** **(** :ref:`Variant<class_Variant>` value, :ref:`bool<class_bool>` before=true **)** |const|
  335. Finds the index of an existing value (or the insertion index that maintains sorting order, if the value is not yet present in the array) using binary search. Optionally, a ``before`` specifier can be passed. If ``false``, the returned index comes after all existing entries of the value in the array.
  336. \ **Note:** Calling :ref:`bsearch<class_Array_method_bsearch>` on an unsorted array results in unexpected behavior.
  337. .. rst-class:: classref-item-separator
  338. ----
  339. .. _class_Array_method_bsearch_custom:
  340. .. rst-class:: classref-method
  341. :ref:`int<class_int>` **bsearch_custom** **(** :ref:`Variant<class_Variant>` value, :ref:`Callable<class_Callable>` func, :ref:`bool<class_bool>` before=true **)** |const|
  342. Finds the index of an existing value (or the insertion index that maintains sorting order, if the value is not yet present in the array) using binary search and a custom comparison method. Optionally, a ``before`` specifier can be passed. If ``false``, the returned index comes after all existing entries of the value in the array. The custom method receives two arguments (an element from the array and the value searched for) and must return ``true`` if the first argument is less than the second, and return ``false`` otherwise.
  343. \ **Note:** Calling :ref:`bsearch_custom<class_Array_method_bsearch_custom>` on an unsorted array results in unexpected behavior.
  344. .. rst-class:: classref-item-separator
  345. ----
  346. .. _class_Array_method_clear:
  347. .. rst-class:: classref-method
  348. void **clear** **(** **)**
  349. Clears the array. This is equivalent to using :ref:`resize<class_Array_method_resize>` with a size of ``0``.
  350. .. rst-class:: classref-item-separator
  351. ----
  352. .. _class_Array_method_count:
  353. .. rst-class:: classref-method
  354. :ref:`int<class_int>` **count** **(** :ref:`Variant<class_Variant>` value **)** |const|
  355. Returns the number of times an element is in the array.
  356. .. rst-class:: classref-item-separator
  357. ----
  358. .. _class_Array_method_duplicate:
  359. .. rst-class:: classref-method
  360. :ref:`Array<class_Array>` **duplicate** **(** :ref:`bool<class_bool>` deep=false **)** |const|
  361. Returns a copy of the array.
  362. If ``deep`` is ``true``, a deep copy is performed: all nested arrays and dictionaries are duplicated and will not be shared with the original array. If ``false``, a shallow copy is made and references to the original nested arrays and dictionaries are kept, so that modifying a sub-array or dictionary in the copy will also impact those referenced in the source array. Note that any :ref:`Object<class_Object>`-derived elements will be shallow copied regardless of the ``deep`` setting.
  363. .. rst-class:: classref-item-separator
  364. ----
  365. .. _class_Array_method_erase:
  366. .. rst-class:: classref-method
  367. void **erase** **(** :ref:`Variant<class_Variant>` value **)**
  368. Removes the first occurrence of a value from the array. If the value does not exist in the array, nothing happens. To remove an element by index, use :ref:`remove_at<class_Array_method_remove_at>` instead.
  369. \ **Note:** This method acts in-place and doesn't return a modified array.
  370. \ **Note:** On large arrays, this method will be slower if the removed element is close to the beginning of the array (index 0). This is because all elements placed after the removed element have to be reindexed.
  371. \ **Note:** Do not erase entries while iterating over the array.
  372. .. rst-class:: classref-item-separator
  373. ----
  374. .. _class_Array_method_fill:
  375. .. rst-class:: classref-method
  376. void **fill** **(** :ref:`Variant<class_Variant>` value **)**
  377. Assigns the given value to all elements in the array. This can typically be used together with :ref:`resize<class_Array_method_resize>` to create an array with a given size and initialized elements:
  378. .. tabs::
  379. .. code-tab:: gdscript
  380. var array = []
  381. array.resize(10)
  382. array.fill(0) # Initialize the 10 elements to 0.
  383. .. code-tab:: csharp
  384. var array = new Godot.Collections.Array();
  385. array.Resize(10);
  386. array.Fill(0); // Initialize the 10 elements to 0.
  387. \ **Note:** If ``value`` is of a reference type (:ref:`Object<class_Object>`-derived, **Array**, :ref:`Dictionary<class_Dictionary>`, etc.) then the array is filled with the references to the same object, i.e. no duplicates are created.
  388. .. rst-class:: classref-item-separator
  389. ----
  390. .. _class_Array_method_filter:
  391. .. rst-class:: classref-method
  392. :ref:`Array<class_Array>` **filter** **(** :ref:`Callable<class_Callable>` method **)** |const|
  393. Calls the provided :ref:`Callable<class_Callable>` on each element in the array and returns a new array with the elements for which the method returned ``true``.
  394. The callable's method should take one :ref:`Variant<class_Variant>` parameter (the current array element) and return a boolean value.
  395. ::
  396. func _ready():
  397. print([1, 2, 3].filter(remove_1)) # Prints [2, 3].
  398. print([1, 2, 3].filter(func(number): return number != 1)) # Same as above, but using lambda function.
  399. func remove_1(number):
  400. return number != 1
  401. See also :ref:`any<class_Array_method_any>`, :ref:`all<class_Array_method_all>`, :ref:`map<class_Array_method_map>` and :ref:`reduce<class_Array_method_reduce>`.
  402. .. rst-class:: classref-item-separator
  403. ----
  404. .. _class_Array_method_find:
  405. .. rst-class:: classref-method
  406. :ref:`int<class_int>` **find** **(** :ref:`Variant<class_Variant>` what, :ref:`int<class_int>` from=0 **)** |const|
  407. Searches the array for a value and returns its index or ``-1`` if not found. Optionally, the initial search index can be passed.
  408. .. rst-class:: classref-item-separator
  409. ----
  410. .. _class_Array_method_front:
  411. .. rst-class:: classref-method
  412. :ref:`Variant<class_Variant>` **front** **(** **)** |const|
  413. Returns the first element of the array. Prints an error and returns ``null`` if the array is empty.
  414. \ **Note:** Calling this function is not the same as writing ``array[0]``. If the array is empty, accessing by index will pause project execution when running from the editor.
  415. .. rst-class:: classref-item-separator
  416. ----
  417. .. _class_Array_method_get_typed_builtin:
  418. .. rst-class:: classref-method
  419. :ref:`int<class_int>` **get_typed_builtin** **(** **)** |const|
  420. Returns the :ref:`Variant.Type<enum_@GlobalScope_Variant.Type>` constant for a typed array. If the **Array** is not typed, returns :ref:`@GlobalScope.TYPE_NIL<class_@GlobalScope_constant_TYPE_NIL>`.
  421. .. rst-class:: classref-item-separator
  422. ----
  423. .. _class_Array_method_get_typed_class_name:
  424. .. rst-class:: classref-method
  425. :ref:`StringName<class_StringName>` **get_typed_class_name** **(** **)** |const|
  426. Returns a class name of a typed **Array** of type :ref:`@GlobalScope.TYPE_OBJECT<class_@GlobalScope_constant_TYPE_OBJECT>`.
  427. .. rst-class:: classref-item-separator
  428. ----
  429. .. _class_Array_method_get_typed_script:
  430. .. rst-class:: classref-method
  431. :ref:`Variant<class_Variant>` **get_typed_script** **(** **)** |const|
  432. Returns the script associated with a typed array tied to a class name.
  433. .. rst-class:: classref-item-separator
  434. ----
  435. .. _class_Array_method_has:
  436. .. rst-class:: classref-method
  437. :ref:`bool<class_bool>` **has** **(** :ref:`Variant<class_Variant>` value **)** |const|
  438. Returns ``true`` if the array contains the given value.
  439. .. tabs::
  440. .. code-tab:: gdscript
  441. print(["inside", 7].has("inside")) # True
  442. print(["inside", 7].has("outside")) # False
  443. print(["inside", 7].has(7)) # True
  444. print(["inside", 7].has("7")) # False
  445. .. code-tab:: csharp
  446. var arr = new Godot.Collections.Array { "inside", 7 };
  447. // has is renamed to Contains
  448. GD.Print(arr.Contains("inside")); // True
  449. GD.Print(arr.Contains("outside")); // False
  450. GD.Print(arr.Contains(7)); // True
  451. GD.Print(arr.Contains("7")); // False
  452. \ **Note:** This is equivalent to using the ``in`` operator as follows:
  453. .. tabs::
  454. .. code-tab:: gdscript
  455. # Will evaluate to `true`.
  456. if 2 in [2, 4, 6, 8]:
  457. print("Contains!")
  458. .. code-tab:: csharp
  459. // As there is no "in" keyword in C#, you have to use Contains
  460. var array = new Godot.Collections.Array { 2, 4, 6, 8 };
  461. if (array.Contains(2))
  462. {
  463. GD.Print("Contains!");
  464. }
  465. .. rst-class:: classref-item-separator
  466. ----
  467. .. _class_Array_method_hash:
  468. .. rst-class:: classref-method
  469. :ref:`int<class_int>` **hash** **(** **)** |const|
  470. Returns a hashed 32-bit integer value representing the array and its contents.
  471. \ **Note:** **Array**\ s with equal content will always produce identical hash values. However, the reverse is not true. Returning identical hash values does *not* imply the arrays are equal, because different arrays can have identical hash values due to hash collisions.
  472. .. rst-class:: classref-item-separator
  473. ----
  474. .. _class_Array_method_insert:
  475. .. rst-class:: classref-method
  476. :ref:`int<class_int>` **insert** **(** :ref:`int<class_int>` position, :ref:`Variant<class_Variant>` value **)**
  477. Inserts a new element at a given position in the array. The position must be valid, or at the end of the array (``pos == size()``). Returns :ref:`@GlobalScope.OK<class_@GlobalScope_constant_OK>` on success, or one of the other :ref:`Error<enum_@GlobalScope_Error>` values if the operation failed.
  478. \ **Note:** This method acts in-place and doesn't return a modified array.
  479. \ **Note:** On large arrays, this method will be slower if the inserted element is close to the beginning of the array (index 0). This is because all elements placed after the newly inserted element have to be reindexed.
  480. .. rst-class:: classref-item-separator
  481. ----
  482. .. _class_Array_method_is_empty:
  483. .. rst-class:: classref-method
  484. :ref:`bool<class_bool>` **is_empty** **(** **)** |const|
  485. Returns ``true`` if the array is empty.
  486. .. rst-class:: classref-item-separator
  487. ----
  488. .. _class_Array_method_is_read_only:
  489. .. rst-class:: classref-method
  490. :ref:`bool<class_bool>` **is_read_only** **(** **)** |const|
  491. Returns ``true`` if the array is read-only. See :ref:`make_read_only<class_Array_method_make_read_only>`. Arrays are automatically read-only if declared with ``const`` keyword.
  492. .. rst-class:: classref-item-separator
  493. ----
  494. .. _class_Array_method_is_same_typed:
  495. .. rst-class:: classref-method
  496. :ref:`bool<class_bool>` **is_same_typed** **(** :ref:`Array<class_Array>` array **)** |const|
  497. Returns ``true`` if the array is typed the same as ``array``.
  498. .. rst-class:: classref-item-separator
  499. ----
  500. .. _class_Array_method_is_typed:
  501. .. rst-class:: classref-method
  502. :ref:`bool<class_bool>` **is_typed** **(** **)** |const|
  503. Returns ``true`` if the array is typed. Typed arrays can only store elements of their associated type and provide type safety for the ``[]`` operator. Methods of typed array still return :ref:`Variant<class_Variant>`.
  504. .. rst-class:: classref-item-separator
  505. ----
  506. .. _class_Array_method_make_read_only:
  507. .. rst-class:: classref-method
  508. void **make_read_only** **(** **)**
  509. Makes the array read-only, i.e. disabled modifying of the array's elements. Does not apply to nested content, e.g. content of nested arrays.
  510. .. rst-class:: classref-item-separator
  511. ----
  512. .. _class_Array_method_map:
  513. .. rst-class:: classref-method
  514. :ref:`Array<class_Array>` **map** **(** :ref:`Callable<class_Callable>` method **)** |const|
  515. Calls the provided :ref:`Callable<class_Callable>` for each element in the array and returns a new array filled with values returned by the method.
  516. The callable's method should take one :ref:`Variant<class_Variant>` parameter (the current array element) and can return any :ref:`Variant<class_Variant>`.
  517. ::
  518. func _ready():
  519. print([1, 2, 3].map(negate)) # Prints [-1, -2, -3].
  520. print([1, 2, 3].map(func(number): return -number)) # Same as above, but using lambda function.
  521. func negate(number):
  522. return -number
  523. See also :ref:`filter<class_Array_method_filter>`, :ref:`reduce<class_Array_method_reduce>`, :ref:`any<class_Array_method_any>` and :ref:`all<class_Array_method_all>`.
  524. .. rst-class:: classref-item-separator
  525. ----
  526. .. _class_Array_method_max:
  527. .. rst-class:: classref-method
  528. :ref:`Variant<class_Variant>` **max** **(** **)** |const|
  529. Returns the maximum value contained in the array if all elements are of comparable types. If the elements can't be compared, ``null`` is returned.
  530. To find the maximum value using a custom comparator, you can use :ref:`reduce<class_Array_method_reduce>`. In this example every array element is checked and the first maximum value is returned:
  531. ::
  532. func _ready():
  533. var arr = [Vector2(0, 1), Vector2(2, 0), Vector2(1, 1), Vector2(1, 0), Vector2(0, 2)]
  534. # In this example we compare the lengths.
  535. print(arr.reduce(func(max, val): return val if is_length_greater(val, max) else max))
  536. func is_length_greater(a, b):
  537. return a.length() > b.length()
  538. .. rst-class:: classref-item-separator
  539. ----
  540. .. _class_Array_method_min:
  541. .. rst-class:: classref-method
  542. :ref:`Variant<class_Variant>` **min** **(** **)** |const|
  543. Returns the minimum value contained in the array if all elements are of comparable types. If the elements can't be compared, ``null`` is returned.
  544. See also :ref:`max<class_Array_method_max>` for an example of using a custom comparator.
  545. .. rst-class:: classref-item-separator
  546. ----
  547. .. _class_Array_method_pick_random:
  548. .. rst-class:: classref-method
  549. :ref:`Variant<class_Variant>` **pick_random** **(** **)** |const|
  550. Returns a random value from the target array. Prints an error and returns ``null`` if the array is empty.
  551. .. tabs::
  552. .. code-tab:: gdscript
  553. var array: Array[int] = [1, 2, 3, 4]
  554. print(array.pick_random()) # Prints either of the four numbers.
  555. .. code-tab:: csharp
  556. var array = new Godot.Collections.Array { 1, 2, 3, 4 };
  557. GD.Print(array.PickRandom()); // Prints either of the four numbers.
  558. .. rst-class:: classref-item-separator
  559. ----
  560. .. _class_Array_method_pop_at:
  561. .. rst-class:: classref-method
  562. :ref:`Variant<class_Variant>` **pop_at** **(** :ref:`int<class_int>` position **)**
  563. Removes and returns the element of the array at index ``position``. If negative, ``position`` is considered relative to the end of the array. Leaves the array untouched and returns ``null`` if the array is empty or if it's accessed out of bounds. An error message is printed when the array is accessed out of bounds, but not when the array is empty.
  564. \ **Note:** On large arrays, this method can be slower than :ref:`pop_back<class_Array_method_pop_back>` as it will reindex the array's elements that are located after the removed element. The larger the array and the lower the index of the removed element, the slower :ref:`pop_at<class_Array_method_pop_at>` will be.
  565. .. rst-class:: classref-item-separator
  566. ----
  567. .. _class_Array_method_pop_back:
  568. .. rst-class:: classref-method
  569. :ref:`Variant<class_Variant>` **pop_back** **(** **)**
  570. Removes and returns the last element of the array. Returns ``null`` if the array is empty, without printing an error message. See also :ref:`pop_front<class_Array_method_pop_front>`.
  571. .. rst-class:: classref-item-separator
  572. ----
  573. .. _class_Array_method_pop_front:
  574. .. rst-class:: classref-method
  575. :ref:`Variant<class_Variant>` **pop_front** **(** **)**
  576. Removes and returns the first element of the array. Returns ``null`` if the array is empty, without printing an error message. See also :ref:`pop_back<class_Array_method_pop_back>`.
  577. \ **Note:** On large arrays, this method is much slower than :ref:`pop_back<class_Array_method_pop_back>` as it will reindex all the array's elements every time it's called. The larger the array, the slower :ref:`pop_front<class_Array_method_pop_front>` will be.
  578. .. rst-class:: classref-item-separator
  579. ----
  580. .. _class_Array_method_push_back:
  581. .. rst-class:: classref-method
  582. void **push_back** **(** :ref:`Variant<class_Variant>` value **)**
  583. Appends an element at the end of the array. See also :ref:`push_front<class_Array_method_push_front>`.
  584. .. rst-class:: classref-item-separator
  585. ----
  586. .. _class_Array_method_push_front:
  587. .. rst-class:: classref-method
  588. void **push_front** **(** :ref:`Variant<class_Variant>` value **)**
  589. Adds an element at the beginning of the array. See also :ref:`push_back<class_Array_method_push_back>`.
  590. \ **Note:** On large arrays, this method is much slower than :ref:`push_back<class_Array_method_push_back>` as it will reindex all the array's elements every time it's called. The larger the array, the slower :ref:`push_front<class_Array_method_push_front>` will be.
  591. .. rst-class:: classref-item-separator
  592. ----
  593. .. _class_Array_method_reduce:
  594. .. rst-class:: classref-method
  595. :ref:`Variant<class_Variant>` **reduce** **(** :ref:`Callable<class_Callable>` method, :ref:`Variant<class_Variant>` accum=null **)** |const|
  596. Calls the provided :ref:`Callable<class_Callable>` for each element in array and accumulates the result in ``accum``.
  597. The callable's method takes two arguments: the current value of ``accum`` and the current array element. If ``accum`` is ``null`` (default value), the iteration will start from the second element, with the first one used as initial value of ``accum``.
  598. ::
  599. func _ready():
  600. print([1, 2, 3].reduce(sum, 10)) # Prints 16.
  601. print([1, 2, 3].reduce(func(accum, number): return accum + number, 10)) # Same as above, but using lambda function.
  602. func sum(accum, number):
  603. return accum + number
  604. See also :ref:`map<class_Array_method_map>`, :ref:`filter<class_Array_method_filter>`, :ref:`any<class_Array_method_any>` and :ref:`all<class_Array_method_all>`.
  605. .. rst-class:: classref-item-separator
  606. ----
  607. .. _class_Array_method_remove_at:
  608. .. rst-class:: classref-method
  609. void **remove_at** **(** :ref:`int<class_int>` position **)**
  610. Removes an element from the array by index. If the index does not exist in the array, nothing happens. To remove an element by searching for its value, use :ref:`erase<class_Array_method_erase>` instead.
  611. \ **Note:** This method acts in-place and doesn't return a modified array.
  612. \ **Note:** On large arrays, this method will be slower if the removed element is close to the beginning of the array (index 0). This is because all elements placed after the removed element have to be reindexed.
  613. \ **Note:** ``position`` cannot be negative. To remove an element relative to the end of the array, use ``arr.remove_at(arr.size() - (i + 1))``. To remove the last element from the array without returning the value, use ``arr.resize(arr.size() - 1)``.
  614. .. rst-class:: classref-item-separator
  615. ----
  616. .. _class_Array_method_resize:
  617. .. rst-class:: classref-method
  618. :ref:`int<class_int>` **resize** **(** :ref:`int<class_int>` size **)**
  619. Resizes the array to contain a different number of elements. If the array size is smaller, elements are cleared, if bigger, new elements are ``null``. Returns :ref:`@GlobalScope.OK<class_@GlobalScope_constant_OK>` on success, or one of the other :ref:`Error<enum_@GlobalScope_Error>` values if the operation failed.
  620. \ **Note:** This method acts in-place and doesn't return a modified array.
  621. .. rst-class:: classref-item-separator
  622. ----
  623. .. _class_Array_method_reverse:
  624. .. rst-class:: classref-method
  625. void **reverse** **(** **)**
  626. Reverses the order of the elements in the array.
  627. .. rst-class:: classref-item-separator
  628. ----
  629. .. _class_Array_method_rfind:
  630. .. rst-class:: classref-method
  631. :ref:`int<class_int>` **rfind** **(** :ref:`Variant<class_Variant>` what, :ref:`int<class_int>` from=-1 **)** |const|
  632. Searches the array in reverse order. Optionally, a start search index can be passed. If negative, the start index is considered relative to the end of the array.
  633. .. rst-class:: classref-item-separator
  634. ----
  635. .. _class_Array_method_shuffle:
  636. .. rst-class:: classref-method
  637. void **shuffle** **(** **)**
  638. Shuffles the array such that the items will have a random order. This method uses the global random number generator common to methods such as :ref:`@GlobalScope.randi<class_@GlobalScope_method_randi>`. Call :ref:`@GlobalScope.randomize<class_@GlobalScope_method_randomize>` to ensure that a new seed will be used each time if you want non-reproducible shuffling.
  639. .. rst-class:: classref-item-separator
  640. ----
  641. .. _class_Array_method_size:
  642. .. rst-class:: classref-method
  643. :ref:`int<class_int>` **size** **(** **)** |const|
  644. Returns the number of elements in the array.
  645. .. rst-class:: classref-item-separator
  646. ----
  647. .. _class_Array_method_slice:
  648. .. rst-class:: classref-method
  649. :ref:`Array<class_Array>` **slice** **(** :ref:`int<class_int>` begin, :ref:`int<class_int>` end=2147483647, :ref:`int<class_int>` step=1, :ref:`bool<class_bool>` deep=false **)** |const|
  650. Returns the slice of the **Array**, from ``begin`` (inclusive) to ``end`` (exclusive), as a new **Array**.
  651. The absolute value of ``begin`` and ``end`` will be clamped to the array size, so the default value for ``end`` makes it slice to the size of the array by default (i.e. ``arr.slice(1)`` is a shorthand for ``arr.slice(1, arr.size())``).
  652. If either ``begin`` or ``end`` are negative, they will be relative to the end of the array (i.e. ``arr.slice(0, -2)`` is a shorthand for ``arr.slice(0, arr.size() - 2)``).
  653. If specified, ``step`` is the relative index between source elements. It can be negative, then ``begin`` must be higher than ``end``. For example, ``[0, 1, 2, 3, 4, 5].slice(5, 1, -2)`` returns ``[5, 3]``.
  654. If ``deep`` is true, each element will be copied by value rather than by reference.
  655. \ **Note:** To include the first element when ``step`` is negative, use ``arr.slice(begin, -arr.size() - 1, step)`` (i.e. ``[0, 1, 2].slice(1, -4, -1)`` returns ``[1, 0]``).
  656. .. rst-class:: classref-item-separator
  657. ----
  658. .. _class_Array_method_sort:
  659. .. rst-class:: classref-method
  660. void **sort** **(** **)**
  661. Sorts the array.
  662. \ **Note:** The sorting algorithm used is not `stable <https://en.wikipedia.org/wiki/Sorting_algorithm#Stability>`__. This means that values considered equal may have their order changed when using :ref:`sort<class_Array_method_sort>`.
  663. \ **Note:** Strings are sorted in alphabetical order (as opposed to natural order). This may lead to unexpected behavior when sorting an array of strings ending with a sequence of numbers. Consider the following example:
  664. .. tabs::
  665. .. code-tab:: gdscript
  666. var strings = ["string1", "string2", "string10", "string11"]
  667. strings.sort()
  668. print(strings) # Prints [string1, string10, string11, string2]
  669. .. code-tab:: csharp
  670. var strings = new Godot.Collections.Array { "string1", "string2", "string10", "string11" };
  671. strings.Sort();
  672. GD.Print(strings); // Prints [string1, string10, string11, string2]
  673. To perform natural order sorting, you can use :ref:`sort_custom<class_Array_method_sort_custom>` with :ref:`String.naturalnocasecmp_to<class_String_method_naturalnocasecmp_to>` as follows:
  674. ::
  675. var strings = ["string1", "string2", "string10", "string11"]
  676. strings.sort_custom(func(a, b): return a.naturalnocasecmp_to(b) < 0)
  677. print(strings) # Prints [string1, string2, string10, string11]
  678. .. rst-class:: classref-item-separator
  679. ----
  680. .. _class_Array_method_sort_custom:
  681. .. rst-class:: classref-method
  682. void **sort_custom** **(** :ref:`Callable<class_Callable>` func **)**
  683. Sorts the array using a custom method. The custom method receives two arguments (a pair of elements from the array) and must return either ``true`` or ``false``. For two elements ``a`` and ``b``, if the given method returns ``true``, element ``b`` will be after element ``a`` in the array.
  684. \ **Note:** The sorting algorithm used is not `stable <https://en.wikipedia.org/wiki/Sorting_algorithm#Stability>`__. This means that values considered equal may have their order changed when using :ref:`sort_custom<class_Array_method_sort_custom>`.
  685. \ **Note:** You cannot randomize the return value as the heapsort algorithm expects a deterministic result. Randomizing the return value will result in unexpected behavior.
  686. .. tabs::
  687. .. code-tab:: gdscript
  688. func sort_ascending(a, b):
  689. if a[0] < b[0]:
  690. return true
  691. return false
  692. func _ready():
  693. var my_items = [[5, "Potato"], [9, "Rice"], [4, "Tomato"]]
  694. my_items.sort_custom(sort_ascending)
  695. print(my_items) # Prints [[4, Tomato], [5, Potato], [9, Rice]].
  696. # Descending, lambda version.
  697. my_items.sort_custom(func(a, b): return a[0] > b[0])
  698. print(my_items) # Prints [[9, Rice], [5, Potato], [4, Tomato]].
  699. .. code-tab:: csharp
  700. // There is no custom sort support for Godot.Collections.Array
  701. .. rst-class:: classref-section-separator
  702. ----
  703. .. rst-class:: classref-descriptions-group
  704. Operator Descriptions
  705. ---------------------
  706. .. _class_Array_operator_neq_Array:
  707. .. rst-class:: classref-operator
  708. :ref:`bool<class_bool>` **operator !=** **(** :ref:`Array<class_Array>` right **)**
  709. Compares the left operand **Array** against the ``right`` **Array**. Returns ``true`` if the sizes or contents of the arrays are *not* equal, ``false`` otherwise.
  710. .. rst-class:: classref-item-separator
  711. ----
  712. .. _class_Array_operator_sum_Array:
  713. .. rst-class:: classref-operator
  714. :ref:`Array<class_Array>` **operator +** **(** :ref:`Array<class_Array>` right **)**
  715. Concatenates two **Array**\ s together, with the ``right`` **Array** being added to the end of the **Array** specified in the left operand. For example, ``[1, 2] + [3, 4]`` results in ``[1, 2, 3, 4]``.
  716. .. rst-class:: classref-item-separator
  717. ----
  718. .. _class_Array_operator_lt_Array:
  719. .. rst-class:: classref-operator
  720. :ref:`bool<class_bool>` **operator <** **(** :ref:`Array<class_Array>` right **)**
  721. Performs a comparison for each index between the left operand **Array** and the ``right`` **Array**, considering the highest common index of both arrays for this comparison: Returns ``true`` on the first occurrence of an element that is less, or ``false`` if the element is greater. Note that depending on the type of data stored, this function may be recursive. If all elements are equal, it compares the length of both arrays and returns ``false`` if the left operand **Array** has fewer elements, otherwise it returns ``true``.
  722. .. rst-class:: classref-item-separator
  723. ----
  724. .. _class_Array_operator_lte_Array:
  725. .. rst-class:: classref-operator
  726. :ref:`bool<class_bool>` **operator <=** **(** :ref:`Array<class_Array>` right **)**
  727. Performs a comparison for each index between the left operand **Array** and the ``right`` **Array**, considering the highest common index of both arrays for this comparison: Returns ``true`` on the first occurrence of an element that is less, or ``false`` if the element is greater. Note that depending on the type of data stored, this function may be recursive. If all elements are equal, it compares the length of both arrays and returns ``true`` if the left operand **Array** has the same number of elements or fewer, otherwise it returns ``false``.
  728. .. rst-class:: classref-item-separator
  729. ----
  730. .. _class_Array_operator_eq_Array:
  731. .. rst-class:: classref-operator
  732. :ref:`bool<class_bool>` **operator ==** **(** :ref:`Array<class_Array>` right **)**
  733. Compares the left operand **Array** against the ``right`` **Array**. Returns ``true`` if the sizes and contents of the arrays are equal, ``false`` otherwise.
  734. .. rst-class:: classref-item-separator
  735. ----
  736. .. _class_Array_operator_gt_Array:
  737. .. rst-class:: classref-operator
  738. :ref:`bool<class_bool>` **operator >** **(** :ref:`Array<class_Array>` right **)**
  739. Performs a comparison for each index between the left operand **Array** and the ``right`` **Array**, considering the highest common index of both arrays for this comparison: Returns ``true`` on the first occurrence of an element that is greater, or ``false`` if the element is less. Note that depending on the type of data stored, this function may be recursive. If all elements are equal, it compares the length of both arrays and returns ``true`` if the ``right`` **Array** has more elements, otherwise it returns ``false``.
  740. .. rst-class:: classref-item-separator
  741. ----
  742. .. _class_Array_operator_gte_Array:
  743. .. rst-class:: classref-operator
  744. :ref:`bool<class_bool>` **operator >=** **(** :ref:`Array<class_Array>` right **)**
  745. Performs a comparison for each index between the left operand **Array** and the ``right`` **Array**, considering the highest common index of both arrays for this comparison: Returns ``true`` on the first occurrence of an element that is greater, or ``false`` if the element is less. Note that depending on the type of data stored, this function may be recursive. If all elements are equal, it compares the length of both arrays and returns ``true`` if the ``right`` **Array** has more or the same number of elements, otherwise it returns ``false``.
  746. .. rst-class:: classref-item-separator
  747. ----
  748. .. _class_Array_operator_idx_int:
  749. .. rst-class:: classref-operator
  750. :ref:`Variant<class_Variant>` **operator []** **(** :ref:`int<class_int>` index **)**
  751. Returns a reference to the element of type :ref:`Variant<class_Variant>` at the specified location. Arrays start at index 0. ``index`` can be a zero or positive value to start from the beginning, or a negative value to start from the end. Out-of-bounds array access causes a run-time error, which will result in an error being printed and the project execution pausing if run from the editor.
  752. .. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
  753. .. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
  754. .. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
  755. .. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
  756. .. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
  757. .. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
  758. .. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`