Nim/tests/generics/tforwardgeneric.nim

discard """
  output: "1.1 11\n42\n0"
  ccodecheck: "!@'ClEnv'"
"""

proc p[T](a, b: T): T

echo p(0.9, 0.1), " ", p(9, 1)

proc p[T](a, b: T): T =
  let c = b
  result = a + b + c

# https://github.com/nim-lang/Nim/issues/4908
proc foo(t: typedesc[int]): int
proc bar(): int = foo(int)
proc foo(t: typedesc[int]): int =
  return 0

# https://github.com/nim-lang/Nim/issues/4104
proc print[T](t: T) # Error: implementation of 'print.print(t: int)' expected
print 42 # moving this line after the implementation fixes the error,
         # but such behaviour makes forward declaration pointless
proc print[T](t: T) =
  echo t

echo bar()