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- scanner is a fast non-backtracking incremental combinator parsing
- library for bytestrings.
- It is often convenient to use backtracking to parse some sophisticated
- input. Unfortunately it kills performance, so usually you should
- avoid backtracking.
- Often (actually always, but it could be too hard sometimes) you can
- implement your parser without any backtracking. It that case all
- the bookkeeping usual parser combinators do becomes unnecessary.
- The scanner library is designed for such cases. It is often 2 times
- faster than attoparsec.
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