| Haskell Hierarchical Libraries (regex-base package) | Source code | Contents | Index
Text.Regex.Base.Impl |
Portability | non-portable (Text.Regex.Base needs MPTC+FD)
Stability | experimental
Maintainer | libraries@haskell.org, textregexlazy@personal.mightyreason.com
Description
Helper functions for defining certain instances of RegexContext. These help when defining instances of RegexContext with repeated types:
     instance (RegexLike regex source) => RegexContext regex source source where
runs into overlapping restrictions. To avoid this I have each backend define, for its own Regex type:
     instance RegexContext Regex String String where
       match = polymatch
       matchM = polymatchM
     instance RegexContext Regex ByteString ByteString where
       match = polymatch
       matchM = polymatchM
Documentation
polymatch :: RegexLike a b => a -> b -> b
polymatchM :: (RegexLike a b, Monad m) => a -> b -> m b
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