match package:regex-applicative

match :: RE s a -> [s] -> Maybe a
regex-applicative Text.Regex.Applicative
Attempt to match a string of symbols against the regular expression. Note that the whole string (not just some part of it) should be matched. Examples: 
Text.Regex.Applicative> match (sym 'a' <|> sym 'b') "a"
Just 'a'
Text.Regex.Applicative> match (sym 'a' <|> sym 'b') "ab"
Nothing
withMatched :: RE s a -> RE s (a, [s])
regex-applicative Text.Regex.Applicative
Return matched symbols as part of the return value