Re: [Haskell-cafe] Named captures in regex-pcre?

* Ilya Portnov [2012-01-29 01:26:29+0500]

Hi haskell-cafe.

Is there a way to get named captures from regex using regex-pcre (or maybe other PCRE-package)? For example, I want to write something like

let result = "ab 12 cd" =~ "ab (?P<number>\d+) cd" :: SomeCrypticType

and then have namedCaptures result == [("number", "12")].

I do not see somewhat similar in regex-pcre documentation. It parses such regexs fine, and captures work, but i do not see way to get _named_ captures.

Try the regex-applicative package. {-# LANGUAGE OverloadedStrings #-} import Text.Regex.Applicative import Data.Char main = print $ "ab 12 cd" =~ "ab " *> some (psym isDigit) <* " cd" You can combine several captures into, say, a record using the Applicative instance and thus emulate named captures semantics. -- Roman I. Cheplyaka :: http://ro-che.info/