manlio_perillo:
> Don Stewart ha scritto:
>> [...]
>> {-# LANGUAGE OverloadedStrings #-}
>>
>> import qualified Data.ByteString.Char8 as C
>>
>> isMatch :: C.ByteString -> Bool
>> isMatch "match" = True
>> isMatch _ = False
>>
>> main = print . map isMatch . C.lines =<< C.getContents
>>
>
> What is the reason why instance declarations for IsString class are not
> defined for available ByteStrings?
>
> I need to define it by myself.
They're exported from Data.ByteString.Char8
_______________________________________________
Haskell-Cafe mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/haskell-cafe
