Don Stewart ha scritto:
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
Then there is something I'm missing.
Your code does not compile.
Thanks Manlio Perillo
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