On Tue, Apr 24, 2012 at 12:35 PM, Yitzchak Gale <[email protected]> wrote:
> Markus Läll wrote:
>> You do know, that you already *can* have safe Text and ByteString from
>> an overloaded string literal.
>
> Yes, the IsString instances for Text and ByteString are safe
> (I hope).
>
> But in order to use them, I have to turn on OverloadedStrings.
> That could cause other string literals in the same module
> to throw exceptions at run time.
>
> -Yitz
>
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Actually, the ByteString instance is arguably unsafe as well:
{-# LANGUAGE OverloadedStrings #-}
import qualified Data.ByteString.Char8 as S8
main = S8.putStrLn "שלום"
It would be nice if usage of characters outside of the 0-255 range
could be caught at compile time.
Michael
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