10 Mar
2009
10 Mar
'09
7:43 p.m.
manlio_perillo:
Don Stewart ha scritto:
manlio_perillo:
Hi.
Using normal String type I can define a pattern like:
let foo "baz" = 777 foo "baz" 777
But if I want to use ByteString, what should I do? This seems impossible, since ByteString data constructor is not available.
-XOverloadedStrings
Perfect, thanks.
Is this supported by other Haskell implementations, or planned for Haskell'?
Not as far as I know. It was added to GHC just over 2 years ago, http://article.gmane.org/gmane.comp.lang.haskell.cvs.all/31022 and isn't terribly widely used. Probably ByteString literals are the current main use (along with interesting EDSL applications, which was the original motivation afaik). -- Don