Re: [Haskell-cafe] Arrow transformers: how to make them wright?

2010-08-31 Thread David Menendez
On Tue, Aug 31, 2010 at 2:07 PM, Permjacov Evgeniy wrote: >  A Control.Arrow in base package introduces an arrow type, and ghc have > good support for arrow notation. Many things, avaible in monads, are > avaible in arrows as well. There is an arrows package, that introduces > some arrow classes :

Re: [Haskell-cafe] Arrow transformers: how to make them wright?

2010-08-31 Thread Bulat Ziganshin
Hello Permjacov, Tuesday, August 31, 2010, 10:07:38 PM, you wrote: > what operations should be in arrow transformer class? oh, these Russians :) -- Best regards, Bulatmailto:bulat.zigans...@gmail.com ___ Haskell-Cafe m

[Haskell-cafe] Arrow transformers: how to make them wright?

2010-08-31 Thread Permjacov Evgeniy
A Control.Arrow in base package introduces an arrow type, and ghc have good support for arrow notation. Many things, avaible in monads, are avaible in arrows as well. There is an arrows package, that introduces some arrow classes : state, reader, writer and so on. However, it does not introduce sy