On 8 May 2010 17:44, Thomas Davie <tom.davie@gmail.com> wrote:

On 8 May 2010, at 17:09, Ozgur Akgun wrote:

I might have misunderstood you, but what about using the existing interact function: http://haskell.org/ghc/docs/6.12.1/html/libraries/base-4.2.0.0/Prelude.html#v:interact

And for your interact, since it is not in the IO monad, you cannot write such a function. [ don't tell him about the unsafePerformIO :) ]

Uh, interact absolutely *is* in the IO monad, and is totally implementable without unsafePerformIO, like this:

Upps now I need to clarify myself I guess.

I said "your interact is not in the IO monad", because the interact OP defined had the type:

interact :: String -> Resp

Which obviously is not in the IO monad, if he is not hiding something in Resp (looks unlikely to me)

interact f = putStr =<< f <$> getContents

Bob