[Haskell-cafe] Simple network client

[Jules Bean]

Dan Weston wrote:
> Now I'm confused (which happens quite a lot, I'm afraid!)
> 
> Prelude> readFile undefined
> *** Exception: Prelude.undefined
> 
> Prelude> readFile undefined >>= \cs -> putStrLn "Hello"
> *** Exception: Prelude.undefined
> 
> It seems that readFile is strict in its argument. As for getLine, it has 
> no argument to be strict in.


This is the confusion between strict/lazy in the ordinary language 
semantics sense, and strictIO/ 
lazyBrokenDangerousHereBeGremlinsSemanticallyUnsoundIO

Jules