[Haskell-cafe] About do notation.

[Brandon S. Allbery KF8NH]

On 2008 Oct 14, at 23:55, Magicloud wrote:
>   As some articles say, do notation is expand to (>>) and (>>=) when  
> being compiled.
>   So I want to know the details. Like:
> main = do
> a <- getArgs
> b <- getLine
> myFunc1 (head a) b
> myFunc2 b (head a)
>
>   I cannot figure out what is the (>>) and (>>=) way of this.


If you are on FreeNode IRC, you can ask lambdabot to @undo such  
expressions (would need to use braces and semicolons instead of layout  
though).

main = getArgs >>=
        \a -> getLine >>=
        \b -> myFunc1 (head a) b >>
        myFunc2 b (head a)

-- 
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH