[Haskell-cafe] writer monad help

[Brandon S. Allbery KF8NH]

On May 18, 2007, at 7:32 , iskaldur wrote:

> import Control.Monad.Writer
> foo :: Writer String Int
> foo = tell "hello"

foo = tell "hello" >> return 1 -- or whatever

You declared it to return Int, you should probably produce an Int  
somewhere....

-- 
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