Thanks. I got confused because the StackOverflow link on http://www.haskell.org/haskellwiki/HaWiki_migration
is dead. -----Original Message----- From: Derek Elkins [mailto:[EMAIL PROTECTED] Sent: Saturday, August 18, 2007 8:54 PM To: Peter Verswyvelen Cc: [email protected] Subject: Re: [Haskell-cafe] Newbie question: Where is StackOverflow on the Wiki? On Sat, 2007-08-18 at 20:35 +0200, Peter Verswyvelen wrote: > When reading an article about tail recursion > (http://themechanicalbride.blogspot.com/2007/04/haskell-for-c-3-programmers. > html) I came across the follow statements: > > "If you can write a non-recursive function that uses the colon syntax it is > probably better than a tail recursive one that doesn't. This is because > Haskell's lazy evaluation enabled you to use the non-tail recursive version > on an infinite stream without getting a stack overflow. " > > and > > ""Unfortunately", laziness "gets in the way". While transforming > non-tail-recursive code to a tail-recursive form is important and useful for > functional programming in general, dealing with laziness requires a little > more care, and often "non-tail-recursive" versions are preferrable. flatten > is an example of this, the first version is better in many ways. While I > don't believe it happens in this case, oftentimes naively writing code > "tail-recursively" in Haskell will actually -make- it overflow the stack. > Another (actual) benefit of the first version of flatten is that it will > work on infinite lists. http://www.haskell.org/hawiki/StackOverflow gives a > simple example and some explanation." That page was migrated here: http://www.haskell.org/haskellwiki/Stack_overflow _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
