Have you profiled it? I wouldn't worry about recursion until I've seen the problem. I believe GHC defaults to infinite stack size.

Have you tried using hp2ps and/or looking at the code via threadscope?

Hello everyone

In C you can't implement main loop with recursion like

void mainLoop() {

  doSomething();

  mainLoop();

}  

because without optimisations stack will overflow.

In haskell it's common to write

mainLoop = doSomething >> mainLoop, and it doesn't leak memory because of haskell's evaluation model.

Does memory leak or argument stack overflow happen in this case?

mainLoop = doSomething >> mainLoop >> exit ExitSuccess

What about this case?

mainLoopModeA = do

  doSomething

  when condition mainLoopModeB

  mainLoopModeA

mainLoopModeB = do

  doSomethingElse

  when anotherCondition mainLoopModeA

  mainLoopModeB

or this case?

mainLoopModeA = do

  doSomething

  if condition

    then mainLoopModeB

    else mainLoopModeA

mainLoopModeB = do

  doSomethingElse

  if anotherCondition 

    then mainLoopModeA

    else mainLoopModeB

--

Nikita Fufaev

_______________________________________________
Haskell-Cafe mailing list
To (un)subscribe, modify options or view archives go to:
http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
Only members subscribed via the mailman list are allowed to post.