[Haskell-beginners] Profiling haskell code

[Sayali Kulkarni]

Hey thanks Brent. This helped.

I have one more question now.

Consider I have two functions 
1. gives me a range of numbers in an array.
2. has to get an array input for further process.

Then how can I get the array generated by the first function tobe the
input of the second function?

Regards,
Sayali

-----Original Message-----
From: Brent Yorgey [mailto:byorgey at seas.upenn.edu] 
Sent: Tuesday, November 18, 2008 5:47 PM
To: Sayali Kulkarni
Subject: Re: [Haskell-beginners] Profiling haskell code

> I have just given it any random input array to be sorted.
> The commands that I had sent earlier were tried on Cygwin...
> (
> > > $ ghc --make Project.hs -prof -auto-all
> > >  
> > >  
> > > $ Project +RTS -p
> > >  ) 

This ought to work fine.  Just a note, to do any reasonable profiling
you will need to give it a *much* larger list to sort.  Otherwise it
will
execute so quickly that the timing data you get will be meaningless.

> 
> Also can you tell me any other method for profiling the code that you
> know? 

If you just want to see how long it takes to evaluate certain
expressions, you can type ':set +s' in ghci; from then on after every
expression you type it will tell you how long it took to evaluate and
how much memory was used.

-Brent