You probably already know this, or perhaps don't need to hear it.
Recursion makes for biig overheads, and without exception anything using recursion can be done with loops.

Part of the reason that people use recursion is to map the solution precisely to the problem set,
this is often due to not understanding the problem, although I'm not implying this is the case here.
i.e Using your simple example. 

#!/usr/local/bin/perl -w
use strict;

sub main() {
    doSomething(1,2,0);
    print "Done\n";
}

sub doSomething{
    my ($data1, $data2, $count)=@_;
    for($count..3){
                $data1++,$data2++,$count++;
                print "\$data1: $data1, \$data2: $data2, \$count: $cou
+nt\n";
        }
}

main()

[download]

Now this is probably redundant information, or at worst seems like bigotry, but
believe me, I've used recursion in LISP for years, but whilst I enjoyed it, it's not effecient.

If you're just doing this as an exercise in recursion, that's fine, otherwise I'd advocate developing
a loop alternative and benchmarking the two, the dividends should speak for themselves.

--

Brother Frankus.

¤

In reply to Re: problem prototyping a self-recursing function by frankus
in thread problem prototyping a self-recursing function by apprentice

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