Re: Expecting a 100 solutions, getting just 1

It's hard to understand what you are trying to do. What is a "trial solution"? Is there some randomness involved?

If you want to store multiple somethings, you best use an array:

my @interesting_values;
for (1...1000) {
   my $r = rand;
   if ($r > 0.5) {
       push @interesting_values, $r;
   }
}
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See also: perldata, perlintro.

This part of your code:

      for ($i=0; $i<$i_max; $i++) {  
 
        if ($z < $z_best) {
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seems to be entirely useless, because you never set $z to anything, and there's no reason to iterate over that if-statement, since nothing in there is random or depends on $i.

Also please Use strict and warnings and declare your variables with my.

Perl 6 - the future is here, just unevenly distributed

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Re^2: Expecting a 100 solutions, getting just 1 by doozy (Initiate) on Apr 17, 2012 at 08:58 UTC
There is randomness involved because 1 value of $A is a guess. The objective is to choose a pair of guesses A and B which minimize the error term. Also, will declaring the variables with my get around the scalar property of $? Thanks for the tip about the warnings.	[reply]
Re^3: Expecting a 100 solutions, getting just 1 by moritz (Cardinal) on Apr 17, 2012 at 09:10 UTC
There is randomness involved Where? I don't see any calls to rand, or other sources of randomness in your code because 1 value of $A is a guess. A guess for what? The objective is to choose a pair of guesses A and B which minimize the error term. What's the error term? How is it calculated? Also, will declaring the variables with my get around the scalar property of $? No. You're not supposed to work around it, you are supposed to use variables starting with `@` if you want multiple values in one variable. Perl 6 - the future is here, just unevenly distributed	[reply] [d/l]
Re^4: Expecting a 100 solutions, getting just 1 by doozy (Initiate) on Apr 17, 2012 at 09:58 UTC
`No. You're not supposed to work around it, you are supposed to use variables starting with @ if you want multiple values in one variable.` Thanks for the clarification. I misused the term random in this case. The value of $A is a guess for a variable in a set of equations (which I didn't include here), uniformly distributed between 0 and A_max. The error term is "included" in the posted script as part of a comment.	[reply] [d/l]