hi monks, a while ago I tried to code something similar to the following one: 

use warnings;
use strict;

my @d;
for (my $i = 0; $i<3; $i++) {
    push @d, sub { print "$i\n" };
}

&{$d[0]}();
&{$d[1]}();
&{$d[2]}();

[download]

what I expected as the result of this script was

1
2
3

however, what I got was

3
3
3

so, I concluded that perl uses a "lazy evaluation" strategy, which means that it does not assign the value of a variable until the value is really needed.

for example, in my sample code the variable $i has the value 3 at time the three functions are called.

however, knowing the reason cannot solve my problem. is there a way to force perl to assign the value of the variable at the time the function is defined?

---------------------------------
life is ... $mutation=sub{@_=split'';$gene=int(rand($#_+$=/$=));$_[$gene]=$=/$=-$_[$gene];$_=join'',@_};

In reply to evaluation strategy of perl by mayaTheCat

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