extra constructor calls, inefficent loop variable scope?

[ixtahdoom]

Hi All,

Does the declaration of a variable impact performance? For exmaple:

Loop A:

while (<>) {
my $something = $_;
}

Loop B:

my $something;
while (<>) {
$something = $_;
}

Is either one better w.r.t. performance?

Thanks,
itd

 

[Gunnar Hjalmarsson]

Does the declaration of a variable impact performance? For exmaple:

Loop A:

while (<>) {
my $something = $_;
}

Loop B:

my $something;
while (<>) {
$something = $_;
}

Is either one better w.r.t. performance?

I have no idea. If you want to know, make use of the Benchmark module.