Best way to iterate through a Perl array

Question

Which is the best implementation(in terms of speed and memory usage) for iterating through a Perl array? Is there any better way? (@Array need not be retained).

Answer 1

In single line to print the element or array.

print $_ for (@array);

NOTE: remember that $_ is internally referring to the element of @array in loop. Any changes made in $_ will reflect in @array; ex.

my @array = qw( 1 2 3 );
for (@array) {
        $_ = $_ *2 ;
}
print "@array";

output: 2 4 6