On 13 Nov 2005 at 19:19, Dylan Stamat wrote:
> No, not the routine that deals with Arrays !
>
> I see code like the following, everywhere:
> my $coolvariable = shift;
>
> Why is a new scalar being assigned to "shift" ?
> New to Perl... sorry for the lame question, but couldn't find an answer
> anywhere.
shift does deal with arrays. So $coolvariable is has the first
element of whatever array you passed to the function:
sub mysub {
my $first_element = shift;
my $second_element = shift;
print "One=$first_element, Two=$second_element\n";
}
You see shift a lot at the start of scripts too. It's how you take in
command-line arguments (the array @ARGV) . So
#!/usr/bin/perl -w
# name.pl
#
use strict;
my $name = shift;
print "Your name is $name\n";
> ./name.pl joe
prints joe.
HTH.
Dp.
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