On Tue, 30 Mar 2010 23:05:00 -0600
Jon Forsyth <[email protected]> wrote:
> I am truly a beginner. Could someone help me understand this syntax
> out of a code example from "Learning Perl"? On line 5 I'm confused
> as to why "my $number" is between "foreach" and the ()? is "my
> $number part of the loop?
Yes, it is. $number is the iteration variable and it is linked to each
element of the array in turn. Changing $number will change the
contents of the array.
For example:
#!/usr/bin/perl
use strict;
use warnings;
my @array = ( 'a' .. 'z' );
print "before for loop: @array\n";
for my $item ( @array ){
if( $item =~ /[aeiou]/ ){ # if a vowel
$item = uc $item; # make it uppercase
}
}
print "after for loop: @array\n";
__END__
--
Just my 0.00000002 million dollars worth,
Shawn
Programming is as much about organization and communication
as it is about coding.
I like Perl; it's the only language where you can bless your
thingy.
Eliminate software piracy: use only FLOSS.
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