Re: Help with split() function

[wrinkles]

in reply to Help with split() function

I'm working through some of these "Seekers" questions as a learning tool. This is my first perlmonks post. :)
To print one "word" per line, stripping out punctuation at the end, try this:

#!/usr/bin/perl

use warnings;
use strict;

my $filename = shift;
open  my $TEST_FH, '<', "$filename" or die "Cannot open file $filename
+\n$!\n";
while (<$TEST_FH>) { 
    chomp;
    my @words = split;
    my @pmatch = grep {/p/i} @words;
        if (@pmatch) {
        foreach (@pmatch) {
            s/[^\w]$//;
            print "$_\n";
        }
    }
}
close ($TEST_FH);

[driver8]

Looks pretty good, but I'll make some suggestions. Instead of "[^\w]" you can use "\W". It means the same thing. Also putting "if (@pmatch)" before your "foreach" is redundant. If there is nothing in the array, it won't enter the loop. Here's my solution:

while (<DATA>) {
    for (split /\W/) { 
    print "$_\n" if /p/i;
    }
}

__DATA__
CPAN stands for comprehensive Perl Archive Network.
^ and $ are used as anchors in a regular expression.
/pattern/ is a pattern match operator.
Perl is very easy to learn.
Enter 'H' or 'h' for help.

It separates punctuation and other "\W" characters in the split statement. Then it skips any temporary arrays and just prints if the element contains a "p".