Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation

Re: Help with split() function

by wrinkles (Pilgrim)
on Mar 19, 2008 at 10:18 UTC ( #674970=note: print w/replies, xml ) Need Help??

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);

Replies are listed 'Best First'.
Re^2: Help with split() function
by driver8 (Scribe) on Mar 19, 2008 at 18:03 UTC

    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".


Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://674970]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others imbibing at the Monastery: (3)
As of 2017-06-29 06:10 GMT
Find Nodes?
    Voting Booth?
    How many monitors do you use while coding?

    Results (653 votes). Check out past polls.