Re: hash to count words

[NetWallah]

in reply to hash to count words

Please use "code" tags correctly, as described in Writeup Formatting Tips.

Your regex "$word =~ s/^\w\x\//g;" is invalid.

you probably want:

  $word=~s/[^\w]//g; # Eliminate non-word chars

Your re-initilazation of "%hash=()" within the loop makes the hash useless.

Declare it outside the loop, and add data to it using

  $hash{$word}++;  # Get a count of the word

Later , you can get a list of words found by accessing:

   keys (%hash)

Please try to follow davido's excellent advice in response to your previous question on the same subject.

[underoathed]

So here is what i have for code so far for the hash.

#!/usr/bin/perl -w
open (IN, $file) or die "Cannot open file '$file' : $!\n;
$line = <IN>;
@array = split ( ' ', $line);
foreach $word (@array){
$word =~ s/^\w\w//g;
$word = lc ($word);
print "$word\n";}
$hash {$the}++;
$hash {$linux}++;
$hash {$hello}++;

What am I doing wrong?

[NetWallah]

Ok - I'll take a stab at answering your question "What am I doing wrong?" :
• Not using 'strict'. (add "use strict;" to the top of your code)
• Not using canonical "open" with local filehandle. (Try : open(my $f, "<", $file) or die "Cannot open '$file':$!";)
• Not declaring variables (use my @array; (follows from "use strict"))
• Not formatting/aligning your code for visibility
• Not following advice (davido's code works for what you need)
• Not reading how hashes work
• Not closing the file handle you opened.
• Not posing your question(s) clearly
• Not showing what you expect as a result of your code
• Not showing sample data
The answer to the question in your previous post on the meaning of "/g" can be found by running "perldoc perlre".

[AnomalousMonk]

Please allow an addition to the list: Not bothering to fix a previous post known to be problematic.