Re: [MacPerl] pure Perl:-Bulk matching with REGEX

[Arved Sandstrom <Arved_37@chebucto.ns.ca>]

On Mon, 17 May 1999 robinmcf@altern.org wrote:

> I'm working on a script that reads in a text file and a dictionary file and
> uses the dictionary file to process the text file in terms of word
> frequency and /or  manipulation through regex matching-
> armed with Learning Perl (the blue Llama), Programming Perl (the blue
> camel) and  Advanced Perl Programming (the black panther standing on a blue
> box) and the PODs I _cannot_ find anything to help me achieve this end
> (that I can understand)
> 
> This snippet from perlfaq6:
>     while (<>) {
>         while ( /(\b[^\W_\d][\w'-]+\b)/g ) {   # misses "`sheep'"
>             $seen{$1}++;
>         }
>     }
>     while ( ($word, $count) = each %seen ) {
>         print "$count $word\n";
>     }
> 
>

The <> is the shorthand mechanism for reading from @ARGV. You don't supply
anything in @ARGV. So either populate @ARGV (push the dictionary filename
into it), or explicitly open that file and instead of <> use <DICT>.
 
> Plus the fact the same perlfaq6 states this kind of processing is highly
> inefficient and suggests using something like the following:

[ Code snipped ]
 
> Of which I can only say I seem to have found the chasm across which my
> logic will not leap - any pointers to web pages, documentation , or just
> plain explanations would be gratefully received

Well, the perlfaq suggestion is all well and good if you're running on
Unix. The refs to 'xterm' and '/etc/termcap' basically indicate that we
won't be using this alternative with MacPerl. :-)



===== Want to unsubscribe from this list?
===== Send mail with body "unsubscribe" to macperl-request@macperl.org