Agreed, and thanks for pointing that out!
--- Michael Lamertz <[EMAIL PROTECTED]> wrote:
> Paul ([EMAIL PROTECTED]) wrote:
> >
> > #!/usr/local/bin/perl -w
> >
> > use strict
> > open (FILE,$0) or die $!; # this reads itself
> > my($data,%count);
> > { local $/ = undef; # erases the record seperator for this
> block
> > $data = <FILE>; # slurps in the whole file to $data
> > }
> > close(FILE); # good habit
> > map { $count{$_}++ } $data =~ /(\w+)/sog; # watch the context!
> > print map { "$count{$_} occurances of '$_'\n" } sort keys %count;
> >
> > Perl is a wonderfully concise language.
> > The above is strictly given as an example of a few performance
> tricks
> > that are worth researching. =o)
>
> I agree printing the map output, but I disagree using map to
> calculate
> the sums. map always generates a new array that immediately gets
> dumped
> since it's not assigned. A foreach would be nicer to system
> resources
> and better to read. To make it short, use it postfix:
>
> $count{$_}++ foreach ($data=~ /.../);
>
> Check 'perldoc perlfaq6' for reference.
>
> --
> If we fail, we will lose the war.
>
> Michael Lamertz | [EMAIL PROTECTED] /
> [EMAIL PROTECTED]
> Nordstr. 49 | http://www.lamertz.net
> 50733 Cologne | Work: +49 221 3091-121
> Germany | Priv: +49 221 445420 / +49 171 6900 310
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