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Now, tell me... is that not a *lot* easier to comprehend... and more importantly, if you were a maintenance coder... would you not prefer to have to understand these 2 lines of code, rather than the chunk of java?

If I were a Perl maintenance coder, I might prefer something slightly more verbose (but only slightly).

But if I were using this example to wave at Java coders to convince them that Perl will save them grief, I would make it even more verbose, lest it reenforce a notion that Perl is overly cryptic. Past a point, "Look how small we can do this with Perl!" becomes a negative. Instead, present Java programmers with something more familiar.

Something like

#!/usr/bin/perl -w use strict; my %frequency = (); # maps token -> count # for every line of every input file while ( <> ) { # for each token on the line foreach my $token ( split /\W/ ) { # increment the count for the token $frequency{$token}++; } } # print each token and its count foreach my $token ( sort keys %frequency ) { print "$token: $frequency{$token}\n"; }
A bit more verbose than what would automatically fly off the fingertips of a seasoned Perl hacker, but even with comments, it is less than a third the size of the Java example. AND it only uses control structures that a Java programmer should recognize. The only thing they might object to is the hidden use of $_.

(I don't know how TreeMap behaves, so the sort might need to be changed to sort on value.)


In reply to Re: Efficiency in maintenance coding... by dws
in thread Efficiency in maintenance coding... by eduardo

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