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Full Discussion: Switching over to C++
Top Forums Programming Switching over to C++ Post 302795903 by alister on Thursday 18th of April 2013 02:54:04 PM
Old 04-18-2013
Why were you asked to rewrite in C++? Was any justification given? Or is it just a blind assumption that it will be better?

I am going to assume that the perl script is a complicated beast.

I would seriously advise against a rewrite, except as a last resort. Complex code that works well is usually the result of a lot of testing and debugging. I would not cast it aside lightly.

I concur with Corona688 and elixir_sinari. Profile your current script and see where it spends most of its time. Then, have a look at those subroutines and see if they can be optimized in perl. Even if that's insufficient, a complete rewrite is still not your only alternative. The critical perl sections can be re-implemented in C and loaded by the perl interpreter like any other module: perlxs.

One thing is certain: advice on whether to rewrite code from people who do not know what that code does isn't worth much. Perhaps not even the proverbial 2 cents.

Regards,
Alister
 

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String::RewritePrefix(3)				User Contributed Perl Documentation				  String::RewritePrefix(3)

NAME
String::RewritePrefix - rewrite strings based on a set of known prefixes VERSION
version 0.007 SYNOPSIS
use String::RewritePrefix; my @to_load = String::RewritePrefix->rewrite( { '' => 'MyApp::', '+' => '' }, qw(Plugin Mixin Addon +Corporate::Thinger), ); # now you have: qw(MyApp::Plugin MyApp::Mixin MyApp::Addon Corporate::Thinger) You can also import a rewrite routine: use String::RewritePrefix rewrite => { -as => 'rewrite_dt_prefix', prefixes => { '' => 'MyApp::', '+' => '' }, }; my @to_load = rewrite_dt_prefix( qw(Plugin Mixin Addon +Corporate::Thinger)); # now you have: qw(MyApp::Plugin MyApp::Mixin MyApp::Addon Corporate::Thinger) METHODS
rewrite String::RewritePrefix->rewrite(\%prefix, @strings); This rewrites all the given strings using the rules in %prefix. Its keys are known prefixes for which its values will be substituted. This is performed in longest-first order, and only one prefix will be rewritten. If the prefix value is a coderef, it will be executed with the remaining string as its only argument. The return value will be used as the prefix. AUTHOR
Ricardo Signes <rjbs@cpan.org> COPYRIGHT AND LICENSE
This software is copyright (c) 2013 by Ricardo Signes. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.18.2 2013-10-15 String::RewritePrefix(3)
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