A three part think
simon at thegestalt.org
Fri Oct 12 17:58:29 BST 2007
Part the first: I know that it's impossible to accurately gauge the
absolute number of downloads for a given CPAN module but we can probably
guess the relative popularity if we get the download figures from, say,
search.cpan.org and cpan.org.
Accuracy would be improved if we could get the logs for several of the
Part the second: What percentage of modules on CPAN use XS?
Additionally - Is there any way to programmatically work out how
complicated that XS is - maybe by getting total lines of code, removing
obvious boilerplate, sub declarations and argument marshalling and then
looking at the remainder? Would it be possible (or, more accurately,
easy) to work out how much is calls out to external libraries rather
than hairy XS code?
Would this even be useful?
Part the third: Given a list of features in Perl - AUTOLOAD, Formats,
EXPORTER, pseudohashes, globs, typeglobs, BEGIN blocks, string eval,
etc - how easy would it be to work out what percentage of modules on
CPAN use those features?
Presumably something like PPI and MAD could help with the last two.
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