> I had wondered whether eval might also cater for version strings that contain multiple decimal points (v-strings),

The last part of dagolden's summary recommends to avoid dotted-integer versions

Given these criteria, my recommendation is to use decimal version numbers, put them in quotes, and add a string eval:

our $VERSION = "0.001"; $VERSION = eval $VERSION;

This is safe and effective and always works. By putting any $VERSION in quotes, even if it isn’t an alpha, you don’t have to remember to add them if you ever change to an alpha version. (And numbers with trailing zeroes are nicely formatted when parsed for distribution versions.)

If you really want to have a dotted-integer module version, then I strongly recommend that you limit your module to Perl 5.10 (or require version.pm and at least Perl 5.8.1) and that you never use an alpha version number. Always quote your dotted integer version when you define it and always use a leading-v to guide your users towards proper usage.

It’s unfortunate that version numbers are so complicated in Perl, but if you follow the recommendations in this article, your version numbers will be as boring as possible. And if you’ve read this all the way to the end, I hope I’ve convinced you that ‘boring’ version numbers are exactly what you want.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^5: Why eval $version? by LanX
in thread Why eval $version? by Aldebaran

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