The most common float <---> tuple translation approach (which is the one Perl itself uses) involves the idea of zero-padded triplets.
D:\cpan\trunk\Perl-Dist-Strawberry>perl -e "print $]" 5.010000 As far as I know, when extended to CPAN versions, the convention has been to pad out decimals to the nearest triplet, even if you are collapsing out the _. So 1.234_56 becomes 1.234560 in float form, or 1.234.560 in tuple form. Just as the common 1.23 is 1.230 in float form, or 1.230.0 in tuple form. Adam K 2009/4/23 Austin Schutz <t...@off.org>: > > It seems like most of the time the XX part is essentially two digits, > where the leading 0 is implied, i.e.: > > 1.1.1 -> 1.01.01 > > > This could be directly compared with: > > 1.0101 > > and would solve the case where > > 1.9.1 > 1.10.1 > > Looks like the only case where that wouldn't work would be where the > format looks like > > X.XXX_XX > > but thankfully nobody would ever do anything that silly (++$sarcasm) > > I don't remember the last time I saw a version w/ .XXX. in it other > than perl itself. > > Austin > > On Wed, 22 Apr 2009 19:14:41 -0400 > David Golden <xda...@gmail.com> wrote: > >> I scanned the version numbers as parsed out of distribution filenames >> on my minicpan and analyzed the generic format. Since we're talking >> about distribution version numbers and most of the time those will be >> generated by M::B, EU::MM or M::I and applied to META.yml and the >> filename, it's reasonably representative of the problem space. >> >> While there are probably some edge cases that I didn't parse >> correctly, it's close enough to see what's out there. >> >> In the following table "X" is a digit (best viewed monospaced). The >> full analysis is here: >> http://echo.dagolden.com/~xdg/format-analysis.txt >> >> OVERALL TOP FORMATS >> X.XX 12986 >> X.X 1624 >> X.XXX 1048 >> X.X.X 754 >> X.XXXX 359 >> X.XXXXX 165 # Repository sequence numbers? >> vX.X.X 138 >> X.XX_XX 89 >> X.X.XX 71 >> X 64 >> X.XX.X 62 >> X.XXXXXX 58 >> X.XX.XX 37 >> X.XXa 34 >> X.X.X.X 19 >> XXXXXXXXXX 19 # YYYYMMDDNN? >> X_XX 18 >> XXXXXXXX 18 # YYYYMMDD? >> X.XXb 17 >> X.XX_X 16 >> >> -- David > >
