Comments on: Perl version number puzzles http://www.dagolden.com/index.php/204/perl-version-number-puzzles/ Whatever comes to mind Thu, 09 Sep 2010 12:01:44 +0000 hourly 1 By: david http://www.dagolden.com/index.php/204/perl-version-number-puzzles/comment-page-1/#comment-236 david Sun, 19 Jul 2009 14:40:18 +0000 http://www.dagolden.com/?p=204#comment-236 Since it's been over a month with no one guessing, and since rafl on #corehackers asked to see the answers, here they are: <strong>Puzzle #1: our $VERSION = v0.1.1;</strong> Note that for Perl 5.8.9, you need to hope that any users don't try to use() your module with a numeric conversion, the way they have been taught to do for perl. I.e. "use 5.006002" instead of "use v5.6.2". <strong>Puzzle #2: use version; our $VERSION = version->new(v0.0_1)</strong> <strong>Puzzle #3: use version; our $VERSION = version->new("v0.0_1");</strong> Note the only difference between these two is whether the v0.0_1 is in quotes in the call to new(). <strong>Puzzle #4: our $VERSION = "0.001001";</strong> Sort of a trick question, but note that perl 5.10 reports "this is v0.1.1" which isn't actually what is in $VERSION. Since it's been over a month with no one guessing, and since rafl on #corehackers asked to see the answers, here they are:

Puzzle #1: our $VERSION = v0.1.1;

Note that for Perl 5.8.9, you need to hope that any users don't try to use() your module with a numeric conversion, the way they have been taught to do for perl. I.e. "use 5.006002" instead of "use v5.6.2".

Puzzle #2: use version; our $VERSION = version->new(v0.0_1)

Puzzle #3: use version; our $VERSION = version->new("v0.0_1");

Note the only difference between these two is whether the v0.0_1 is in quotes in the call to new().

Puzzle #4: our $VERSION = "0.001001";

Sort of a trick question, but note that perl 5.10 reports "this is v0.1.1" which isn't actually what is in $VERSION.

]]>