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    <p>My position is <em>keep it simple</em>. <strong>Declare your version as a string containing a floating point number.</strong> Leave the multiple-decimal stuff for Perl's version numbers and Perl 6.</p> <p>If your module requires Perl 5.6.0 or later:</p> <pre><code>our $VERSION = '1.02'; </code></pre> <p>Or, if you need to remain compatible with Perl 5.005 or older:</p> <pre><code>use vars '$VERSION'; $VERSION = '1.02'; </code></pre> <p>Some additional points:</p> <ol> <li><p><strong>Always use the same number of digits after the decimal point.</strong> Some (non-Perl) packaging tools think version 1.11 comes after 1.9 but before 1.90. If you need to change the number of digits you use, increment the major version number at the same time.</p></li> <li><p><strong>Always declare the version as a string.</strong> This keeps trailing zeros from disappearing. (See point 1.)</p></li> <li><p>If you want to make an unstable (e.g. alpha or beta) release, append the string <code>-TRIAL</code> to the <em>distribution's</em> version number (e.g. upload <code>Foo-Bar-1.90-TRIAL.tar.gz</code> containing Foo::Bar 1.90). This tells CPAN to list it as a development release, just as if it contained an underscore. <a href="http://search.cpan.org/perldoc?Dist::Zilla" rel="noreferrer">Dist::Zilla</a> makes it easy to make trial releases.</p></li> </ol> <p>A string containing a floating point number will work with all versions of Perl, all versions of MakeMaker &amp; Module::Build, and all Linux distributions I'm aware of.</p>
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    1. POHow do I declare the version number for a Perl module?
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    1. CONote: If you're currently using multiple-decimal versions, **do not** switch to a floating point version unless you increment the major version number at the same time (e.g., it's safe to go from 4.3.2 to '5.00', but not to '4.40').
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    2. COCorrection: pretty much everything in the world besides Perl thinks that 1.11 comes after 1.9 :)
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