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| author | Andreas König <a.koenig@mind.de> | 2002-03-22 17:27:51 +0100 |
|---|---|---|
| committer | Jarkko Hietaniemi <jhi@iki.fi> | 2002-03-22 15:15:37 +0000 |
| commit | 4398853c9960f1d741fa0caa3468657b500c36b0 (patch) | |
| tree | f8df9e2c3bf370be7a5a0a0db53db371ad82f63c /pod/perlmodstyle.pod | |
| parent | 31ee0cb7dc5352bfe8a41a2a493a0a48e08aa12e (diff) | |
| download | perl-4398853c9960f1d741fa0caa3468657b500c36b0.tar.gz | |
Re: Argument "1.23_45" isn't numeric in subroutine entry
Message-ID: <m3n0x0vczs.fsf@anima.de>
p4raw-id: //depot/perl@15420
Diffstat (limited to 'pod/perlmodstyle.pod')
| -rw-r--r-- | pod/perlmodstyle.pod | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/pod/perlmodstyle.pod b/pod/perlmodstyle.pod index c039da7ee3..558edcf26a 100644 --- a/pod/perlmodstyle.pod +++ b/pod/perlmodstyle.pod @@ -588,9 +588,20 @@ using perl -MExtUtils::MakeMaker -le 'print MM->parse_version(shift)' 'Foo.pm' -If you want to release a 'beta' or 'alpha' version of a module but don't -want CPAN.pm to list it as most recent use an '_' after the regular -version number followed by at least 2 digits, eg. 1.20_01 +If you want to release a 'beta' or 'alpha' version of a module but +don't want CPAN.pm to list it as most recent use an '_' after the +regular version number followed by at least 2 digits, eg. 1.20_01. If +you do this, the following idiom is recommended: + + $VERSION = "1.12_01"; + $XS_VERSION = $VERSION; # only needed if you have XS code + $VERSION = eval $VERSION; + +With that trick MakeMaker will only read the first line and thus read +the underscore, while the perl interpreter will evaluate the $VERSION +and convert the string into a number. Later operations that treat +$VERSION as a number will then be able to do so without provoking a +warning about $VERSION not being a number. Never release anything (even a one-word documentation patch) without incrementing the number. Even a one-word documentation patch should |