Re: Re: Figuring out which version of a loaded module

I want to find out if MyModule is at least version N. I don't want to parse the version strings. I'll let VERSION do that for me. :-)

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Comment on Re: Re: Figuring out which version of a loaded module

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Re: Re: Re: Figuring out which version of a loaded module by xmath (Hermit) on Feb 26, 2003 at 16:11 UTC
if you supply a number to UNIVERSAL::VERSION like you do, it simply does a numeric compare. So your exact script could be reduced to: `$self->{PDF_VERSION} = int pdflib_pl->VERSION or die "Cannot find pdflib_pl version\n"; $self->{PDF_VERSION} = 4 if $self->{PDF_VERSION} > 4;` [download] •Update: OK, correction, if $pdflib_pl::VERSION is a v-string it messes up, but I have never seen a module that uses that (none of the core modules are, nor are the tons of other modules installed on my computer). In fact, perldoc perlmodlib and perlmodstyle actually says explicitly $VERSION should be a floating-point number.	[reply] [d/l]

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Re: Re: Re: Figuring out which version of a loaded module
by xmath (Hermit) on Feb 26, 2003 at 16:11 UTC

So your exact script could be reduced to:

$self->{PDF_VERSION} = int pdflib_pl->VERSION
                or die "Cannot find pdflib_pl version\n";
$self->{PDF_VERSION} = 4  if $self->{PDF_VERSION} > 4;
[download]

•Update: OK, correction, if $pdflib_pl::VERSION is a v-string it messes up, but I have never seen a module that uses that (none of the core modules are, nor are the tons of other modules installed on my computer).

In fact, perldoc perlmodlib and perlmodstyle actually says explicitly $VERSION should be a floating-point number.

[reply]
[d/l]