Re: using modules with 'no warnings' in perl 5.005

Creating a mock warnings.pm and putting it on CPAN, was actually discussed at the p5p BOF at YAPC::Europe. Unfortunately (and this is my opinion) it was deciced to not do this (yet) because of the uncertainty of all the ramifications, particularly involving version numbers (you don't want CPAN installing perl 5.8.0 because some module author added warnings.pm as a prerequisite, for instance).

However, you can mock it like this:

BEGIN {
    unless (eval "require warnings;") {
        eval <<EOD;
sub warnings::import {};
sub warnings::unimport {};
EOD
        $INC{'warnings.pm'} = 'I do not really exist';
    }
} #BEGIN
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Liz

Comment on Re: using modules with 'no warnings' in perl 5.005 Download Code

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Re: Re: using modules with 'no warnings' in perl 5.005
by PodMaster (Abbot) on Jul 29, 2003 at 08:20 UTC


BEGIN {
    eval {
        require warnings;
        1
    } or do {
        no strict 'refs';
        *warnings::import = *warnings::unimport = sub{};
        $INC{'warnings.pm'}='';
    };
}
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MJD says "you can't just make shit up and expect the computer to know what you mean, retardo!"
I run a Win32 PPM repository for perl 5.6.x and 5.8.x -- I take requests (README).
** The third rule of perl club is a statement of fact: pod is sexy.

[reply]
[d/l]

Re: Re: Re: using modules with 'no warnings' in perl 5.005

by liz (Monsignor) on Jul 29, 2003 at 08:28 UTC

One question though: the 1 in line 4 of your code seems superfluous to me. A successful 'require warnings' should return a true value anyway, no?

[reply]

Re: Re: Re: Re: using modules with 'no warnings' in perl 5.005

by PodMaster (Abbot) on Jul 29, 2003 at 08:35 UTC

[reply]


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