Re: [Module::Build] version.pm and version number comparison problem

[Chris D. <ch...@cl...>]

On Feb 2, 2006, at 3:10 PM, Julian Mehnle wrote:

> All that doesn't help much as long as the "UNIVERSAL" POD is part  
> of the
> official Perl distribution, while the "UNIVERSAL::isa" POD is not.   
> This
> makes the "UNIVERSAL" POD look authoritative, not the other POD.
>
> Besides, the "UNIVERSAL::isa" POD doesn't explain the issue very  
> well, see
> above.  And why is it titled "Hack around people calling  
> UNIVERSAL::can()
> as a function" if it is supposed to actually _improve_ code, which  
> is not
> normally the case with _hacks_?

Look again at Perl 5.8.8 or 5.9.3.  The UNIVERSAL.pm POD was updated  
(by chromatic, I think, a month or two ago) to reflect the current  
accepted best practice.  To quote:

        "UNIVERSAL" provides the following methods:

        "$obj->isa( TYPE )"
        "CLASS->isa( TYPE )"
        "eval { VAL->isa( TYPE ) }"

	[... snip ...]

        You may request the import of all three functions ("isa",  
"can", and
        "VERSION"), however it is usually harmful to do so.  Please  
don't do
        this in new code.


Chris
-- 
Chris Dolan, Software Developer, Clotho Advanced Media Inc.
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