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

[Ken W. <ke...@ma...>]

On Feb 2, 2006, at 10:22 AM, Chris Dolan wrote:

> On Feb 2, 2006, at 8:06 AM, John Peacock wrote:
>
>>
>>    # Unbless it if it's a version.pm object
>> -  $result = "$result" if UNIVERSAL::isa( $result, 'version' );
>> +  $result = $result->numify if UNIVERSAL::isa( $result, 'version' );
>
> While we're at it, we should change the
>   UNIVERSAL::isa( $result, 'version' )
> to
>   eval { $result->isa('version') }

That's probably better, but it has its own problems.  What if someone's 
overloaded isa() object is trying to throw an exception?  This will 
throw it away.

Personally I think inheritance is a language feature, and we ought to 
have a language feature (like blessed() or tied()), not an inheritable 
method, to inspect it.  But other people are more passionate about this 
than me, so I won't argue.

  -Ken