{I said this in the CB... maybe you didn't see it.}

If I want to create a wrapper class that delegates rather than inherits, my class @ISA-not {grin} your precious IO::File, even though I'm using one internally, and delegating everything.

So, please, don't check isa. It's not the right thing to do for maximum re-usability.

I'd say that I could probably override UNIVERSAL::isa to report that "yes, I am in fact a IO::File". However, the most common idiom these days for determining "isa" is not with a method call, because that fails on non-blessed references. {sigh}

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

In reply to •Re: Re: •Re: Re: Say no to ref $thing eq "Expected::Type" by merlyn
in thread Putting file contents into a scalar by ByteOrNybble

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