Cool.

I had previously convinced myself that because BEGIN requires a block, I couldn't fake out 'use warnings' for people who don't have it but then I realized this works fine: 

BEGIN {
    if(  eval { require warnings }  ) {
        warnings->import();
    } else {
        $^W= 1;
    }
}

[download]
because the pragmas already expect to be inside of a (invisible) block and so apply themselves to one block further out.

I like this method because it allows the user to install a back-ported warnings.pm or bytes.pm or whatever and use it if they want to and I don't have to trust my knowledge of when the module was added. (:

Anyway, it is another way to do it.

                - tye

In reply to Re^2: use bytes without breaking perl 5.005 or 5.004? (also) by tye
in thread use bytes without breaking perl 5.005 or 5.004? by joshclark

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