It makes no sense to use it on scalars.
Hey, that's not such a bad idea. For conditional inclusion in lists, instead of something like: 
    @foo = (
        ...
        ( $include_bar ? 'bar' : () )
        ...
    );

[download]
you'd have 
    @foo = (
        ...
        grep( $include_bar, 'bar' )
        ...
    );

[download]
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In reply to Re^2: (Mis)Understanding <c>grep...eq $_<c> by ysth
in thread (Mis)Understanding grep...eq $_ by ww

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