Why does grep require lvalues?
So you can suprise people with what this does: 
perl -e "@in = (1..5); @out = grep { $_++ } @in; print qq{@in}"

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But as far as I can tell, there is no good reason.
Oh - a good reason? Sorry, haven't got one of them. Move along please, nothing to see here.

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.sig : File not found.

In reply to Re^4: Accidentally creating hash elements with grep { defined } on a hash slice by wol
in thread Accidentally creating hash elements with grep { defined } on a hash slice by ferment

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