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All the Perl that's Practical to Extract and Report

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  • I've never understood the appeal of map() in void context, at least since the for() statement modifier came out.

    Why is using map() and ignoring the side effects any better than using grep() for the same purpose? Just because grep() is one character longer? It seems obfuscatory, but I must be missing something.

    I might write the line as
    $msg->got_hit("RCVD_IN_$_") for grep { $blacklists->{$_} } keys %$blacklists;
    which seems to communicate the idea more clearly.