in reply to Re^4: Bad code from the trenches
in thread Bad code from the trenches

yes, it's called eval STRING :-)

"What should it profit a man, if he should win a flame war, yet lose his cool?"

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Re^6: Bad code from the trenches
by dragonchild (Archbishop) on Mar 14, 2005 at 14:16 UTC
    I meant "accidentally". eval STRING is rarely done by accident. :-)

    Being right, does not endow the right to be rude; politeness costs nothing.
    Being unknowing, is not the same as being stupid.
    Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
    Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.

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      There is no other way to force it, except the usual things that imply eval, like writing the string to a file and then require()ing it, using the string in the replacement part of a s///e expression, etc.

      Note that the (?{ code }) constructs in regexes are also safe from interpolation in /$regex/ except when you explicitly use re 'eval'

      "What should it profit a man, if he should win a flame war, yet lose his cool?"
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        Note that the (?{ code }) constructs in regexes are also safe from interpolation in /$regex/ except when you explicitly use re 'eval'
        But that wasn't originally the case when that feature was first to be released. I argued with Ilya for a few rounds on P5P, then decided he wasn't listening. He kept saying "but they should untaint their regex" like that was even possible by mortals.

        So I simply took the position that I would personally and immediately file a CERT bug against Perl 5.00X (whatever it was) the moment it came out. Oddly enough, he "invented" "use re 'eval'" about a day after that. {grin}

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

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