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| laziness, impatience, and hubris | |
| PerlMonks |
Re: undef as a key in a hash.by Eimi Metamorphoumai (Deacon) |
| on Sep 25, 2007 at 18:40 UTC ( [id://641016]=note: print w/replies, xml ) | Need Help?? |
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Hash keys are always strings, so if you try to use undef it will be coerced to the empty string, with a warning ("Use of uninitialized value in hash element") if warnings are enabled. So it shouldn't actually be possible for that code to be called.
In Section
Seekers of Perl Wisdom
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