"be consistent" | |
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Re^3: comparing two arrayby citromatik (Curate) |
on Jun 17, 2009 at 12:54 UTC ( [id://772385]=note: print w/replies, xml ) | Need Help?? |
In this case...
Are all equivalent (give the same result). exists returns true if the specified element in the hash has ever been initialized, even if its current value is undefined. In this case, all elements has been initialized to 1. If you undefine one element of the hash, for example undef $h{$elem}, then $h{$elem} still exists, but its value is undef citromatik
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