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Re: Hash to Scalar Assignment Oddityby bunnyman (Hermit) |
on Jan 26, 2006 at 18:12 UTC ( [id://525793]=note: print w/replies, xml ) | Need Help?? |
This isn't odd. It's supposed to do that. If you evaluate a hash in scalar context, it returns false if the hash is empty. If there are any key/value pairs, it returns true; more precisely, the value returned is a string consisting of the number of used buckets and the number of allocated buckets, separated by a slash. This is pretty much useful only to find out whether Perl's internal hashing algorithm is performing poorly on your data set. For example, you stick 10,000 things in a hash, but evaluating %HASH in scalar context reveals "1/16" , which means only one out of sixteen buckets has been touched, and presumably contains all 10,000 of your items. This isn't supposed to happen.-- man perldata
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