From jklein at triton.net  Tue Apr  2 13:40:48 2002
From: jklein at triton.net (Jeff Klein)
Date: Wed Aug  4 00:01:20 2004
Subject: Hash Buckets trivia
Message-ID: <000e01c1da7e$4a4bca60$eea741d8@oemcomputer>

A follow-up to the trivia question at the last meeting -- a hash in a scalar
context returns the number of hash buckets used and the number allocated.

===
for $i (1..1000) {
  $h{$i} = 1;
}
print scalar(%h), "\n";
print scalar(keys %h), "\n";

===
541/1024
1000
===

Note that neither of these is the number of entries in the hash, exactly why
is a matter of Perl's internal implementation.

-Jeff