In the above case yes but as the number of keys is increased the buckets will get reused and the result won't be correct: 
    $ perl -le '%h = (1 .. 10);  print scalar %h'
    5/8

    $ perl -le '%h = (1 .. 12);  print scalar %h'
    5/8

    $ perl -le '%h = (1 .. 100); print scalar %h'
    33/64

[download]
:-)

Actually, I searched for a genuine use for this feature for a long time and I almost found one: Power Twool.

--
John.

In reply to Re^3: Perl oddities by jmcnamara
in thread Perl oddities by brian_d_foy

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