I love your answer. Below I have put my result of running your benchmark in a Fedora9 VM on a Lenovo laptop.

But what really intrigues me is how you built the test hash and keys to test with... 2 'map's in 2 lines of code. Figuring out 'genkeys' and the %hash, and @test values will take me the rest of the afternoon; thanks 

### using 5.010
[~]# time perl hash_test_benchmark.pl
        Rate assign double
assign 119/s     --    -2%
double 122/s     2%     --

real    2m30.601s
user    2m17.789s
sys     0m6.317s

### without 5.010
[~]# time perl hash_test_benchmark.pl
        Rate double assign
double 121/s     --    -0%
assign 122/s     0%     --

real    2m32.598s
user    2m19.745s
sys     0m6.498s
[~]#

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In reply to Re^3: the if statement by Wiggins
in thread the if statement by kwn

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