Edward Wijaya wrote:
Seems that John's regex approaches are (much) faster:
Rate HD_string HD_jkrahn2 HD_jkrahn1
HD_string 203251/s -- -18% -76%
HD_jkrahn2 247033/s 22% -- -71%
HD_jkrahn1 848840/s 318% 244% --
[snip]
sub hamming_distance_jkrahn1 { my $ret = ( $_[0] ^ $_[1] ) =~ tr/\0//; $ret }
I think you mean the NON-regexp approach is faster. :-)
John
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