Dear friends,
Hello,
After a couple of months dwelling into Perl scripting especially in manipulating strings, I found myself resorting to use "substr" function a lot.
I had a feeling that the most of the "substr" function can be replaced with regexp in any cases. For example the simple code below. I wonder how would masters redo this function with pure reqexp approach.
I don't know if I am a master but I wouldn't use a regular expression.
sub hamming_distance_string { ( $_[0] ^ $_[1] ) =~ tr/\0// }However, if you really want to use a regular expression (although it won't be as efficient.)
sub hamming_distance_string { () = ( $_[0] ^ $_[1] ) =~ /\0/g }
John -- use Perl; program fulfillment
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