Hi davido, I was too quick to say that the Schwartzian is slower than simple sort. I just did another benchmark, by generating 1000 longer strings of up to 1000 characters (I had shorter strings of up to 10 characters before). And when I ran the script again, I got quite different results.

Benchmark: timing 1000 iterations of Schwartzian, Simple...
Schwartzian: 36 wallclock secs (35.58 CPU) @ 28.11/s (n=1000)
    Simple: 149 wallclock secs (149.35 CPU) @  6.70/s (n=1000)
              Rate      Simple Schwartzian
Simple      6.70/s          --        -76%
Schwartzian 28.1/s        320%          --

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So uc and lc simple sort (points well taken from Abigail-II) do become less efficient when the length of the strings to compare are very long. So benchmark doesn't always tell the story. So shall I rephrase the efficiency remark as 'it depends'? :-)

In reply to Re: Re: Re: Re: noncase-sensitive sorting by Roger
in thread noncase-sensitive sorting by texuser74

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