[sc-dev] sort

[Alberto de Campo <adc@xxxxxx>]

while testing my statistics stuff...
it turns out that sort changes the array itself:

a = [3,2,1,4];
// a.sort[2].postln;	// e.g. find second largest item, or
a.median.postln;	// calls sort also..,
a.postln;		// and now, a is [1,2,3,4]!


I find this surprising, and would assume that sort should do .copy first.

also, (on large arrays) quicksort measures faster than mergeSort;
is there some other reason why it should be mergeSort,
or can I change sort to this:

	sort { arg function;
		if (function.isNil) { function = { arg a, b; a <= b }; };
		^this.copy.quickSort(function)
	}

?
best, adc
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Alberto de Campo
Bergstrasse 59/33
A-8020 Graz, Austria
e-mail : decampo@xxxxxx
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