[Octave-bug-tracker] [bug #60860] Implementation of memoize

[Guillaume]

Follow-up Comment #4, bug #60860 (project octave):

Thanks for testing. I don't think you do anything wrong. I see memoize more
useful for caching the output of lengthy computations (taking more time than
the caching overhead). You see something similar when running your example in
Matlab:


>> NN = 255; x = zeros(1,NN); tic; for i = 1:NN, x(i) = nonmemo(i); end;toc
Elapsed time is 0.004546 seconds.
>> NN = 1023; x = zeros(1,NN); tic; for i = 1:NN, x(i) = nonmemo(i);end;toc
Elapsed time is 0.005433 seconds.
>> NN = 255; x = zeros(1,NN); tic; for i = 1:NN, x(i) = memo(i); end;toc
Elapsed time is 0.090636 seconds.
>> NN = 1023; x = zeros(1,NN); tic; for i = 1:NN, x(i) = memo(i);end;toc
Elapsed time is 0.208253 seconds.


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