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<font size="-2">Am Sa., 22. Dez. 2018, 17:38 hat Bart <<a
href="mailto:bartjunk64@gmail.com">bartjunk64@gmail.com</a>>
geschrieben:<br>
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<blockquote class="gmail_quote" style="margin:0 0 0
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size="-2">On Sat, Dec 22, 2018 at 1:03 PM Franz Müller <<a
href="mailto:bupa@gmx.at" target="_blank" rel="noreferrer">bupa@gmx.at</a>>
wrote:<br>
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> But maybe there is an easy way to save the state of the
random number generator routine before sorting and to
restore it when the sort is done?<br>
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Save RandSeed and restore it after you're done with your
calls to Random<br>
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<div dir="auto"><font size="-2">Please note that this is not
threadsafe as another thread running the same or even different
code could poke around in the RNG's state as well. </font></div>
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<div dir="auto"><font size="-2">Regards, </font></div>
<div dir="auto"><font size="-2">Sven <br>
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<p>Well, the random number generator itself is not threadsafe
anyway. So if you use threads and need deterministic pseudo-random
numbers, you should encapsulate the RNG into a class that takes
care of this. <br>
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<p>On the other side, every component and every piece of code that
uses random number will interfere with code that needs
reproducible pseudo-random numbers. So if you need that, it
certainly is a good idea to keep control of randseed in your own
code, even if you don't use threads. After thinking it over, I
feel TStringlist should not take care of this problem, rather the
program that needs reproducible numbers should. What would you
suggest?</p>
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