Am Sa., 22. Dez. 2018, 17:38 hat Bart <[email protected]
<mailto:[email protected]>> geschrieben:
On Sat, Dec 22, 2018 at 1:03 PM Franz Müller <[email protected]
<mailto:[email protected]>> wrote:
> 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?
Save RandSeed and restore it after you're done with your calls to Random
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.
Regards,
Sven
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.
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?
_______________________________________________
fpc-devel maillist - [email protected]
http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
