default random object?
Andrei Alexandrescu
SeeWebsiteForEmail at erdani.org
Sun Feb 15 17:27:38 PST 2009
Lionello Lunesu wrote:
> Andrei Alexandrescu wrote:
>> auto rng = Random(unpredictableSeed);
>> auto a = 0.0, b = 1.0;
>> auto x1 = uniform!("[]")(rng, a, b);
>> auto x2 = uniform!("[)")(rng, a, b);
>> auto x3 = uniform!("(]")(rng, a, b);
>> auto x4 = uniform!("()")(rng, a, b);
>
> I love your templates as much as the next guy, but let's not forget the
> possibility of using different function names instead of templating
> everything!?
I couldn't find good names. uniformOpenClosed, uniformOC,
uniformOpenLeft... what would be some good names?
> And, as other have said, I'm ok with [) since that's what rand()%max
> boiled down to as well. Futhermore, since arrays in D are also [), users
> of D get used to it so it's not odd at all.
Ok. Let me just note that rand()%max is a lousy method of generating
random numbers between 0 and max-1 and everybody should put that in the
bin with Popular Examples That Should Never Be Used, together with
exponential Fibonacci, linear-space factorial, and bubblesort.
Andrei
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