Hi all,

Can someone explain the goal of param and param_type in all the random
number distribution class templates?

Thanks,

Ares Lagae

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On Jun 23, 12:41 am, Ares Lagae <ares.la...@gmail.com> wrote:
> Hi all,
>
> Can someone explain the goal of param and param_type in all the random
> number distribution class templates?

A meaningful use-case is, that you can write generic code
- aka template code - that works for every type that satisfies
the requirements for a random number distribution, e.g.

template<class D>
typename D::param_type compute(D& distr, const typename D::param_type&
p) {
 distr.param(p);
 ...
 std::cout << distr;
 std::cin >> distr;
 return d.param();
}

See also the proposal document

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1933.pdf

section 4.4.2 (page 4).

HTH & Greetings from Bremen,

Daniel Kr=FCgler




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I haven't though of that, it makes sense.

Thanks for your reply.

Best regards,

Ares

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