Subject: Re: [boost] [random] example code fails inside struct
From: Gevorg Voskanyan (v_gevorg_at_[hidden])
Date: 2011-04-16 08:32:13
Beman Dawes wrote:
> > You can't initialize a class data member like that.
> > boost::uniform_int<> million(1,1000000); is valid in a function body or in
> > namespace-scope, but not in class scope...
>
> Doesn't that create a usage problem because there aren't alternative
> constructors that do work at class scope?
What do you mean? If I guess what you're asking here correctly, then that is a
limitation in C++03 addressed in C++11. Here's the proposal for
that: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2756.htm
It still won't make the code to compile as you have written it, but with slight
changes it will:
struct X
{
boost::mt19937 rng;
boost::uniform_int<> million{1,1000000}; // or million
= boost::uniform_int<>(1, 1000000);
boost::variate_generator<boost::mt19937&, boost::uniform_int<> >
random_value{rng, million};
};
Please let me know if that info wasn't what you were looking for.
HTH,
Gevorg