isSeedable

Test if Rng is seedable. The overload taking a SeedType also makes sure that the Rng can be seeded with SeedType.

A seedable random-number generator has the following additional features:

it has a 'seed(ElementType)' function

template isSeedable(Rng, SeedType)
template isSeedable(Rng)
template isSeedable (
Rng
) {
enum bool isSeedable;
}

Examples

struct validRng
{
    @property uint front() {return 0;}
    @property bool empty() {return false;}
    void popFront() {}

    enum isUniformRandom = true;
}
static assert(!isSeedable!(validRng, uint));
static assert(!isSeedable!(validRng));

struct seedRng
{
    @property uint front() {return 0;}
    @property bool empty() {return false;}
    void popFront() {}
    void seed(uint val){}
    enum isUniformRandom = true;
}
static assert(isSeedable!(seedRng, uint));
static assert(!isSeedable!(seedRng, ulong));
static assert(isSeedable!(seedRng));

The OpenD Programming Language

isSeedable

Examples

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