1 struct validRng
2 {
3 @property uint front() {return 0;}
4 @property bool empty() {return false;}
5 void popFront() {}
6
7 enum isUniformRandom = true;
8 }
9 static assert(!isSeedable!(validRng, uint));
10 static assert(!isSeedable!(validRng));
11
12 struct seedRng
13 {
14 @property uint front() {return 0;}
15 @property bool empty() {return false;}
16 void popFront() {}
17 void seed(uint val){}
18 enum isUniformRandom = true;
19 }
20 static assert(isSeedable!(seedRng, uint));
21 static assert(!isSeedable!(seedRng, ulong));
22 static assert(isSeedable!(seedRng));
The D Programming Language's Unofficial Docs
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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: