> struct LinearCongruentialEngine(UIntType,UIntType a,UIntType c,UIntType m);
>> bool empty;
>>> Always true (random generators are infinite ranges).

should be "Always false"

> alias MinstdRand0; 
> alias MinstdRand;
>> Example:
>>> // seed with a constant
>>> auto rnd0 = MinstdRand0(1);
>>> auto n = rnd0.popFront; // same for each run
>>> // Seed with an unpredictable value
>>> rnd0.seed(unpredictableSeed);
>>> n = rnd0.popFront; // different across runs

should call .front, instead of .popFront (twice).