On 18/04/12 08:14, jerro wrote:
I agree that copying random generators is error prone but randomSampler taking the generator by ref wouldn't be enough to fix that problem. The generator gets saved in a member in a RandomSampler struct, so that member would have to be a pointer to avoid copying (so RandomSampler would have to be instantiated with Random* instead of Random). I usually avoid this kind of problems by using pointers to random generators instead of random generators everywhere.
I suppose a pointer is one solution, but that has an issue all of its own -- what if the pointed-to RNG is deleted? Copying the RNG by value is at least safe in this sense.
