sample() [3/3]

template<typename D , typename RNG , typename... Ts>

DSType<D> sample	(	record_t< DTypes< Ts... >> &	r,
		std::string	address,
		D	dist,
		RNG &	rng,
		std::optional< DSType< D >>	maybe_value
	)

Either samples a value from the specified distribution or observes a value against it, depending on whether data or null is passed as maybe_value.

Template Parameters

D	The type of distribution from which to sample
RNG	The type of PRNG to use
Ts	The distribution types contained in the passed record

Parameters

r	the record into which to sample
address	the address at which to sample
dist	the distribution from which to draw sample(s)
rng	the PRNG to use for sampling
maybe_value	either the value to observe, or std::nullopt to signal that a sample is desired.

Returns

DSType<D> the sampled value