sampler

type Uniform interface {
	Initialize(sampleRange uint64)
	// Sample returns length numbers in the range [0,sampleRange). If there
	// aren't enough numbers in the range, an error is returned. If length is
	// negative the implementation may panic.
	Sample(length int) ([]uint64, error)

	Seed(int64)
	ClearSeed()

	Reset()
	Next() (uint64, error)
}

type Weighted interface {
	Initialize(weights []uint64) error
	Sample(sampleValue uint64) (int, error)
}

type WeightedWithoutReplacement interface {
	Initialize(weights []uint64) error
	Sample(count int) ([]int, error)

	Seed(int64)
	ClearSeed()
}