vg::LazyRNG Class Reference

#include <utility.hpp>

Public Member Functions
	LazyRNG (const std::function< string(void)> &get_seed)
minstd_rand::result_type	operator() ()

Private Attributes
std::function< string(void)>	get_seed
unique_ptr< minstd_rand >	rng
	Backing RNG, or empty. More...

Detailed Description

AN RNG that can skip initialization and any hashing of the seed until it is needed. Not thread safe, not even a little bit.

Constructor & Destructor Documentation

LazyRNG()

vg::LazyRNG::LazyRNG

(

const std::function< string(void)> &

get_seed

)

Make a new LazyRNG. Seed-generating closure will not be used after object is destroyed.

Member Function Documentation

operator()()

minstd_rand::result_type vg::LazyRNG::operator()

(

)

Get a random number, computing the seed and initilaizing the RNG if that has not yet happened.

Member Data Documentation

get_seed

std::function<string(void)> vg::LazyRNG::get_seed

private

Closure used to generate the seed. Makes sure to copy and not store a reference to a temporary closure.

rng

unique_ptr<minstd_rand> vg::LazyRNG::rng

private

Backing RNG, or empty.

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The documentation for this class was generated from the following files:

• src/utility.hpp
• src/utility.cpp