Randomizer Class Reference

#include <Randomizer.hxx>

Inheritance diagram for Randomizer:

Collaboration diagram for Randomizer:

Public Member Functions
	Randomizer ()=default
template<typename Iterator >
void	shuffle (Iterator begin, Iterator end)
template<typename Iterator >
Iterator	choose (Iterator begin, Iterator end)
	Pick random item from container. More...

Private Types
template<typename IntType >
using	UniformIntDist = std::uniform_int_distribution< IntType >

Static Private Attributes
static thread_local std::mt19937	generator {std::random_device{}()}

Additional Inherited Members
Static Public Member Functions inherited from Singleton< Randomizer >
static Randomizer &	instance (void)
	Get an instance of the singleton. More...
Protected Member Functions inherited from Singleton< Randomizer >
	Singleton () noexcept=default
	~Singleton () noexcept=default

Detailed Description

Definition at line 9 of file Randomizer.hxx.

Member Typedef Documentation

UniformIntDist

template<typename IntType >

using Randomizer::UniformIntDist = std::uniform_int_distribution<IntType>

private

Definition at line 13 of file Randomizer.hxx.

Constructor & Destructor Documentation

Randomizer()

Randomizer::Randomizer ( )

default

Member Function Documentation

choose()

template<typename Iterator >

Iterator Randomizer::choose ( Iterator  begin, Iterator  end  )

inline

Pick random item from container.

@threadsafe

Parameters

begin	the starting iterator
end	the pointer following the last value

Returns

a random iterator between [begin, end)

Definition at line 29 of file Randomizer.hxx.

  {
    using DiffType = typename std::iterator_traits<Iterator>::difference_type;
    DiffType upper{std::distance(begin, end) - 1};
    UniformIntDist<DiffType> distn{DiffType{0}, upper};
    std::advance(begin, distn(generator));
    return begin;
  }

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shuffle()

template<typename Iterator >

void Randomizer::shuffle ( Iterator  begin, Iterator  end  )

inline

Definition at line 18 of file Randomizer.hxx.

{ std::shuffle(begin, end, generator); }

Member Data Documentation

generator

thread_local std::mt19937 Randomizer::generator {std::random_device{}()}

staticprivate

Definition at line 11 of file Randomizer.hxx.

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

• src/services/Randomizer.hxx
• src/services/Randomizer.cxx