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std::discre...distribution(3) C++ Standard Libarystd::discre...distribution(3) NAME std::discrete_distribution::discrete_distribution - std::discrete_dis- tribution::discrete_distribution Synopsis discrete_distribution(); (1) (since C++11) template< class InputIt > (2) (since C++11) discrete_distribution( InputIt first, InputIt last ); discrete_distribution( std::initializer_list<double> weights ); (3) (since C++11) template< class UnaryOperation > discrete_distribution( std::size_t count, double xmin, double (4) (since C++11) xmax, UnaryOperation unary_op ); explicit discrete_distribution( const param_type& params ); (5) (since C++11) Constructs a new distribution object. 1) Default constructor. Constructs the distribution with a single weight p={1}. This distribution will always generate 0. 2) Constructs the distribution with weights in the range [first, last). If first == last, the effects are the same as of the default constructor. 3) Constructs the distribution with weights in weights. Effectively calls discrete_distribution(weights.begin(), weights.end()). 4) Constructs the distribution with count weights that are generated using function unary_op. Each of the weights is equal to w i = unary_op(xmin + (i + 0.5)), where = (xmax xmin) count and i {0, ..., count1}. xmin and xmax must be such that > 0. If count == 0 the effects are the same as of the default constructor. 5) Constructs the distribution with params as the distribution para- meters. Parameters the range of elements defining the numbers to use as weights. The type first, last - of the elements referred by InputIterator must be con- vertible to double weights - initializer list containing the weights unary operation function object that will be applied. The signature of the function should be equivalent to the following: Ret fun(const Type &a); unary_op - The signature does not need to have const &. The type Type must be such that an object of type dou- ble can be dereferenced and then implicitly converted to Type. The type Ret must be such that an object of type double can be derefer- enced and assigned a value of type Ret. params - the distribution parameter set Type requirements - InputIt must meet the requirements of LegacyInputIterator. http://cppreference.com 2022.07.31 std::discre...distribution(3)
NAME | Synopsis | Parameters | Type requirements
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