Namespaces
Variants

std::binomial_distribution<IntType>:: param

From cppreference.net

C++
Numerics library
Pseudo-random number generation
Random number distributions
Uniform distributions
(C++11)
(C++11)
(C++11)
Bernoulli distributions
(C++11)
(C++11)
(C++11)
(C++11)
Poisson distributions
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
Normal distributions
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
Sampling distributions
(C++11)
(C++11)
(C++11)
std::binomial_distribution
param_type param ( ) const ;
(1) (自 C++11 起)
void param ( const param_type & params ) ;
(2) (自 C++11 起)

管理关联的分布参数集。

1) 返回关联的参数集。
2) 将关联参数集设置为 params 。

目录

参数

params - 关联参数集的新内容

返回值

1) 关联参数集。
2) (无)

复杂度

常量。

示例

运行此代码 
#include <iostream>
#include <random>
int main()
{
    std::random_device rd;
    std::mt19937 gen(rd());
    using BinomialDist = std::binomial_distribution<>;
    BinomialDist bino_dis(1, 0.5);
    std::cout << "A sample of Binomial(  1, 0.5): " << bino_dis(gen) << '\n';
    // Use another parameter set
    bino_dis.param(BinomialDist::param_type(100,0.9));
    std::cout << "A sample of Binomial(100, 0.9): " << bino_dis(gen) << '\n';
}

可能的输出： 

A sample of Binomial(  1, 0.5): 0
A sample of Binomial(100, 0.9): 94