std::bernoulli_distribution::bernoulli_distribution
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                    < cpp | numeric | random | bernoulli distribution
                    
                                                            
                    |   explicit bernoulli_distribution( double p = 0.5 ); 
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(1) | (since C++11) | 
|   explicit bernoulli_distribution( const param_type& params ); 
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(2) | (since C++11) | 
Constructs new distribution object. The first version uses p as the distribution parameter, the second version uses params as the distribution parameter.
[edit] Parameters
| p | - | the p distribution parameter (probability of generating true) | 
| params | - | the distribution parameter set |