std::random_device::random_device

参数

token

An identifier of a system-specific source of randomness.
The default value is a valid source for the system.
For example, on some implementations for linux systems, this parameter is interpreted as a filesystem path, and has a default value of"/dev/urandom".
string is a standard instantiation ofbasic_string.

示例

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// random_device constructor
#include <iostream>
#include <random>

int main ()
{
  std::random_device rd;

  std::cout << "Random value: " << rd() << std::endl;

  return 0;
}

Random value: 2909135809

另见

random_device::operator()

Generate random number (public member function) （生成随机数 (公共成员函数)）