public member function
<random>

std::shuffle_order_engine::operator()

result_type operator()();
Generate random number
Returns a new random number.

The engine's transition algorithm picks a value in the internal table (which is returned by the function) and replaces it with a new value obtained from its base engine.

The generation algorithm simply returns the value picked.

Parameters

None

Return value

A new random number.
result_type is a member type, defined as an alias of the type of the numbers generated by the base engine.

Example

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// shuffle_order_engine::operator()
#include <iostream>
#include <chrono>
#include <random>

int main ()
{
  // obtain a seed from the system clock:
  unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();

  // knuth_b is a standard shuffle_order_engine type:
  std::knuth_b generator (seed);
  std::cout << "Random value: " << generator() << std::endl;

  return 0;
}


Possible output:
Random value: 304242968

Complexity

Determined by the base engine.

See also

shuffle_order_engine::discard
Advance internal state (public member function)

C++