public member function （公共成員函式）
<random>
result_type operator()();
生成隨機數
Returns a new random number. （返回一個新的隨機數。）
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. （引擎的轉換演算法選擇內部表中的一個值（由函式返回），並用從其基類引擎獲得的新值替換它。）
The generation algorithm simply returns the value picked. （生成演算法簡單地返回所選的值。）
返回值
A new random number. （一個新的隨機數。）
result_type （結果型別）is a member type, defined as an alias of the type of the numbers generated by the base engine. （是一種成員型別，定義為由基類引擎生成的數字型別的別名。）
示例
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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;
}
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可能的輸出
複雜度
Determined by the base engine. （由基類引擎決定。）