CppIterators：仅标头的C ++库，提供类似Rust的迭代器

CppIterators 阶乘示例 int64_t factorial ( int64_t x) { return Iter::Range ( int64_t ( 1 ), x). Product (); } int main () { for ( auto [i, x] : Iter::Range ( 2 ). Map (factorial). Take ( 10 ). Enumerate ( 1 )) std::cout << i << " ! = \t " << x << " \n " ; } 代码显示： 1! = 1 2! = 2 3! = 6 4! = 24 5! = 120 6! = 720 7! = 5040 8! = 40320 9! = 362880 10! = 3628800