constexprT make_from_tuple(Tuple&&t); (C++17 起) 构造T类型对象,以元组t的元素为构造函数的参数。 参数 t-元组,其元素被用作T构造函数的参数 返回值 被构造的T对象。 注意 元组不必是std::tuple,可以为任何支持std::get和std::tuple_size的类型所替代;特别是可以用std::array和std::pair。
template< class T, tuple-like Tuple > constexpr T make_from_tuple( Tuple&& t ); (since C++23) Construct an object of type T, using the elements of the tuple t as the arguments to the constructor. Given the exposition-only function /*make-from-tuple-impl*/ defined as follows: tem...
Make _DinstinctTuple inherit from tuple Loading Loading status checks… 5788618 Update test to include named tuple Loading Loading status checks… c9c6e8a View details patrick-kidger merged commit 3de1f13 into patrick-kidger:main Aug 29, 2024 2 checks passed Copy link Owner patrick-kidger co...
make_tuple的一个优点在于存储编译器自动取决于对象的类型,而不必显式指定。 不要使用显式模板参数 (如 make_tuple<int, int>(1, 2) ),当您使用make_tuple时,因为不必要地深入的并添加可能导致编译失败的复杂 rvalue 引用问题。 示例 c++ // std_tr1__tuple__make_tuple.cpp// compile by using: /EHs...
In this HW, we will implement a very aged prediction problem from the financial field. Given a series of stock prices, including daily open, high, low, and close prices, decide your daily action and make your best profit for the future trading. Can you beat the simple “buy-and-hold”...
<iostream> #include <tuple> struct Foo { Foo(int first, float second, int third) { std::cout << first << ", " << second << ", " << third << "\n"; } }; int main() { auto tuple = std::make_tuple(42, 3.14f, 0); std::make_from_tuple<Foo>(std::move(tuple)); }...