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std::multiplies

STD：乘数

Defined in header ​​
template< class T > struct multiplies;​(until C++14)
template< class T = void > struct multiplies;​(since C++14)

用于执行乘法的函数对象。有效呼叫operator*关于类型的两个实例T...

专门性

The standard library provides a specialization of std::multiplies when T is not specified, which leaves the parameter types and return type to be deduced. multiplies function object implementing x * y deducing argument and return types (class template specialization)multipliesfunction object implementing x * y deducing argument and return types (class template specialization)(since C++14)
multiplies<void>function object implementing x * y deducing argument and return types (class template specialization)

成员类型

TypeDefinition
result_type(deprecated in C++17)T
first_argument_type(deprecated in C++17)T
second_argument_type(deprecated in C++17)T

成员函数

operator()returns the product of two arguments (public member function)

乘数：：操作员%28%29

T operator()( const T& lhs, const T& rhs ) const;​(until C++14)
constexpr T operator()( const T& lhs, const T& rhs ) const;​(since C++14)

的乘积lhs和rhs...

参数

lhs, rhs-values to multiply

返回值

结果lhs * rhs...

例外

%280%29

可能的实施

ConstT运算符%28%29%28 const T&LHS，Const T&RHS%29 Const{Ref LHS%2ARHS；}

*。

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在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。

http：//en.cppreference.com/w/cpp/实用程序/函数/乘数

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