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std::greater

STD：：更大

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

用于执行比较的函数对象。除非专门化，否则调用operator>论类型T...

专门性

...的专业化std::greater对于任何指针类型，都会产生严格的总顺序，即使内置operator>不会的。严格的全序在专业之间是一致的。std::less，，，std::greater，，，std::less_equal，和std::greater_equal对于该指针类型，并且与相应的内建运算符%28施加的偏序一致。<，，，>，，，<=和>=29%。

If the function call operator of the specialization std::greater calls a built-in operator comparing pointers, it yields a strict total order even if the built-in operator> does not.This strict total order is consistent among the specializations std::less, std::greater, std::less_equal, and std::greater_equal, and is also consistent with the partial order imposed by the corresponding built-in operators.(since C++14)

The standard library provides a specialization of std::greater when T is not specified, which leaves the parameter types and return type to be deduced. greater function object implementing x > y deducing argument and return types (class template specialization)greaterfunction object implementing x > y deducing argument and return types (class template specialization)(since C++14)
greater<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)bool
first_argument_type(deprecated in C++17)T
second_argument_type(deprecated in C++17)T

成员函数

operator()checks if the first argument is greater than the second (public member function)

STD：：更大：：操作员%28%29

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

检查是否lhs是更大比rhs...

参数

lhs, rhs-values to compare

返回值

true如果lhs > rhs，，，false否则。

例外

%280%29

可能的实施

ConstT&rhs，constT&rhs%29 const{返回lhs>rhs；}

*。

另见

lessfunction object implementing x < y (class template)

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