std::type_index::operator==,!=,<,<=,>,>=

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std::type_index
成员函数
type_index::type_index
type_index::operator=
type_index::operator!=
type_index::operator<
type_index::operator<=
type_index::operator>
type_index::operator>=
type_index::hash_code
type_index::name
 
bool operator==( const type_index& rhs ) const;
(C++11 起)
bool operator!=( const type_index& rhs ) const;
(C++11 起)
bool operator<( const type_index& rhs ) const;
(C++11 起)
bool operator<=( const type_index& rhs ) const;
(C++11 起)
bool operator>( const type_index& rhs ) const;
(C++11 起)
bool operator>=( const type_index& rhs ) const;
(C++11 起)

比较底层的std::type_info对象。

1-2)检查底层的std::type_info对象是否表示同一类型。

3-6)按实现定义顺序的定义,比较底层的std::type_info对象。此比较由type_info::before执行。

[编辑] 参数

rhs - 另一个要比较的type_index对象

[编辑] 返回值

1)若底层的std::type_info对象表示同一类型则为true,否则为false

2)若底层的std::type_info对象不表示同一类型则为true,否则为false

3-6)若底层的std::type_info所表示的类型按对应顺序排列,则为true,否则为false

[编辑] 异常

noexcept规定:  
noexcept
  (C++11 起)