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std::char_traits::eq

STD：：CHAR[医]性状：EQ，STD：：CHAR[医]特点：

​(1)​
static bool eq( char_type a, char_type b (until C++11)
static constexpr bool eq( char_type a, char_type b (since C++11)
​(2)​
static bool lt( char_type a, char_type b (until C++11)
static constexpr bool lt( char_type a, char_type b (since C++11)

比较两个字符。

1%29比较a和b为了平等。

2%29比较a和b以一种完全有序的方式。

For the char specialization, eq and lt are defined identically to the built-in operators == and < for type unsigned char (not char).(since C++11)

参数

a, b-character values to compare

返回值

1%29true如果a和b是平等的，false否则。

2%29true如果a是再少点比b，，，false否则。

例外

(none)(until C++11)
noexcept specification: noexcept(since C++11)

复杂性

常量。

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