# std::char_traits<CharT>::eq, std::char_traits<CharT>::lt

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< cpp‎ | string‎ | char traits

| (1) |
static bool eq( char_type a, char_type b ); |  | (until C++11)
static constexpr bool eq( char_type a, char_type b ) noexcept; |  | (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 ) noexcept; |  | (since C++11)

Compares two characters.

1) Compares a and b for equality.
2) Compares a and b in such a way that they are totally ordered.

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)

### Parameters

a, b | - | character values to compare

### Return value

1) true if a and b are equal, false otherwise.
2) true if a is less than b, false otherwise.

### Complexity

Constant.

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