谷歌c++代码规范（1）---命名

通用命名规则

原文

Function names, variable names, and filenames should be descriptive; eschewabbreviation.
Give as descriptive a name as possible, within reason. Do not worry about saving horizontal space as it is far more important to make your code immediately understandable by a new reader. Do not use abbreviations that are ambiguous or unfamiliar to readers outside your project, and do not abbreviate by deleting letters
within a word.```
一句话，就是不要担心浪费内存空间，命名少用缩写，语义明确才是最重要的。

## 文件名 ##
原文

Filenames should be all lowercase and can include underscores () or dashes (-).Follow the convention that your project uses. If there is no consistent local pattern to follow, prefer ““.

规则：字母全部小写，可以使用下划线‘_' 或者扩折号 '-'。另外，文件名最好多加一些定义。例如 http_server_logs.h 而不是logs.h.

## 类型名 ##

Type names start with a capital letter and have a capital letter for each new word,with no underscores: MyExcitingClass, MyExcitingEnum. The names of all types — classes, structs, typedefs, and enums — have the same naming convention. Type names should start with a capital letter and have a capital

letter for each new word. No underscores.

类型名包括类名，结构体，枚举，以及typedef。其命名方式符合大驼峰法，也就是名字由一个或者多个单词组成，每个单词首字母大写。

## 变量名 ##

The names of variables and data members are all lowercase, with underscores between words. Data members of classes (but not structs) additionally have trailing underscores. For instance: a_local_variable, a_struct_data_member,a_class_data_member_

变量名字母全部小写，字母间使用下划线联接。类成员变量需要在名称后增加一个尾下划线，例如 a_local_variable,而类成员变量 a_class_data_member_.

## 全局变量名##

There are no special requirements for global variables, which should be rare in any case, but if you use one, consider prefixing it with g_ or some other marker to easily distinguish it from local variables.

在谷歌规范中并没有对全局变量的具体限制，只是建议我们为全局变量起一个明显的区别相对于其他，比如在名字前加个统一的前缀例如g_。

##常量名##

Use a k followed by mixed case, e.g., kDaysInAWeek, for constants defined globally or within a class.As a convenience to the reader, compile-time constants of global or class scope follow a different naming convention from other variables. Use a k followed by

words with uppercase first letters

“`

常量名字的规范是混合型即前缀k+驼峰法，例如 const int kDaysInAWeek=3.