Identifiers 标识符

Identifiers name program entities such as variables and types. An identifier is a sequence of one or more letters and digits. The first character in an identifier must be a letter.

标志符在编程中可以是变量和类型。一个标志符是由一个或多个字母和符号组成。它的第一个字符必须是字母。

identifier = letter { letter | unicode_digit } .
a
_x9
ThisVariableIsExported
αβ

标志符 = 字母 { 字母 | unicode字符 } .

Some identifiers are predeclared.

有些标志符需要预定义