Identifier

An identifier is a name used in a Frost program to refer to a class, method, variable, or other program element.

Identifiers must begin with a letter or underscore (_), and continue with any number of letters, underscores, or digits. Keywords are reserved and may not be used as identifiers. An underscore by itself is not a legal identifier, as that is used to ignore values when extracting values from a tuple in a multiple assignment.