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VARIABLES, LITERALS, AND TYPES

Identifiers

Identifiers are names of variables, functions, and labels. They also apply to BrightScript object methods (i.e. functions)

and interfaces (which appear after a dot "." operator). Identifiers have the following rules:

• Must start with an alphabetic character (a-z).

• May consist of alphabetic characters, numbers, or the underscore symbol ("_").

• Are not case sensitive.

• May be of any length.

• May not be a reserved word (see the Appendix B for a list of reserved words).

• (variables only) May end with an optional type declaration ("$" for a string, "%" for an integer, "!" for a float, "#" for

a double).

Examples

boy5

super_man$

42%

Types

BrightScript supports both dynamic typing and declared types. This means that every value has a type determined at

runtime, but variables can also be instructed to always contain a value of a specified type. If a value is assigned to a

variable that has a specified type, the type of the value will be converted to the variable type if possible. If conversion is

impossible, a runtime error will occur.

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