Variables, literals, and types, Identifiers, Types – BrightSign BrightScript 3.0 Reference Manual User Manual
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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
for a list of reserved words).
•
(
variables only) May end with an optional type declaration ("
$" for a string, "%" for an integer, "!" for a float, "#" for
a double).
Examples
a
boy5
super_man$
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.