An expression is a piece of code that returns a value.
Expression Types
An expression can be:
Variable
An expression can be a simple variable (identifier):
Examples:
_myVariable
globalVariable
Operation
An expression can be an operation including its operands.
Examples:
5 * 6
a % 2
b * c
Scripting Command
An expression can be a scripting command returning a value including its arguments.
Examples:
count myArray
position unit1
Control Structure
An expression can be a control structure returning a value.
Examples:
; returns myValueA or myValueB
if (myCondition) then { myValueA } else { myValueB }