Variables

Any programming language that aims to alter the flow of a program requires variables. A variable stores a value that can be read or modified later in the program.

Usage

Variables

To define a new variable, the SET-statement can be used.

/* define a new variable */
SET &TEST_VAR = "VALUE";

In PRX, any variable needs to be prefixed by an ampersand (&). To free up the memory of the variable again, we use the UNSET-statement.

/* free memory of variable */
UNSET &TEST_VAR;

Lists

To store multiple values within a single variable, lists can be used. To define a new list, we use square brackets [].

/* define a new list */
SET &TEST_LST = ["VAL1","VAL2","VAL3"];

Lists are especially useful when you need to iterate through a predefined set of values. But more on that later.

In PRX, every variable is defined within the global scope. There are no local variables restricted to a specific block. Variables defined in includes can be accessed normally within the including program.

In the next chapter, we will discuss the different data types that are available in PRX.