Operators

The = operator sets the value of a constant.

VALUE = 10

The := operator sets the value of a variable.

x := 5

Arithmetic Operators

You can use basic arithmetic operations.

x := y + z ' add
x := y - z ' subtract
x := y * z ' multiply
x := y / z ' divide

Modulo (//) finds the remainder after division.

x := y // z

You can group expressions using parentheses.

x := (y + 4) - (z + 3)
x := ((y + 4) + 4)

Decrement (--) subtracts one from a value, while increment (++) adds one.

x++
x--

A relational operator tests the relationship between two values. Expressions that use them return a non-zero number if true, or zero if false.

You can test if two values are equal with ==, or not equal with <>.

x == y
x <> y

You can also test inequality.

x < y ' x is less than y
x > y ' x is greater than y
x =< y ' x is equal to or less than y
x => y ' x is equal to or greater than y

Logical operators, or boolean operators allow you to create more specific tests in your application.

AND

When both expressions are true, return true.

x and y

OR

When either of the expressions are true, return true.

x or y

NOT

Negate the result of an expression. I.e. if the expression is true, return false; if false, return true.

x and not y