Operators

There are many different types of Operators that you will use within your Statelake script code.

But what is an Operator?

An Operator is simply a special character, symbol, or keyword that allows the script compiler to perform mathematical or logical equations.

Arithmetic Operators

Arithmetic Operators work with numeric data types such as Float and Integer.

Numeric data types can be further manipulated and compared through the use of Relational Operators.

Operator	Operation	Operand	Result	Example
+	Addition	Float, Integer	Float, Integer	1 + 2.06
-	Subtraction	Float, Integer	Float, Integer	4 - 3.76
*	Multiplication	Float, Integer	Float, Integer	2.67 * 5
/	Float Division	Float, Integer	Float	4.5 / 3
div	Integer Division	Integer	Integer	10 div 3 (result 3)
mod	Remainder	Integer	Integer	10 mod 3 (result 1)

Assignment Operator

An Assignment Operator is used to set the value of a variable or parameter.

Operator	Operation	Operand	Result	Example
:=	Assignment	Any data type	Any data type	Value := 10;

Boolean Operators

Boolean Operators are used within expressions to join multiple conditions. The result of the expression depends on the result of the conditions, and how they are joined.

An example of usage is within an If statement with multiple conditions. Each condition can be joined through the use of a Boolean Operator.

if (Value>10) and (MyVariable=True) returns a True result only if both conditions evaluate to True .

if (Value>10) or (MyVariable=True) returns a True result if only one of the conditions evaluate to True.

if not (Value>10) will result in the test being reversed, and will only evaluate to True if the variable Value is less than 10.

While hardly ever used in a daily situation, xor is widely used however in cryptography, error checking and fault tolerance. Xor compares two input bits and generates one output bit. Where these two bits are the same, then 0 is returned, and where they are not the same, a 1 is returned.

Operator	Operation	Operand	Result	Example
not	negation	Boolean	Boolean	if not (Value > 10) then
and	conjunction	Boolean	Boolean	if (Value>10) and (x=y) then
or	disjunction	Boolean	Boolean	if (Value>10) or (x=y) then
xor	exclusive disjunction	Boolean	Boolean	if (Value>10) xor (x=y) then

Relational Operators

Relational Operators are used to compare the relationship between two data entities, and can compare any data type such as numeric, character string or logical data. The result of the comparison will be either True ( 1 ) or False ( 0 ), and can be used to make a decision regarding program flow.

To compare differing data types using these operators, first convert one data type side so that both sides are the same data type.

When using the less than or greater than operators against String data types, the comparison is performed using alphabetical sorting - abc is less than ade.

Operator	Operation	Operand	Result	Example
=	Equal	Any Data Type	Boolean	if 'abc' = 'abc' then
<>	Not Equal	Any Data Type	Boolean	if 3 <> 4 then
<	Less Than	Any Data Type	Boolean	if X < Y then
>	Greater Than	Any Data Type	Boolean	if 3 > 5 then
<=	Less than or equal	Any Data Type	Boolean	if X <= Y then
>=	Greater than or equal	Any Data Type	Boolean	if 5 >= 8 then

String Operators

String Operators work with String data types and will add then together to join them into a single string.

Strings can be compared through the use of Relational Operators.

Operator	Operation	Operand	Result	Example
+	Concatenation	String	String	Value := 'abc' + 'def';