LSL Operators

Operators are used to cause an operation (or mathematical action) to be performed on two operands. The easy and common example is 1 + 2 where 1 and 2 are operands, and the + is the operator.

This concept can be extended much further with LSL since operands can be variables with the special case of the assignment operators requiring that the left hand side be a variable.

Operator	Description	Usage Example
() [] .	Parenthesis, Brackets, and Dot	do this second (do this first)
(type)	Typecasting	message = "The result is:" + (string) result;
! ~ ++ --	NOT, One's Complement, Increment, Decrement	counter++;
* / %	Multiply, Divide, Modulus	rollover = (count + 1)%5;
-	Subtraction	one = 3 - 2;
+	Addition or joining Strings	two = 1+1; text = "Hello" + "World";
+	Concatenation or joining Lists	myList = [1, 2, 3] + [4, 5]; newList = oldList + addList;
<< >>	Left Shift, Right Shift	eight = 4 << 1;
< <= > >=	Less Than, Less Than Or Equal To, Greater Than, Greater Than or Equal To	isFalse = (6 <= 4);
==  !=	Comparison Equal, Comparison Not Equal	isFalse = ("this" == "that");
&	Bitwise AND	zero = 4 & 2; four = 4 & 4;
^	Bitwise XOR	zero = 4 ^ 4; six = 4 ^ 2;
|	Bitwise OR	four = 4 | 4; six = 4 | 2;
&&	Comparison AND	isFalse = (FALSE && TRUE);
||	Comparison OR	isTrue = (FALSE || TRUE);
= += -= *= /= %=	Assignment	four = 4;

+ Operator

left + right

Left Type	Right Type	Result Type	Description
integer	integer	integer	Adds left and right
integer	float	float	Adds left and right
float	integer	float	Adds left and right
string	string	string	Concatenates right onto the end of left.
list	*	list	Concatenates right onto the end of left.
*	list	list	Affixes left onto the start of right.
vector	vector	vector	Adds left and right
rotation	rotation	rotation	Adds left and right Not useful for combining rotations, use * or / instead.