Null

Unlike many modern programming languages, LSL lacks an explicit null keyword (variables cannot be assigned null). null is usually used to indicate that the variable holds no value. In LSL, "zero values" are used in its place. Often these values have a meaning equivalant to null when passed to specific functions as parameters or when returned by a function.

Zero Values

Type	Literal	Constant	Description
string	""	none	empty string
list	[]	none	empty list
integer	0	FALSE*	integer zero
float	0.0	none	float zero
vector	<0.0, 0.0, 0.0>	ZERO_VECTOR	zero-magnitude vector
rotation	<0.0, 0.0, 0.0, 1.0>	ZERO_ROTATION	identity rotation
key	"000000-0000-0000-0000-000000000000"	NULL_KEY	special reserved key

* Only used in boolean expressions.

Functions

llParseStringKeepNulls

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Value | Constant | Functions | Reset