nothing
Type
constant
Summary
The value used to indicate a variable which has not been explicitly assigned a value
Syntax
nothing
Description
Use nothing to access the value the engine initially places in variables which do not have an initializer.
The nothing value behaves like empty when used in string context, and like zero when used in number context.
To test whether a variable (or expression) has the value nothing, use the is strictly nothing operator.
Examples
put nothing is strictly nothing
put nothing is empty -- true
put nothing is 0 -- true
Related
operator: is strictly a, is not strictly a