Nullable Value Types

TODO

Dim #LikesChocolate As Boolean

The variable #LikesChocolate can have one of three values: True, False, or #Null. Its initial value is #Null.

To use a nullable type variable

TODO

Default values

TODO

To change values

TODO

To return values

TODO

To compare nullable variables

TODO

#b1#b2#b1 And #b2#b1 Or #b2
#Null#NullNULLNULL
#NullTrueNULLTrue
#NullFalseFalseNULL
True#NullNULLTrue
TrueTrueTrueTrue
TrueFalseFalseTrue
False#NullFalseNULL
FalseTrueFalseTrue
FalseFalseFalseFalse

Nullable types and data

TODO

See also