Page History
Panel | ||
---|---|---|
|
TRUE
UNKNOWNUse |
This is the boolean value TRUE.
...
bgColor | white |
---|
FALSE
This is the boolean value FALSE.
...
bgColor | white |
---|
UNKNOWN
...
the '?' (question mark), representing UNKNOWN, to check if an expression or an attribute has a value. Example Suppose a model with an entity Person and attributes Person.name and Person.age. In runtime, a user fills out a form and enters his name, but forgets to fill out his age. As a result:
|
...
|
...
|
...
Panel | ||
---|---|---|
| ||
TRUEThis is the boolean value TRUE. |
Panel | ||
---|---|---|
| ||
FALSEThis is the boolean value FALSE. |
...
Overview
Content Tools