Difference between revisions of "PrF UG slots value type boolean"
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Revision as of 02:15, October 9, 2008
The Boolean Value Type
A Boolean slot holds a logical Boolean value; that is, a value that is either true or false. To set the value type of a slot to Boolean:
Create the slot, or view the Slot Editor for an existing slot.
Select Boolean from the Value Type menu.
The Name of the slot will be used as a label for the checkbox; make sure this is what you want.
When an instance is created for a class with a Boolean slot, the instance entry field corresponding to the slot is a Boolean field and is displayed as a checkbox:
not Urgent | |
Urgent |
For example, the Personals_Ad class contains the Boolean slot Urgent; the Silly instance of Personals_Ad is not Urgent, while the M137 instance is.