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The Default operator is used to provide a default value for a property or attribute of a class. | The Default operator is used to provide a default value for a property or attribute of a class. | ||
The syntax for using the | The syntax for using the Default operator is as follows: | ||
context ClassName | context ClassName | ||
inv: self.propertyName = defaultValue | inv: self.propertyName = defaultValue | ||
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For example, consider a class named "Person" that has a property named "age". We can use the "default" operator to provide a default value of 18 for the "age" property, like this: | For example, consider a class named "Person" that has a property named "age". We can use the "default" operator to provide a default value of 18 for the "age" property, like this: | ||
context Person | context Person | ||
inv: self.age = 18 | inv: self.age = 18 | ||
Revision as of 06:55, 14 April 2023
The Default operator is used to provide a default value for a property or attribute of a class.
The syntax for using the Default operator is as follows:
context ClassName inv: self.propertyName = defaultValue
Here, "ClassName" refers to the name of the class, "propertyName" refers to the name of the property or attribute, and "defaultValue" refers to the default value that is assigned to the property if no other value is provided.
For example, consider a class named "Person" that has a property named "age". We can use the "default" operator to provide a default value of 18 for the "age" property, like this:
context Person inv: self.age = 18
This means that if no age is explicitly assigned to a person object, it will automatically be set to 18.
Overall, the "default" operator is useful for ensuring that objects are always initialized with a certain value, which can help prevent errors and ensure consistency in the system.