Use Iskindofclas to discover whether an object is an instance of a class or its subclasses

Discovers whether an object is an instance of a particular class or its subclasses

To discover whether an object is an instance of a class or its subclasses, call the method on the object isKindOfClass: . When an application needs to discover its response to a message (either implemented or inherited), it sometimes makes the above checks.

static int sum = 0;

For (ID item in MyArray) {

if ([Item Iskindofclass:[nsnumber class]]) {

int i = (int) [item intvalue];

sum + = i;

}

}

isKindOfClass:method to treat an Class object of the type as a parameter, and to get this object, call the method on the class symbol class . The Boolean value returned by this method is then evaluated and the corresponding operation continues.

NSObjectOther methods are declared to discover information about object inheritance. For example, the isMemberOfClass: method tells you whether an object is an instance of a particular class, and isKindOfClass: tells you whether the object is a member of that class or any of its descendant classes.

Use Iskindofclas to discover whether an object is an instance of a class or its subclasses