KVO/KVC 中set方法

[student setValue:@"one" forKey:@"name"];

[student setValue:[NSNumber numberWithInt:17] forKey:@"age"];

 在设置一个标量值时，需要先将标量值包装成一个NSNumber或NSValue对象

NSArray *keys = [NSArray arrayWithObjects:@"name", @"age", nil];

NSDictionary *dict = [student dictionaryWithValuesForKeys:keys];

NSArray *keys = [NSArray arrayWithObjects:@"name", @"age", nil];

NSArray *values = [NSArray arrayWithObjects:@"One", [NSNumber numberWithInt:16], nil];

NSDictionary *dict = [NSDictionary dictionaryWithObjects:values forKeys:keys];

[student setValuesForKeysWithDictionary:dict];

KVO/KVC 中set方法

原文：http://www.cnblogs.com/Lidear/p/4341765.html