According to the documentation, it’d be: – (void) setFoo:(NSObject *)inFoo { [self willChangeValueForKey:@”foo”]; [self setPrimitiveValue:inFoo forKey:@”foo”]; [self didChangeValueForKey:@”foo”]; } This is, of course, ignoring the fact that NSManagedObjects only want NSNumbers, NSDates, NSDatas, and NSStrings as attributes. However, this might not be the best approach. Since you want something to happen when the value of … Read more
Multiple reasons: If you allow field access like shape.x = 90 then you cannot add any logic in future to validate the data. say if x cannot be less than 100 you cannot do it, however if you had setters like public void setShapeValue(int shapeValue){ if(shapeValue < 100){ //do something here like throw exception. } … Read more
From my perspective as sitting with 4 million lines of C++ code (and that’s just one project) from a maintenance perspective I would say: It’s ok to not use getters/setters if members are immutable (i.e. const) or simple with no dependencies (like a point class with members X and Y). If member is private only … Read more
Neither. You should have methods that do things. If one of those things happens to correspond with a specific internal variable that’s great but there should be nothing that telegraphs this to the users of your class. Private data is private so you can replace the implementation whenever you wish (and can do full rebuilds … Read more
It’s common to put an additional @interface that defines a category containing private methods: Person.h: @interface Person { NSString *_name; } @property(readwrite, copy) NSString *name; -(NSString*)makeSmallTalkWith:(Person*)person; @end Person.m: @interface Person () //Not specifying a name for the category makes compiler checks that these methods are implemented. -(void)startThinkOfWhatToHaveForDinner; @end @implementation Person @synthesize name = _name; -(NSString*)makeSmallTalkWith:(Person*)person … Read more
The TypeScript specification (8.4.3) says… Accessors for the same member name must specify the same accessibility So you have to choose a suitable alternative. Here are two options for you: You can just not have a setter, which means only the Test class is able to set the property. You can place a breakpoint on … Read more
These setter and getter allow you to use the properties directly (without using the parenthesis) var emp = new Employee(“TruMan1”); if (emp.name) { // uses the get method in the background } emp.name = “New name”; // uses the setter in the background This is only to set and get the value of the property.
Tutorial is not really required for this. Read up on encapsulation private String myField; //”private” means access to this is restricted to the class. public String getMyField() { //include validation, logic, logging or whatever you like here return this.myField; } public void setMyField(String value) { //include more logic this.myField = value; }
Absolutely pointless – you’re better off without this kind of crap cluttering your code: /** * Sets the foo. * * @param foo the foo to set */ public void setFoo(float foo); Very useful, if warranted: /** * Foo is the adjustment factor used in the Bar-calculation. It has a default * value depending on … Read more
In addition to @millimoose’s answer, setters can also be used to update other values. function Name(first, last) { this.first = first; this.last = last; } Name.prototype = { get fullName() { return this.first + ” ” + this.last; }, set fullName(name) { var names = name.split(” “); this.first = names[0]; this.last = names[1]; } }; … Read more