foreach is a read only iterator that iterates dynamically classes that implement IEnumerable, each cycle in foreach will call the IEnumerable to get the next item, the item you have is a read only reference, you can not re-assign it, but simply calling item.Value is accessing it and assigning some value to a read/write attribute … Read more
Properties don’t need backing variables (fields) at all. While they can be used for encapsulating simple fields you can also use them to access other data. public Decimal GrandTotal { get { return FreightTotal + TaxTotal + LineTotal; } } or public string SomeStatus { get { return SomeMethodCall(); } } If the goal is … Read more
self.attribute calls the method attribute. self.attribute = value calls the method attribute= with the argument value. @attribute and @attribute = value get/set the value of the instance variable @attribute. So basically they’re two entirely different things. However if you call attr_accessor :attribute it defines the method attribute to return @attribute and the method attribute=(value) to … 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
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
The getting and setting of variables within classes refers to either retrieving (“getting”) or altering (“setting”) their contents. Consider a variable members of a class family. Naturally, this variable would need to be an integer, since a family can never consist of two point something people. So you would probably go ahead by defining the … Read more
You can specify the property on the interface, but you can’t enforce whether getters and setters are used, like this: interface IExample { Name: string; } class Example implements IExample { private _name: string = “Bob”; public get Name() { return this._name; } public set Name(value) { this._name = value; } } var example = … Read more
Here is a small trick that I use in JAVA to replicate C++ friend mechanism. Lets say I have a class Romeo and another class Juliet. They are in different packages (family) for hatred reasons. Romeo wants to cuddle Juliet and Juliet wants to only let Romeo cuddle her. In C++, Juliet would declare Romeo … Read more
There is also the point of view that most of the time, using setters still breaks encapsulation by allowing you to set values that are meaningless. As a very obvious example, if you have a score counter on the game that only ever goes up, instead of // Game private int score; public void setScore(int … Read more