getter-setter

I've read a few articles/posts regarding the use of Getters and Setters, and how they help to defeat the purpose of encapsulation in domain model objects. I understand the logic behind not using setters - you are allowing client code to manipulate attributes of that object, outside the context of the object business rules and invariants. Now this principal does still confuse me. For example, what happens if I need to change the value of a member variable of an object? For example, if the name of a person changes how can I reflect this in the model? At first I thought, well why not have a

In this code: function Cls() { this._id = 0; Object.defineProperty(this, 'id', { get: function() { return this._id; }, set: function(id) { this._id = id; }, enumerable: true }); }; var obj = new Cls(); obj.id = 123; console.log(obj); console.log(obj.id); I would like to get { _id: 123, id: 123 } but instead I get { _id: 123, id: [Getter/Setter] } Is there a way to have the getter value be used by the console.log function? You can use console.log(Object.assign({}, obj)); jib Use console.log(JSON.stringify(obj)); You can define an inspect method on your object, and export the properties you are

Please point where a bug in my code. class Foo: def get(self): return self.a def set(self, a): self.a = a Foo.set(10) Foo.get() TypeError: set() takes exactly 2 positional arguments (1 given) How to use __get__() / __set__() ? They are instance methods. You have to create an instance of Foo first: f = Foo() f.set(10) f.get() # Returns 10 How to use __get__()/__set__() ? Like this if you have Python3. Descriptors in Python2.6 doesn't want works properly for me. Python v2.6.6 >>> class Foo(object): ... def __get__(*args): print 'get' ... def __set__(*args): print 'set' ... >>> class Bar: ...

in Java code convention is simple and obvious, in this style: public: int GetMyAge(){ return myAge; } void SetMyAge(int myAge){ this->myAge = myAge; } private: int myAge; (I know it's "again the same thing", but ) I have read most of related questions on SO and I still don't know "the best one" and "the most official" way to do it in C++. It can't be just a matter of preferences, can it ? EDIT: Seems like it can . The best style is the one that allows you and your team to make quality software that your clients continue to pay you for. How does this style work for you and your team? Do you

Unless I am thoroughly mistaken, the getter/setter pattern is a common pattern used for two things: To make a private variable so that it can be used, but never modified, by only providing a getVariable method (or, more rarely, only modifiable, by only providing a setVariable method). To make sure that, in the future, if you happen to have a problem to which a good solution would be simply to treat the variable before it goes in and/or out of the class, you can treat the variable by using an actual implementation on the getter and setter methods instead of simply returning or setting the

I am attempting to create a service to parse data to different components on different routes. If I call the follow service on the same component I get the result I require, but if I try to get the set results from another component the service returns undefined. Here is my service:- import {Injectable} from '@angular/core'; @Injectable() export class TestService { public _test:any; set test(value:any) { this._test = value } get test():any { return this._test; } } I set the service like:- this.testService.test = 3; and I receive the the service data in my component using the following:-

Summary Code sample: Class People { // private property. private $name; // other methods not shown for simplicity. } Straight forward. Let me assume that $name is a PRIVATE class member (or property, variable, field, call it as you wish) . Is there any way to do these in PHP: $someone = new People(); $someone->name = $value; $somevar = $someone->name; WITHOUT using __get($name) and __set($name, $value) . Background I needed to check the assigned $value , therefore I simply need a getter setter like this: getName(); setName($value); And NOT necessarily a getter setter magic method overloading