getter-setter

问题 In the following code, both uses of console.log(o.x) print 1 . What happens to the assignment o.x = 2 ? Is it just ignored? var o = { get x() { return 1; } } console.log(o.x); // 1 o.x = 2 console.log(o.x); // 1 回答1: In sloppy mode, yes, it'll just be ignored - the value "assigned" will be discarded. But in strict mode (which is recommended), the following error will be thrown: Uncaught TypeError: Cannot set property x of #<Object> which has only a getter 'use strict'; var o = { get x() {

问题 Model name: listing ; Field name: contact_name . User input involved, so I want to format the output, consistently, with some variant of getContactName , i.e. any call to $model->contact_name returns the formatted output. Yes, I can use, for example, getContactName and $model->contactName , but I have not found any variant of getcontact_name that will work with the default $model->contact_name . I'm aware that I could configure Gii to create some additional functions, and various other

问题 I'm trying to stringify objects in Typescript that was implemented usign private properties like this export class Foo { private _property1:string; private _property2:string; private _property3:string; get property1(): string { return this._property1; } set property1(value: string) { this._property1 = value; } get property2(): string { return this._property2; } set property2(value: string) { this._property2 = value; } get property3(): string { return this._property3; } set property3(value:

问题 I was trying this ... public class Info { private static Info ourInstance = new Info(); public static Info getInstance() { return ourInstance; } private static int currentIndex; public static void setCurrentIndex(int i) { Log.d("DEV", "setter!"); currentIndex = i; // do other work here } public static int getCurrentIndex() { Log.d("DEV", "getter!"); return currentIndex; } private Info() { Log.d("DEV", "class initialized no problem..."); currentIndex = 42; // just doesn't work, only sets the

问题 This question already has answers here : Closed 9 years ago . Possible Duplicates: Public Data members vs Getters, Setters Purpose of private members in a class What is the use of getters and setters when you can just make your variables public and avoid the hassle of such lines as A.setVariableX(A.getVariableY()) ? 回答1: To hide implementation details. If you choose to make your properties public instead, then later decide to change the way they work, you have to change all of the associated

问题 Can somebody please tell me about getters and setters in javascript? What are actually getters and setters? Where we can use them? What are the benefits of using them? 回答1: Generally, getters and setters are used for Object Oriented Programming in Javascript. Typically, in a class, there are some attributes, a constructor, getters and setters. Attributes represent properties of a class Constructor creates an instance of a class Getters help to retrieve the attributes of an object var name =

问题 Can somebody please tell me about getters and setters in javascript? What are actually getters and setters? Where we can use them? What are the benefits of using them? 回答1: Generally, getters and setters are used for Object Oriented Programming in Javascript. Typically, in a class, there are some attributes, a constructor, getters and setters. Attributes represent properties of a class Constructor creates an instance of a class Getters help to retrieve the attributes of an object var name =

问题 I'm using Enterprise Architect to make a UML class diagram and generate PHP5 code with it. Using this, one can make getters and setters for an attribute, which looks like this in the code (only relevant lines shown): private $id; public function getId() { return $this->id; } /** * * @param newVal */ public function setId($newVal) { $this->id = $newVal; } I'd like to use the magic methods __get($property) and __set($property, $value) instead of seperate methods for each property. Is it

问题 Intro I am working on an open source project Treez where I organize so called "Atoms" in a tree view. Those Atoms sometimes have a lot of attributes and those attributes are modified either through user actions in a tree view or through an API in an Eclipse code editor. The attributes of my Atoms themselves are represented by reusable "AttributeAtoms" . Those hold the actual attribute value and provide additional functionality like validation (other possible terms for "Atom" might be "widget"

问题 Intro I am working on an open source project Treez where I organize so called "Atoms" in a tree view. Those Atoms sometimes have a lot of attributes and those attributes are modified either through user actions in a tree view or through an API in an Eclipse code editor. The attributes of my Atoms themselves are represented by reusable "AttributeAtoms" . Those hold the actual attribute value and provide additional functionality like validation (other possible terms for "Atom" might be "widget"