getter-setter

问题 Is there a way to generate getters and setters in Visual Studio? I'm trying with Alt + R , F and i get this: public String Denomination { get { return denomination; } set { denomination = value; } } and what I want is this: public String getDenomination() { return Denomination; } public void setDenomination(String Denomination) { this.Denomination = Denomination; } is there a way to do that? 回答1: You can use the prop code snippet to create automatic properties. Type prop , and press Tab . You

问题 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:-

问题 I thougt it would be fun to rewrite my zero padding extension to the Number.prototype into a genuine getter/setter pattern. Not very difficult. I ended up with this code ( addSetter and addGetter are just wrapper functions using prototype.__defineGetter__ / __defineSetter__ . Number.addSetter('leftPad0', function(v){ var len = (String(v).length - String(this).length)+1; this._leftPad0 = new Array(len).join('0')+this; } ); Number.addGetter('leftPad0', function(){ return this._leftPad0; } );

问题 Is it possible to check if a property exists which are set using magic setter? class Test { private $vars; public function __set($key, $value) { $this->vars[$key] = $value; } public function &__get($key) { return $this->vars[$key]; } } $test = new Test; $test->myvar = 'yay!'; if (magic_isset($test->myvar)) { } Or isn't it possible and I just need to setup another function in my class? 回答1: Use __isset() and isset(): public function __isset($key) { return isset($this->vars[$key]); } $test =

问题 Examining Zend Framework, I found that all setter methods (of those I’ve examined) return the instance of the class it lives in. It doesn't only set a value but also returns $this . For example: /* Zend_Controller_Router */ public function setGlobalParam($name, $value) { $this->_globalParams[$name] = $value; return $this; } /* Zend_Controller_Request */ public function setBaseUrl($baseUrl = null) { // ... some code here ... $this->_baseUrl = rtrim($baseUrl, '/'); return $this; } /* Zend

问题 I just tested attr_accessor against equivalent getter/setter-methods: class A # we define two R/W attributes with accessors attr_accessor :acc, :bcc # we define two attributes with getter/setter-functions def dirA=(d); @dirA=d; end def dirA; @dirA; end def dirB=(d); @dirB=d; end def dirB; @dirB; end end varA = A.new startT = 0 dirT = 0 accT = 0 # now we do 100 times the same benchmarking # where we do the same assignment operation # 50000 times 100.times do startT = Time.now.to_f 50000.times

问题 This question already has answers here : Why use getters and setters/accessors? (38 answers) What is the point of setters and getters in java? [duplicate] (14 answers) Closed 5 years ago . If I can change the value of private variable through getter-returned reference then isn't it bypassing the setter method? Doesn't it defeat the purpose of getter-setter and private variables public class Test{ private Dimension cannotBeChanged; public Test(int height, int width) { if(height!=3)

问题 How do you define a getter and setter for complex data types such as a dictionary? public Dictionary<string, string> Users { get { return m_Users; } set { m_Users = value; } } This returns the entire dictionary? Can you write the setter to look and see if a specific key-value pair exists and then if it doesn't, add it. Else update the current key value pair? For the get, can you return a specific key-value pair instead of the whole dictionary? 回答1: It is not possible to do it in a way that

问题 I remember reading that in Doctrine 2 models, I should not set properties/fields public. How then would you expose these fields? The sandbox used get*() & set*() methods. Is that the best idea? Its very cumbersome. Using magic methods __get() __set() will make things similar to setting fields public? Whats your recommendation? 回答1: Here's why you can't use public properties: How can public fields “break lazy loading” in Doctrine 2? You are correct that __get() and __set() can make accessing

问题 I recently read about the fact that there is a possibility of defining getters/setters in JavaScript. It seems extremely helpful - the setter is a kind of 'helper' which can parse the value to be set first, before actually setting it. For example, I currently have this code: var obj = function(value) { var test = !!value; // 'test' has to be a boolean return { get test() { return test }, set test(value) { test = !!value } }; }; var instance = new obj(true); This code always converts value to