getter-setter | 易学教程

Eclipse generate getters and setters and automatically apply them

阅读更多关于 Eclipse generate getters and setters and automatically apply them

问题 In my Java code I directly accessed some member variables. Now I want to refactor and use getter and setters. How can I make Eclipse automatically replace all direct assignments with setters and each access with a getter? Right click -> Source -> Generate Getters and Setters just creates the functions but does not apply them in the rest of the code. 回答1: Use the Refactor menu. It has an item "encapsulate fields" which generates getters and setters just as "Source -> Generate Getters and

Ruby/Rails: Understanding ruby getter-setter methods and instances

阅读更多关于 Ruby/Rails: Understanding ruby getter-setter methods and instances

问题 I am new to ruby and programming in general and am trying to grasp a few key concepts. Given I have a class Dog, with the below characteristics. class Dog attr_accessor :type, :popularity, :total def initialize(type = nil) @type = type end def total_dogs Dog.count end def total Dog.where(:type => self.type).size end def popularity total.to_f/total_dogs end end What I am trying to understand, is how ruby persists attributes to an instance via getter/setter methods. Its clear to me that if I

How do I return from a getter of an asynchronous property?

阅读更多关于 How do I return from a getter of an asynchronous property?

问题 I have over-ridden a getter that requests an online service to get a result. How do I force the getter to return the result only from synchronous block ? @interface MyClass () @property (nonatomic, strong) NSMutableDictionary* myDictionary; @end @implementation MyClass -(NSMutableDictionary*) myDictionary { dispatch_async(queue, ^{ /* perform online request */ dispatch_sync(dispatch_get_main_queue(), ^{ // I need to obtain lock until this line gets executed and only then return }); }); } @end

Java conventions for accessible data. (Public accessors & Getters/Naming)

阅读更多关于 Java conventions for accessible data. (Public accessors & Getters/Naming)

问题 Through the Java API you see numerous occurrences of conflicting naming and practices which are really confusing to me. For example: The String class has a private variable (Integer) by the name of count which keeps track of the size of the string, however this is returned by a getter by the name of length() . If you move over to any type of arrays, instead of having a getter method for length, they just pass the variable through with a public accessor, and it can be obtained through

getter/setter generation with multiline stringfy macro

阅读更多关于 getter/setter generation with multiline stringfy macro

问题 I have recently seen a cool c style macro play which generates automatically the setters/getters for the class. So this is what I am talking about. #define BOOL_VARIABLE(name)\ void set##name(bool iValue)\ {\ // set the boolean }\ const bool get##name() const\ {\ // get the boolean } BOOL_VARIABLE(AVariableName); // and calling them inside the class and now think about one of them for all string/int/double etc variables I am aware of all avoid-macro usage type of remarks but I actually find

Benefits of using Setter and Getter methods vs. direct manipulation

阅读更多关于 Benefits of using Setter and Getter methods vs. direct manipulation

问题 Sorry if this a beginner question but I was wondering what the benefits are to using setter and getter methods rather than directly manipulating them directly. I'm in obj-c and I'm wondering if there is any benefits in terms of memory/cpu usage. For instance, I'm cropping an image before I upload it and I crop it after it is taken/picked. I put all my code in the didFinishPickingMediaWithInfo method. So it would look like the following: -(void)imagePickerController:(UIImagePickerController *

Ruby/Rails: Understanding ruby getter-setter methods and instances

阅读更多关于 Ruby/Rails: Understanding ruby getter-setter methods and instances

I am new to ruby and programming in general and am trying to grasp a few key concepts. Given I have a class Dog, with the below characteristics. class Dog attr_accessor :type, :popularity, :total def initialize(type = nil) @type = type end def total_dogs Dog.count end def total Dog.where(:type => self.type).size end def popularity total.to_f/total_dogs end end What I am trying to understand, is how ruby persists attributes to an instance via getter/setter methods. Its clear to me that if I instantiate a new instance and then save attributes to that instance, those attributes are tied to that

Clarication needed for implementing properties with the revealing module pattern using Html5 getters and setters

阅读更多关于 Clarication needed for implementing properties with the revealing module pattern using Html5 getters and setters

问题 I've searched a lot for how to do properties in Javascript. Most all of the revealing module pattern I've seen has exclusively exposed functions, and from experience I know if I expose an object, I'm only really getting a copy of the value right there and then, thus simply I could have a function getMyThing() and setMyThing and expose that. However I'm wanting to expose real properties I've seen the oldschool defineGetter which I'm avoiding and the newer Object.defineProperty( which I had

Doctrine 2 ORM creates classes with hateful CamelCase

阅读更多关于 Doctrine 2 ORM creates classes with hateful CamelCase

问题 I created yaml configuration for Doctrine. When I'm trying doctrine orm:generate-entities , it creates php files with getters and setters in camel case. So, is_public field transforms into setIsPublic and getIsPublic methods. It's owful. How can I get set_is_public and get_is_public ? I can manually edit generated php files, but I don't know what will happen when I change the schema. 回答1: You can choose a naming strategy that Doctrine will use to generate the items using: Using a naming

Flex: Help me understand data Binding on getters and setters

阅读更多关于 Flex: Help me understand data Binding on getters and setters

问题 Help me understand data Binding When I create a variable in a class: [Bindable] private var _name:String; and then generate getters and setters, I get: private var _name:String; [Bindable] public function get name():String { return _name; } public function set name(value:String):void { _name = value; } Why does it generate the tag '[Bindable]' only on the get function? To me, it would seem that it should be on the set function, as I would want to know when the value changes, not when the