getter-setter

问题 public class Hi { private final Map<String, String> map; public Map<String, String> getMap() { return map; } } I have this Hi class, and I want map to be immutable. I also need a getter. Currently, another class can modify the map from the getter. I would like to return a copy of the map to solve this problem, but Map is an interface, so does that mean I have to make the getter call: return new HashMap<String,String>(map); Is there another way to do it without forcing the map to be a hashmap?

问题 I am working on angular2 application in which my team member are using getter and setter to set input properties as follow private _showModal; @Input() set showModal(showModal){ this._showModal = showModal; } get showModal() { return this._showModal; } but I am not sure its a good way to do this. I thought one should use getter setter in the case where dev have to do some validation or check or do some other function while setting or getting value 回答1: Where we do the reading( get ) and

问题 I am working on angular2 application in which my team member are using getter and setter to set input properties as follow private _showModal; @Input() set showModal(showModal){ this._showModal = showModal; } get showModal() { return this._showModal; } but I am not sure its a good way to do this. I thought one should use getter setter in the case where dev have to do some validation or check or do some other function while setting or getting value 回答1: Where we do the reading( get ) and

问题 I am currently building a Doubly linked list implementation. What I am trying (or hoping) to do, is to use a setter / getter to set elements in the list, just like you would in an array: var index = 5; list[index] = node_x; However, I can't just use this syntax, because the nodes aren't technically properties of the list. Think of the list as 2 hooks. These 2 hooks are connected to 2 ends of a chain, but you can only access the those 2 connecting chain-links (And their siblings through them).

问题 My assignment is to create main class in which I initialize the value of any point to be at (0,0,0) and to be able to access and mutate all three values (x,y,z) individually. To do this I have used getters and setters. My next task is to create a method within my main class (which I shall call "distanceTo") that calculates the distance between two points. How do I go about creating the method " distanceTo " that calculates the distance between two points by taking in the x,y,z coordinates ? I

问题 My assignment is to create main class in which I initialize the value of any point to be at (0,0,0) and to be able to access and mutate all three values (x,y,z) individually. To do this I have used getters and setters. My next task is to create a method within my main class (which I shall call "distanceTo") that calculates the distance between two points. How do I go about creating the method " distanceTo " that calculates the distance between two points by taking in the x,y,z coordinates ? I

问题 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 . 回答1: The best style is the one that allows you and your team to make quality

问题 Should one use under any circumstances getters-setters of a class within the class? 回答1: Getters setters are generally used from outside class from inside directly access the fields. The main advantage/purpose is encapsulation of getter setters, If your getters setters has some logical code then use it. for example : public void setValue(int val){ if(val > 100) this.val = 0; else this.val = val; } Also see why-use-getters-and-setters More on getters and setters 回答2: Yes, getters and setters

问题 I want to override the setter and getter and find the class of an objc_property_t without doing it individually for each property. I get all the properties like so: unsigned int numberOfProperties; objc_property_t *propertyArray = class_copyPropertyList([self class], &numberOfProperties); for (NSUInteger i = 0; i < numberOfProperties; i++) { objc_property_t property = propertyArray[i]; NSString *name = [[NSString alloc] initWithUTF8String:property_getName(property)]; property.getter = SEL; //

问题 Asking about Object.defineProperty as demonstrated below: function testComponent(){ var testProperty; Object.defineProperty(this, "testProperty", { get : function() { return testProperty; }, set : function(val) { testProperty = val; } }); } Where it would be used like so: testObject = new testComponent(); testObject.testProperty = "testValue"; Based on what I've seen so far, it looks like there is no cross browser solution, as I've tried using es5-shim with no luck, but I would like to