getter-setter

问题 I have a Particle System Engine in my C++ project and the particles themselves are just structs of variables with no functions. Currently, each particle (Particle) is updated from its parent class (ParticleSystem) by having its variables accessed directly. E.g. particle.x += particle.vx; I am however, debating using getters and setters like this: particle.setX( particle.getX()+particle.getVX() ); My question is: Is there any performance overhead from calling getters and setters as opposed to

问题 one thing i've never really understood about AS3 is that you can't have a private set method and a public get method together. from within my class i would like to assign values that would call a private set function: myNumber = 22 ; but i need to pass that number as a parameter to a function myNumber(22); for example: package { //Imports import flash.display.Sprite //Class public class NumberClass extends Sprite { //Properties private var myNumberProperty:Number //Constructor public function

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 5 years ago . It is always recommended to use getter/setter for accessing private variables. Why would it not be a better idea to declare them as public and access them. Anyway we are accessing it using getter and setter? 回答1: @mre answer is excellent and your question is fundamental. To

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 5 years ago . It is always recommended to use getter/setter for accessing private variables. Why would it not be a better idea to declare them as public and access them. Anyway we are accessing it using getter and setter? 回答1: @mre answer is excellent and your question is fundamental. To

问题 How can you get IntelliJ to generate getter/setters on one line like this: public String getAbc() { return abc; } Instead of public String getAbc() { return abc; } ?? 回答1: There are no templates neither for getters nor for equals/hashcode. These are hardcoded in IDEA. Source You can see that in this IntelliJ Wishlist 回答2: I'm using IntelliJ IDEA 14.1.0 and you can customise this behaviour. Just use the "Generate..." option, or use Alt + Insert shortcut, and select "Getter and Setter". In the

问题 (Leaving aside the question of should you have them at all.) I have always preferred to just use function overloading to give you the same name for both getter and setters. int rate() { return _rate; } void rate(int value) { _rate = value; } // instead of int getRate() { return _rate; } void setRate(int value) { _rate = value; } // mainly because it allows me to write the much cleaner total( period() * rate() ); // instead of setTotal( getPeriod() * getRate() ); Naturally I am correct, but i

问题 Getters and setters are a beauty in VB.Net: Get Return width End Get Set(ByVal value As Integer) width = value End Set In Javascript, this is probably what we would do: function Test() { var width = 100; this.__defineGetter__("Width", function() { return width; }); this.__defineSetter__("Width", function(value){ width = value; }); } It looks like a plate of spaghetti ransacked by a kuri. What are some neater alternatives we have? Note: The new code should access the value using new Test()

问题 I'm wondering if there is any benefit to do this: <div>{{getSomething()}}</div> export class MyComp { getSomething() { return ...} } Over this: <div>{{getSomething}}</div> export class MyComp { get getSomething() { return ...} } Use methods vs getters to display calculated data. 回答1: I looked deeper into this and played with typescript Playground. I declared two classes one with getter and the second with get method as described in your questions. Lets see how it looks like: In the first

问题 Consider the following class definitions class of2010(object): def __init__(self): self._a = 1 self._b = 2 self._c = 3 def set_a(self,value): print('setting a...') self._a = value def set_b(self,value): print('setting b...') self._b = value def set_c(self,value): print('setting c...') self._c = value a = property(fset=self.set_a) b = property(fset=self.set_b) c = property(fset=self.set_c) note that set_[a|b|c]() do the same thing. is there a way do define: def set_magic(self,value): print(

问题 public: inline int GetValue() const { return m_nValue; } inline void SetValue(int nNewValue) { this -> m_nValue = nNewValue; } On Learn C++ , they said it would run faster. So, I thought it would be great to use on getters and setters. But maybe, there are some drawbacks to it? 回答1: I don't inline anything until a profiler has specifically told me that not inlining is resulting in a performance problem. The C++ compiler is very smart and will almost certainly automatically inline such simple