getter

Python overriding getter without setter

由 限于喜欢 提交于 2019-11-26 09:46:07
问题 class human(object): def __init__(self, name=\'\'): self.name = name @property def name(self): return self._name @name.setter def name(self, value): self._name = value class superhuman(human): @property def name(self): return \'super \' + name s = superhuman(\'john\') print s.name # Doesn\'t work :( \"AttributeError: can\'t set attribute\" s.name = \'jack\' print s.name I want to be able to override the property but be able to use the super parent\'s setter without having to override the

JavaScript getter for all properties

由 两盒软妹~` 提交于 2019-11-26 07:50:54
Long story short: I'm in a situation where I'd like a PHP-style getter, but in JavaScript. My JavaScript is running in Firefox only, so Mozilla specific JS is OK by me. The only way I can find to make a JS getter requires specifying its name, but I'd like to define a getter for all possible names. I'm not sure if this is possible, but I'd very much like to know. Proxy can do it! I'm so happy this exists!! An answer is given here: Is there a javascript equivalent of python's __getattr__ method? . To rephrase in my own words: var x = new Proxy({},{get(target,name) { return "Its hilarious you

Public Data members vs Getters, Setters

由 拟墨画扇 提交于 2019-11-26 05:58:27
问题 I am currently working in Qt and so C++. I am having classes that has private data members and public member functions. I have public getters and setters for the data members available in the class. Now my question is, if we have getters and setters for data members in our classes then what\'s the point in making those data members as private? I agree having private data members in Base classes sounds logical. But besides that, having private members and so do their getters and setters doesn\

How to define setter/getter on prototype

由 家住魔仙堡 提交于 2019-11-26 05:56:04
问题 EDIT Oct 2016 : Please note this question was asked in 2012. Every month or so someone adds a new answer or comment that refutes an answer, but doesn\'t really make sense to do so as the question is probably out of date (remember, it was for Gnome Javascript to write gnome-shell extensions, not browser stuff, which is quite specific). Following my previous question on how to do subclassing in Javascript, I\'m making a subclass of a superclass like so: function inherits(Child,Parent) { var Tmp

Set and Get Methods in java?

由 柔情痞子 提交于 2019-11-26 05:25:34
问题 How can I use the set and get methods, and why should I use them? Are they really helpful? And also can you give me examples of set and get methods? 回答1: Set and Get methods are a pattern of data encapsulation. Instead of accessing class member variables directly, you define get methods to access these variables, and set methods to modify them. By encapsulating them in this manner, you have control over the public interface, should you need to change the inner workings of the class in the

In Objective-C on iOS, what is the (style) difference between “self.foo” and “foo” when using synthesized getters?

由 笑着哭i 提交于 2019-11-26 03:43:42
问题 I have searched many questions on ObjC accessors and synthesized accessors to no avail. This question is more of a \"help me settle an issue\" question; I don\'t expect one answer, but I\'m rather looking for experts to weigh in on the argument. In a Cocoa Touch class, I would write some code like this (where soundEffects is a synthesized NSArray property): id foo = [self.soundEffects objectAtIndex:1]; A colleague asked me to explain why the above is any better than this line: id foo =

Difference between @interface definition in .h and .m file

由 浪尽此生 提交于 2019-11-26 03:37:50
问题 Normally we use @interface interface_name : parent_class <delegates> { ...... } @end method in .h file and in .m file we synthesis the properties of variables declared in .h file. But in some code, this @interface.....@end method is kept in the .m file also. What does it mean? What is the difference between them? Also give some words about getters and setters for the interface file that is defined in .m file... Thanks in Advance 回答1: It's common to put an additional @interface that defines a

JavaScript getter for all properties

由 狂风中的少年 提交于 2019-11-26 01:58:39
问题 Long story short: I\'m in a situation where I\'d like a PHP-style getter, but in JavaScript. My JavaScript is running in Firefox only, so Mozilla specific JS is OK by me. The only way I can find to make a JS getter requires specifying its name, but I\'d like to define a getter for all possible names. I\'m not sure if this is possible, but I\'d very much like to know. 回答1: Proxy can do it! I'm so happy this exists!! An answer is given here: Is there a javascript equivalent of python's _

Why use getters and setters/accessors?

由 ╄→尐↘猪︶ㄣ 提交于 2019-11-25 22:52:01
问题 What\'s the advantage of using getters and setters - that only get and set - instead of simply using public fields for those variables? If getters and setters are ever doing more than just the simple get/set, I can figure this one out very quickly, but I\'m not 100% clear on how: public String foo; is any worse than: private String foo; public void setFoo(String foo) { this.foo = foo; } public String getFoo() { return foo; } Whereas the former takes a lot less boilerplate code. 回答1: There are

Getters \ setters for dummies

由 非 Y 不嫁゛ 提交于 2019-11-25 22:43:28
问题 I\'ve been trying to get my head around getters and setters and its not sinking in. I\'ve read JavaScript Getters and Setters and Defining Getters and Setters and just not getting it. Can someone clearly state: What a getter and setter are meant to do, and Give some VERY simple examples? 回答1: In addition to @millimoose's answer, setters can also be used to update other values. function Name(first, last) { this.first = first; this.last = last; } Name.prototype = { get fullName() { return this
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