setter

Does Binding work ONLY with DependencyProperty?

放肆的年华 提交于 2021-02-06 10:39:07
问题 MSDN says, Each binding typically has these four components: a binding target object, a target property, a binding source, and a Path to the value in the binding source to use. For example, if you want to bind the content of a TextBox to the Name property of an Employee object, your target object is the TextBox, the target property is the Text property , the value to use is Name, and the source object is the Employee object. The target property must be a dependency property. The above excerpt

Pythonic alternative to dict-style setter?

♀尐吖头ヾ 提交于 2021-01-28 05:06:15
问题 People tend to consider getters and setters un-Pythonic, prefering to use @property instead. I'm currently trying to extend the functionality of a class that uses @property to support a dict: class OldMyClass(object): @property def foo(self): return self._foo @foo.setter def foo(self, value): self.side_effect(value) self._foo = value class NewMyClass(object): @property def foo(self, key): # Invalid Python return self._foo[key] @foo.setter def foo(self, key, value): # Invalid Python self.side

What is the simplest way to define setter and getter in Python

不羁的心 提交于 2021-01-27 05:01:52
问题 What is the simplest way to define setter and getter in Python? Is there anything like in C# public int Prop {get; set;} How to make it like this? Since to write both setter and getter methods for one property like this is just too much work. class MyClass(): def foo_get(self): return self._foo def foo_set(self, val): self._foo = val foo = property(foo_get, foo_set) Thanks in advance! 回答1: If the setter and getter do nothing else than accessing an underlying real attribute, then the simplest

How to manage access to a mutable attribute in Python

痞子三分冷 提交于 2021-01-20 08:19:01
问题 In Python, we can use the @property decorator to manage access to attributes. For example, if we define the class: class C: def __init__(self,value): self._x = value @property def x(self): """I'm the 'x' property.""" return self._x we can get the value of x, but not change it: c = C(1) #c.x = 4 # <= this would raise an AttributeError: can't set attribute However, if the attribute is of a mutable type (e.g., a list), we can set a different value for a position of the attribute: c = C([0,0]) c

Setter Getter Arrays Java

帅比萌擦擦* 提交于 2020-07-07 23:29:17
问题 Can somebody help me with one little problem. I want to set for example 3 lectures to 1 student, but when i try this i can't set lectures. student.setStudentLecture(lecture); student.setStudentLecture(lecture1); public class Student { private Lecture[] lecture; public void setStudentLecture(Lecture[] lecture) { this.lecture = lecture; } public Lecture[] getStudentLecture() { return lecture; } } 回答1: You are using Array of Lecture objects and overwriting the same array with two different array

How to pass values using setter and getter among three classes

落花浮王杯 提交于 2020-06-26 06:39:07
问题 I've been practicing a project which is the classical Nim game. What I've achieved now is: Add, remove, edit, display, players. (Nimsys and NimPlayer) Selecting two players to play a game. (NimGame class) Every time when the game ends, I need to return these two things from NimGame to NimPlayer. Then I can use getter in Nimsys: If the player wins, his/her score +1. Every time after a game, the number of game +1 for the player who played. What I've already tried was to pass the "score" and

Re-bind onclick, on* event listeners for debugging

☆樱花仙子☆ 提交于 2020-06-23 08:13:26
问题 I want to monkeypatch event listener registrations. I found this answer showing how to do it for addEventListener : const nativeEventListener = EventTarget.prototype.addEventListener; EventTarget.prototype.addEventListener = function(...args) { if (this.matches('div') && args[0] === 'click') { console.log('listener is being added to a div'); debugger; } nativeEventListener.apply(this, args); } // then, when an event listener is added, you'll be able to intercept the call and debug it: