Recent questions tagged Constructor

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constructor - Destructor in C# basic program does not work (output missing)

I have written the very basic program below, I am new to C#. The destructor ~Program() doesn't get called, so I ... ("Main ended"); } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Objective C two-phase construction of objects

I've been reading up on RAII and single vs. two-phase construction/initialization. For whatever reason, I ... design decision by the designers? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Is is possible to use std::map in C++ with a class without any copy operator?

I'm using a Class (Object) that doesn't have any copy operator : it basically cannot be copied right now. I have ... [0]; fails... Thanks :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Is is possible to use std::map in C++ with a class without any copy operator?

I'm using a Class (Object) that doesn't have any copy operator : it basically cannot be copied right now. I have ... [0]; fails... Thanks :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - JavaScript better way to modify function prototype

I wish to create a constructor of constructors. Relating to this thread : JavaScript build a constructor of constructors, it ... I wish to do ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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310 views

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constructor - JavaScript better way to modify function prototype

I wish to create a constructor of constructors. Relating to this thread : JavaScript build a constructor of constructors, it ... I wish to do ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Automatically setting class member variables in Python

Say, I have the following class in Python class Foo(object): a = None b = None c = None def __init__( ... I'm forced to modify the constructor. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Why is PHP private variables working on extended class?

Shouldn't it generate error when i try to set the value of a property from the extended class instead of a base ... sth','[email protected]'); ?> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Correct way to duplicate Delphi object

What are pros and cons of duplication an object instance with constructor or instance function? Example A: type ... obj); Send(newObj); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - How to write a simple class in C++?

I have been reading a lot of tutorials on C++ class but they miss something that other tutorials include ... simple constructor and destructor? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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541 views

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constructor - Why do C++ objects have a default destructor?

When I don't declare a constructor for example, the compiler will provide me with a default constructor that will ... created for us by default? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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444 views

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constructor - When do C++ POD types get zero-initialized?

Coming from a C background, I've always assumed the POD types (eg ints) were never automatically zero-initialized in C ... ... b is undefined } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - MVVM load data during or after ViewModel construction?

My generic question is as the title states, is it best to load data during ViewModel construction or afterward ... advance for your responses. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Javascript: Overwriting function's prototype - bad practice?

Since when we declare a function we get its prototype's constructor property point to the function itself, is it a ... as in the first example? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - How to construct JavaScript object (using 'apply')?

I'm looking for a way to construct arbitrary JavaScript objects based on (a) the name of the constructor, and (b) an ... ("+arglist+")").) /Jon See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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448 views

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constructor - C# How to execute code after object construction (postconstruction)

As you can see in the code below, the DoStuff() method is getting called before the Init() one during the construction ... () { // stuff } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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788 views

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constructor - Java "The blank final field may not have been initialized" Anonymous Interface vs Lambda Expression

I've recently been encountering the error message "The blank final field obj may not have been initialized". ... for any further explanations. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Java class "cannot be resolved to a type"

This is the error I'm getting: Exception in thread "main" java.lang.Error: Unresolved compilation problem: ... have been somewhat addressed. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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467 views

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constructor - C++ Object Instantiation vs Assignment

What is the difference between this: TestClass t; And this: TestClass t = TestClass(); I expected that the second ... once, just like the first. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Java static final field initialization order

I tried to understand the behavior of initialization order when static fields are initialized with a reference to the ... the declaration of a See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - Scala - initialization order of vals

I have this piece of code that loads Properties from a file: class Config { val properties: Properties = { val ... scenario in Scala? Thank you! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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484 views

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constructor - Clojure: creating new instance from String class name

In Clojure, given a class name as a string, I need to create a new instance of the class. In other ... scenario, I would be quite interested. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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721 views

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constructor - Is there a way to make a C++ struct value-initialize all POD member variables?

Suppose I have a C++ struct that has both POD and non-POD member variables: struct Struct { std::string ... their initialization in this case? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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531 views

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constructor - C++: Construction and initialization order guarantees

I have some doubts about construction and initialization order guarantees in C++. For instance, the following code has four ... Y | / | X V See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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constructor - How to force deletion of a python object?

I am curious about the details of __del__ in python, when and why it should be used and what it shouldn't ... what about if the __init__ raised? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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530 views

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constructor - does javascript's this object refer to newly created object in the way i think

So, when we create constructor function for creating new object the new keyword does 3 things I'am going to explain it ... . so am i right here. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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