Recent questions tagged oop

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oop - Python 3 : Sharing variables between methods in a class

Looking for how to make a variable set by one Method/function in a class accessible to another method/function ... .test print(new_val) pass See Question&Answers more detail:os...

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

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859 views

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oop - C++ Singleton class - inheritance good practice

In an existing project, I am to inherit a Controller class (MVC) declared as Singleton so as to define ... own redefined treatment. 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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796 views

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oop - PHP protected classes and properties, protected from whom?

I'm just getting started with OOP PHP with PHP Object-Oriented Solutions by David Powers, and am a ... beginner's understanding of programming. See Question&Answers more detail:os...

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

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849 views

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oop - When would you use the $this keyword in PHP?

When would you use the $this keyword in PHP? From what I understand $this refers to the object created without ... when you can use $this. See Question&Answers more detail:os...

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

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800 views

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oop - PHP MVC: Data Mapper pattern: class design

I have a web MVC application with domain objects and data mappers. The class methods of the data mappers contain ... for your time and patience. See Question&Answers more detail:os...

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

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905 views

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oop - Overcoming Python's limitations regarding instance methods

It seems that Python has some limitations regarding instance methods. Instance methods can't be copied. Instance ... method of some object. See Question&Answers more detail:os...

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

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780 views

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oop - Why is it possible to have an interface without a return type in PHP?

Why is it possible to create an interface without specifying a return type? Why doesn't this make this interface ... a return type like Integer? See Question&Answers more detail:os...

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

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914 views

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oop - Java, Cannot reduce the visibility of the inherited method from object

Continuing from this question: Why can't you reduce the visibility of a method in a Java subclass? I need to ... practice to work around this? See Question&Answers more detail:os...

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

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851 views

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oop - Why is it possible to have an interface without a return type in PHP?

Why is it possible to create an interface without specifying a return type? Why doesn't this make this interface ... a return type like Integer? See Question&Answers more detail:os...

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

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oop - Java, Cannot reduce the visibility of the inherited method from object

Continuing from this question: Why can't you reduce the visibility of a method in a Java subclass? I need to ... practice to work around this? See Question&Answers more detail:os...

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

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742 views

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oop - Is there a special object initializer construct in PHP like there is now in C#?

I know that in C# you can nowadays do: var a = new MyObject { Property1 = 1, Property2 = 2 }; Is ... nothing more than a bunch of properties. See Question&Answers more detail:os...

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

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815 views

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oop - What's the deal with Java's public fields?

I've been reading two articles (1)(2) on javaworld.com about how all class fields should be private and getter/ ... I've learned. Have I sinned? See Question&Answers more detail:os...

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

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866 views

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oop - Derived classes in C - What is your favorite method?

In my experience in object oriented C programming I have seen two ways to implement derived classes. First Method, have a ... ( or your own )? See Question&Answers more detail:os...

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

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oop - difference between association and aggregation

I understand the difference between aggregation and composition but I am struggling a bit with association. My ... be very much appreciated. See Question&Answers more detail:os...

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

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983 views

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oop - Python: How to call an instance method from a class method of the same class

I have a class as follows: class MyClass(object): int = None def __init__(self, *args, **kwargs): for k ... any way to accomplish so? 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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879 views

1 answer

oop - Object Variables vs Class Variables in Java

I am in the process of learning Java and I don't understand the difference between Object Variables and Class ... the static statement. 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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884 views

1 answer

oop - Something like a callback delegate function in php

I would like to implement something similar to a c# delegate method in PHP. A quick word to explain what I' ... doing this that anyone knows of? See Question&Answers more detail:os...

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

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996 views

1 answer

oop - Java - Initialize a HashMap of HashMaps

I am new to java and practicing by creating a simplistic NaiveBayes classifier. I am still new to object ... I would provide some context. See Question&Answers more detail:os...

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

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1.1k views

1 answer

oop - PHP get_called_class() alternative

I've got an Abstract PHP superclass, which contains code that needs to know which subclass its running under. ... subclass has overridden it. See Question&Answers more detail:os...

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

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1.0k views

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oop - Subclass `pathlib.Path` fails

I would like to enhance the class pathlib.Path but the simple example above dose not work. from pathlib import Path ... What I am doing wrong ? See Question&Answers more detail:os...

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

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1.1k views

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oop - Dynamically Create Instance Method in PHP

I'd like to be able to dynamically create an instance method within a class' constructor like so: class Foo ... . Any help is appreciated. See Question&Answers more detail:os...

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

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836 views

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oop - Difference between Object and instance : C++

I followed a number of posts on SO, and finally I can draw a conclusion that when we have something like : Person ... can be ignored in C++? See Question&Answers more detail:os...

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

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780 views

1 answer

oop - Is this a reasonable way to handle getters/setters in a PHP class?

I'm going to try something with the format of this question and I'm very open to suggestions about a better ... it sacrifices too much clarity. See Question&Answers more detail:os...

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

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897 views

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oop - php destructor behaviour

im trying to understand php constructor and destructor behaviour. Everything goes as expected with the constructor but ... to fire implicitly? See Question&Answers more detail:os...

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

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974 views

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oop - C++ difference between reference, objects and pointers

This is a question from an exam in an advanced course in OOP, taught in C++ (in TAU university, this ... still, I believe this is incorrect. See Question&Answers more detail:os...

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

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893 views

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oop - What is the preferred way of constructing objects in C#? Constructor parameters or properties?

I was wondering, what is the preferred way to construct a new object in C#? Take a Person class: public class ... . Am I right in that? See Question&Answers more detail:os...

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

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909 views

1 answer

oop - C# interface method ambiguity

Consider the following example: interface IBase1 { int Percentage { get; set; } } interface IBase2 { int ... Is this a valid solution? See Question&Answers more detail:os...

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

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1.0k views

1 answer

oop - How to get leaf nodes of a tree using Python?

Hi there I am new to OOP so have this in mind while you are reading this. I have a simple Python ... function that called the get_leaf_nodes(). See Question&Answers more detail:os...

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

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