Recent questions tagged oop

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655 views

1 answer

oop - How to access one object from another form in C#?

Let's say I have "Form1" and "Form2", both are forms. In Form1 there are the Main Class and the Main method. In ... ob1 !!! } Any help ? Thanks. See Question&Answers more detail:os...

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

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637 views

1 answer

oop - Property and Encapsulation

Following is a question regarding using properties in class. I have been using public properties instead of ... how it improves encapsulation? See Question&Answers more detail:os...

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

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769 views

1 answer

oop - Swift: How can I make a function with a Subclass return type conform to a protocol, where a Superclass is defined as a return type?

I have a protocol, where a function is defined, the return type of a function is a SuperclassType. In a class ... am I doing wrong? Thanks. See Question&Answers more detail:os...

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

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624 views

1 answer

oop - Inheritance vs Static in Java

I dont quite understand why Static methods can be inherited in Java ? Inheritance is like inheriting from the ... a good programming practise ? 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

1 answer

oop - Find all classes in a Javascript application that extend a base class

I have code like this class Animal{} class Dog extends Animal {} class Cat extends Animal {} class Donkey ... classes or call them explicitly. See Question&Answers more detail:os...

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

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710 views

1 answer

oop - VBA: how to test for object equality (whether two variables reference the same object)

What is the operator or function to test whether two variables of the same custom object type refer to the same ... they are the same object. See Question&Answers more detail:os...

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

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628 views

1 answer

oop - What is a driver class? (Java)

I was reading through a Java textbook, and it mentions something called a "driver class". What is it, and ... it different from a normal class? See Question&Answers more detail:os...

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

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739 views

1 answer

oop - Ensuring embedded structs implement interface without introducing ambiguity

I'm trying to clean up my code base by doing a better job defining interfaces and using embedded structs to ... compile time instead of runtime? See Question&Answers more detail:os...

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

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706 views

1 answer

oop - Java, call object methods through arraylist

Based on this question Increment variable names? I have an arraylist 'peopleHolder' which holds various 'person' ... store the objects value. See Question&Answers more detail:os...

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

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752 views

1 answer

oop - Abstract methods in Python

I need something like an abstract protected method in Python (3.2): class Abstract: def use_concrete_implementation( ... (abc) improve anything? See Question&Answers more detail:os...

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

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822 views

1 answer

oop - Why does PHP allow "incompatible" constructors?

Here's a couple of snippets: Overriding constructor method has an extra parameter. class Cat { function ... towards constructor methods? See Question&Answers more detail:os...

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

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717 views

1 answer

oop - How pointers to function as struct member useful in C?

I am not new to C programming. But I don't understand what is usefulness to keep pointer to function as a ... help to explain the the reason. See Question&Answers more detail:os...

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

0 votes

820 views

1 answer

oop - How can I prevent a base constructor from being called by an inheritor in C#?

I've got a (poorly written) base class that I want to wrap in a proxy object. The base class resembles ... effectively proxy this (evil) class. See Question&Answers more detail:os...

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

0 votes

610 views

1 answer

oop - Why is multiple inheritance not supported in most of programming language?

Why is multiple inheritance not supported in most of programming language? I could really use this feature ... different layout of application? See Question&Answers more detail:os...

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

0 votes

805 views

1 answer

oop - Why doesn't PHP permit private const?

I have a class that benefits from the use of constants in its internal implementation, but I would like to limit ... misstep I am ignorant of? See Question&Answers more detail:os...

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

0 votes

669 views

1 answer

oop - They say in java "every thing is an object". Is that true?

When I type int a = 5; Is a an object ? Can anyone explain to me how in java every thing is an object? See Question&Answers more detail:os...

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

0 votes

899 views

1 answer

oop - A Swift protocol requirement that can only be satisfied by using a final class

I'm modeling a owner/ownee scheme on Swift: class Owner<T: Ownee> { // ... } protocol Ownee { var owner: ... , but haven't found much so far. See Question&Answers more detail:os...

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

0 votes

659 views

1 answer

oop - C++ nested classes accessibility

Given the following code without considering friendship between two classes: class OutSideClass { ... public: int ... is not correct. See Question&Answers more detail:os...

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

0 votes

620 views

1 answer

oop - Why is type hinting necessary in PHP?

I am having trouble wrapping my head around the importance of Type hinting in PHP. Apparently 'type hinting' in ... Am I missing something here? See Question&Answers more detail:os...

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

0 votes

768 views

1 answer

oop - Object Oriented PHP Best Practices

Say I have a class which represents a person, a variable within that class would be $name. Previously, ... please recommend best practice? See Question&Answers more detail:os...

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

0 votes

600 views

1 answer

oop - How to count JavaScript array objects?

When I have a JavaScript object like this: var member = { "mother": { "name" : "Mary", "age" : "48" } ... so how to convert it into JSON array? See Question&Answers more detail:os...

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

0 votes

844 views

1 answer

oop - PHP: how to get a list of classes that implement certain interface?

I've got an interface interface IModule { public function Install(); } and some classes that implement this ... get this list with PHP. See Question&Answers more detail:os...

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

0 votes

626 views

1 answer

oop - Setting javascript prototype function within object class declaration

Normally, I've seen prototype functions declared outside the class definition, like this: function Container(param) ... first instance's value. See Question&Answers more detail:os...

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

0 votes

624 views

1 answer

oop - What are some advantages to using an interface in C#?

I was forced into a software project at work a few years ago, and was forced to learn C# quickly. My ... for their application? Thanks Kevin See Question&Answers more detail:os...

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

0 votes

739 views

1 answer

oop - redefining a single ruby method on a single instance with a lambda

In Ruby, is there a way to redefine a method of a particular instance of a class using a proc? For ... .bar Producing: hello goodbye Thanks. See Question&Answers more detail:os...

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

0 votes

764 views

1 answer

oop - PHP traits - defining generic constants

What is the best way to define constants that may be used by a number of classes within a namespace? I'm ... this isn't possible. Any ideas? See Question&Answers more detail:os...

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

0 votes

672 views

1 answer

oop - Is there anything composition cannot accomplish that inheritance can?

Composition and inheritance. I am aware that they are both tools to be chosen when appropriate, and context is very ... for use in my situation? See Question&Answers more detail:os...

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

0 votes

645 views

1 answer

oop - Reintroducing functions in Delphi

What was the motivation for having the reintroduce keyword in Delphi? If you have a child class that contains ... for the compile error. See Question&Answers more detail:os...

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

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