Category "class"

I need to decrease a value of the property only from specific class objects

I have three classes and two of them inheriting from an Animal class, Carnivore class should have method to decrease health by 50 if I call the method on Herbiv

Pool within a Class in Python

I would like to use Pool within a class, but there seems to be a problem. My code is long, I created a small-demo variant to illustrated the problem. It would b

Win32 window instances behaving differently

I have created a window class using the win32 api. It creates a window, passing in this as a parameter so that I can create and grab the object instance inside

Understanding __init_subclass__

I finally upgraded my python version and I was discovering the new features added. Among other things, I was scratching my head around the new __init_subclass__

Class is public, should be declared in a file named .java

I'm having this problem which I'm not sure why it's caused. "class Account is public, should be declared in a file named Account.java" I have 5 classes in my

Classes with property referencing other classes

I'm creating a library, and one part of it requires a structured model. Let's say we have sections, and each section can have subsections (categories). All of t

Listing all class attributes swift 3

I'm trying to print all the values from an object that inherits from a class, here is my example: I create the class: class Pokemon { var name: String? va

How to update history dictionary attribute of a class instance and preserve order?

I am new to class programming. I am trying to save initial attributes (which are a dictionary) of my object in its history, and then update history with the cha

ProGuard - unexpectedly contains class

While I'm trying to obfuscate simple DataLoader.class file in ProGuard I get this error: Reading program directory [C:\Users\uzytkownik\Documents\NetBeansProje

How does an instance of "Arbitrary" looks for a tree?

In our CS-Lectures we currently learn about QuickCheck in Haskell. Now I got a task to use QuickCheck with the following tree-type: data Tree = Leaf Int | Node

Why does passing and changing a class self-variable with an external function work for manipulating iterables but not variables?

I ran into a very hard to track down bug in my program where a class self-iterable was manipulated by an external function and discovered that some self-variabl

Java "VariableDeclaratorId expected after this token"

I'm working on a little project for fun, that's essentially a little combat emulator. I'm trying to use a class similar to struct in C++, as in using it to crea

React functional components vs classical components

I'm trying to understand when to use React functional components vs. classes and reading from the docs they don't really go into detail. Can you give me some pr

Initiate single instance from a constructor and use it as static method in another class

I have a class of utilities that I use all over my app it contains a method to format numbers class Utils { static numberFormater () { return new I

How to use pyreverse on Windows

I would like to create diagram class using pyreverse. I download it, and when I use this command: pyreverse.bat -c PyreverseCommand -a1 -s1 -f ALL -o png test.

Static vs Instance Variables: Difference?

What is the difference between a static and instance variable. The following sentence is what I cant get: In certain cases, only one copy of a particular v

Force child class to call parent method when overriding it

I am curious whether there is a way in Python to force (from the Parent class) for a parent method to be called from a child class when it is being overridden.

How can I access an array/object?

I have the following array and when I do print_r(array_values($get_user));, I get: Array ( [0] => 10499478683521864 [1] => 07/22/1983

TypeScript static classes

I wanted to move to TypeScript from traditional JS because I like the C#-like syntax. My problem is that I can't find out how to declare static classes in TypeS

Dynamically extending a class in javascript

How can we dynamically/programmatically extend a javascript class? More concretely, given something like class Polygon { constructor(area, sides) { thi