Object Browser inside the Android Studio
Navigate menu > Type Hierarchy.
class
Using classes with the Arduino
On Arduino 1.0, this compiles just fine: class A { public: int x; virtual void f() { x=1; } }; class B : public A { public: int y; virtual void f() { x=2; } }; A *a; B *b; const int TEST_PIN = 10; void setup() { a=new A(); b=new B(); pinMode(TEST_PIN,OUTPUT); } void … Read more
What is the proper way to create new instance of generic class in kotlin?
If you let IntelliJ add explicit type information, you see that entityClass is actually of type Class<Class<String>>. I’m not sure if that’s what you want. In line 2 you are first creating an instance of Class<T> and then one of T but that’s not possible anyway, because the generic information about T is lost at … Read more
Why are classes inside Scala package objects dispreferred?
But why? Defining a class inside a package object should be exactly equivalent to defining the classes inside of a separate package with the same name, Precisely. The semantics are (currently) the same, so if you favor defining a class inside a package object, there should be a good reason. But the reality is that … Read more
Limitation with classes derived from generic classes in swift
Ssreg, Unfortunately this is official: You can subclass a generic class, but the subclass must also be a generic class. Let us hope Apple fixes this in a future version. Meanwhile, let us see this as an opportunity to exploit aggregation instead of subclassing. NOTE: As a poor man’s version of a solution, one could … Read more
init function for structs
Go doesn’t have implicit constructors. You would likely write something like this. package main import “fmt” type Console struct { X int Y int } func NewConsole() *Console { return &Console{X: 5} } var console Console = *NewConsole() func main() { fmt.Println(console) } Output: {5 0}
Is it OK to put propTypes and defaultProps as static props inside React class?
In fact, it’s exactly the same in terms of performance. React.JS is a relatively new technology, so it’s not clear yet what are considered good practices or don’t. If you want to trust someone, check this AirBNB’s styleguide: https://github.com/airbnb/javascript/tree/master/react#ordering import React, { PropTypes } from ‘react’; const propTypes = { id: PropTypes.number.isRequired, url: PropTypes.string.isRequired, text: … Read more
How do I override inherited methods when using JavaScript ES6/ES2015 subclassing
The solution I found was to create a new function in the subclass that has the same name as the inherited function. In this case push. Then inside the overriding function the inherited function is called via the super keyword. class newArray extends Array{ push(value) { //execute any logic require before pushing value onto array … Read more
How to check if two objects have the same class in Kotlin?
You can get the type of an object with ::class, and compare those: val sameClass = obj1::class == obj2::class More specifically, this section of the above documentation describes that ::class on an object gives you exactly what you want, the exact class of the instance you’re calling it on.
Main method in Scala
To answer your question, have a look on the following : I made a scala class, compiled and decompiled it, and what I got is interesting. class MyScalaClass{ def main(args: Array[String]): Unit = { println(“Hello from main of class”) } } Compiled from “MyScalaClass.scala” public class MyScalaClass { public void main(java.lang.String[]); public MyScalaClass(); } So … Read more