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pufface / visitor.ts

Last active June 1, 2020 00:34

	class Square {
	type = "Square" as const
	constructor(public side: number) {}
	}
	class Circle {
	type = "Circle" as const
	constructor(public radius: number) {}
	}
	class Rectangle {
	type = "Rectangle" as const

pufface / visitor.js

Last active May 5, 2019 10:57

	class Shape {
	constructor() {
	this.type = this.constructor.name
	}
	}
	class Square extends Shape {
	constructor(side) {
	super()
	this.side = side
	}

pufface / polymorphism.kt

Last active May 4, 2019 19:00

	interface Shape {
	fun area(): Double
	fun perimeter(): Double
	}
	class Square(val side: Double) : Shape {
	override fun area() = side * side
	override fun perimeter() = 4 * side
	}
	class Circle(val radius: Double) : Shape {
	override fun area() = radius * radius * Math.PI

pufface / visitor.kt

Last active May 4, 2019 18:59

	sealed class Shape
	class Square(val side: Double) : Shape()
	class Circle(val radius: Double) : Shape()
	class Rectangle(val width: Double, val height: Double) : Shape()

	fun main() {
	val shapes = listOf(
	Square(5.0),
	Circle(4.0),
	Rectangle(6.0, 7.0)