Replace Conditional with Polymorphism

open in web edition

How do I access the web edition?

refactorgram

switch (bird.type) { case 'EuropeanSwallow': return “average”; case 'AfricanSwallow': return (bird.numberOfCoconuts > 2) ? “tired” : “average”; case 'NorwegianBlueParrot': return (bird.voltage > 100) ? “scorched” : “beautiful”; default: return “unknown”;

image/svg+xml 

class EuropeanSwallow { get plumage() { return “average”; } class AfricanSwallow { get plumage() { return (this.numberOfCoconuts > 2) ? “tired” : “average”; } class NorwegianBlueParrot { get plumage() { return (this.voltage > 100) ? “scorched” : “beautiful”; }