#4.5 Polymorphism
interface SStorage<T> {
[key: string]: T
}
class LocalStorage<T> {
private storage: SStorage<T> = {}
set(key: string, value: T) {
this.storage[key] = value;
}
remove(key: string) {
delete this.storage[key];
}
get(key: string): T {
return this.storage[key];
}
clear() {
this.storage = {};
}
}
const stringSotrage = new LocalStorage<string>();
stringStorage.get('key');
const booleansStorage = new LocalStorage<boolean>();
booleansStorage.get('jjw');
TypeScript
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