作为参数传递泛型类的Typescript

class Box<T> {
  private value: T;

  constructor(value: T) {
    this.value = value;
  }

  getValue(): T {
    return this.value;
  }
}

const box = new Box<string>("Hello");
console.log(box.getValue()); // 输出：Hello

function printValue<T>(box: Box<T>): void {
  console.log(box.getValue());
}

const box1 = new Box<string>("Hello");
const box2 = new Box<number>(42);

printValue(box1); // 输出：Hello
printValue(box2); // 输出：42