Singleton

Singleton

七月 31, 2019

Singleton is a simple and common Javascript Pattern.

Singleton implement sample

Instantial a mobx store

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class UserStore {
  @observable name: string = "jingsong";
  @action
  updateName(name: string) {
    this.name = name;
  }
}
function instantiate(cons, ...args) {
  if (!cons.instance) {
    cons.instance = new cons(...args);
  }
  return cons.instance;
}
instantiate(UserStore);