Ember.js MutableArray rejectBy() Method

import Route from "@ember/routing/route";

export default class DetailsRoute extends Route {
  details = [
    {
      name: "Anubhav",
      mobile: "1298119967",
      city: "Patna",
      country: "India",
      gender: "M",
      zipCode: "800020",
    },
    {
      name: "Sakshi",
      mobile: "1234567890",
      city: "Mumbai",
      country: "India",
      gender: "F",
      zipCode: "400001",
    },
    {
      name: "Satyam",
      mobile: "2222222222",
      city: "Delhi",
      country: "India",
      gender: "M",
      zipCode: "110012",
    },
    {
      name: "Shivam",
      mobile: "1122113322",
      city: "Patna",
      country: "India",
      gender: "M",
      zipCode: "530068",
    },
    {
      name: "Ayushi",
      mobile: "2244668800",
      city: "Jaipur",
      country: "India",
      gender: "F",
      zipCode: "302001",
    },
  ];
  someMoreDetails = [
    {
      name: "Yeshwant",
      mobile: "1133557799",
      city: "Chennai",
      country: "India",
      gender: "M",
      zipCode: "600001",
    },
    {
      name: "Siddhant",
      mobile: "9911000000",
      city: "Mangalore",
      country: "India",
      gender: "M",
      zipCode: "574142",
    },
    {
      name: "Khushi",
      mobile: "8888888888",
      city: "Pune",
      country: "India",
      gender: "F",
      zipCode: "111045",
    },
  ];
  city;
  start;
  end;
  model() {
    return this.details;
  }
  setupController(controller, model) {
    super.setupController(controller, model);
    controller.set("details", this.details);
    controller.set("someMoreDetails", this.someMoreDetails);
    controller.set("city", this.city);
    controller.set("start", this.start);
    controller.set("end", this.end);
  }
}

import Ember from "ember";
import { any, slice, reverseObjects, rejectBy } from "@ember/array";

export default Ember.Controller.extend({
  actions: {
    checkCity(city) {
      let res = this.details.any((person) => person.city == city);
      alert(`Present: ${res ? "YES" : "NO"}`);
    },
    sliceItems(start, end) {
      let tempItems = this.details.slice(start, end);
      let str = "";
      for (let i = 0; i < tempItems.length; i++)
        str += tempItems[i].name + "\n";
      alert(str);
    },
    reverse() {
      this.set("details", this.details.reverseObjects());
    },
    getFemale() {
      let tempItems = this.details.rejectBy("gender", "M");
      let str = "";
      for (let i = 0; i < tempItems.length; i++)
        str += tempItems[i].name + "\n";
      alert(str);
    },
    pushMoreDetails() {
      this.details.pushObjects(this.someMoreDetails);
    },
  },
});

import Route from "@ember/routing/route";
import { sortBy } from "@ember/array";

export default class RichestPeopleRoute extends Route {
    richestPeople = [
        { name: "mukesh ambani", netWorth: 90.7, isFamily: false },
        { name: "jeff Bezos", netWorth: 148.1, isFamily: false },
        { name: "Warren Buffet", netWorth: 99.3, isFamily: false },
        { name: "Bill gates", netWorth: 104.7, isFamily: false },
        { name: "elon Musk", netWorth: 253.4, isFamily: false },
        { name: "gautam adani and family", netWorth: 115.8, isFamily: true },
        { name: "Larry Page", netWorth: 93.4, isFamily: false },
        { name: "larryEllison", netWorth: 103.3, isFamily: false },
        { name: "sergeyBrin", netWorth: 89.9, isFamily: false },
        { name: "bernard Arnault and family", netWorth: 157.1, isFamily: true },
    ];
    firstPerson;
    lastPerson;
    idx = 5;
    randomPerson;
    num;
    model() {
        this.richestPeople = this.richestPeople.sortBy("netWorth");
        this.randomPerson = this.richestPeople[this.idx - 1];
        return this.richestPeople;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set("idx", this.idx);
        controller.set("firstPerson", this.richestPeople.firstObject);
        controller.set("lastPerson", this.richestPeople.lastObject);
        controller.set("randomPerson", this.randomPerson);
        controller.set("richestPeople", this.richestPeople);
        controller.set("num", this.richestPeople.length);
    }
}

import Ember from "ember";

export default Ember.Controller.extend({
    actions: {
        check(num) {
            num = parseFloat(num);
            let res = this.richestPeople.any(
                (person) => person.netWorth >= num);
            alert(`${res ? "YES" : "NO"}`);
        },
        getFamilyBusiness() {
            let tempItems = this.richestPeople
                .rejectBy("isFamily", false);
            let str = "";
            for (let i = 0; i < tempItems.length; i++)
                str += tempItems[i].name + "\n";
            alert(str);
        },
    },
});