agoldis

public Boolean isWithinCircle(Double x, Double y, Double radius) {
  final Double TWO = new Double(2);
  return (Math.pow(x, TWO) + Math.pow(y, TWO)) < Math.pow(radius, TWO);
}

public List<PhotosCollection> getPhotosCollectionsWithinRadius(List<Locations> locationsList) {
  List<PhotosCollection> photosCollection = new ArrayList<>();
  final Double RADIUS = new Double(10);

  for(Location location: locationsList) {

agoldis

List<ResultType> resultsList = new ArrayList<>();
final Double TWO = new Double(2);
final Double LIMIT = new Double(10);
for(ItemType item: itemsList) {
  if(Math.pow(item.x, TWO) + Math.pow(item.y, TWO) < Math.pow(LIMIT, TWO)) {
    resultsList.add(item.toResultType());
  }
}

agoldis

{
  app: {
    users: {
      user01: {
        id: "user01",
        name: "John"
      },
      user02: {
        id: "user02",
        name: "Bob"

agoldis

/* 
index.js
*/
import React from "react";
import { render } from "react-dom";
import { Provider } from "react-redux";
import { createStore } from "redux";

import Header from "./Header";
import UserTasks from "./UserTasks";

agoldis

{
  "presets": [
    "@babel/preset-react",
    ["@babel/preset-env", {
      "targets": {
        "browsers": ["last 2 versions", "safari >= 7"]
      }
    }]
  ]
}

agoldis

const initialState = {
  users: [{ id: "user01", name: "John" }, { id: "user02", name: "Bob" }],
  tasks: [
    { id: "task01", title: "Wash car", assignee: "user01" },
    { id: "task02", title: "Watch tutorial", assignee: "user01" },
    { id: "task03", title: "Do Homework", assignee: "user02" }
  ],
  get userTasks() {
    return this.users.map(user =>
      Object.assign({}, user, {

agoldis

const initialState = {
  users: [{ id: "user01", name: "John" }, { id: "user02", name: "Bob" }],
  tasks: [
    { id: "task01", title: "Wash car", assignee: "user01" },
    { id: "task02", title: "Watch tutorial", assignee: "user01" },
    { id: "task03", title: "Do Homework", assignee: "user02" }
  ],
  profiles: [
    { id: "profile01", user: "user01", picture: "picture01URL" },
    { id: "profile02", user: "user02", picture: "picture02URL" }

agoldis

import React from "react";
import { connect } from "react-redux";

const mapStateToProps = (({ userTasksCount }) => ({ userTasksCount }));

class Header extends React.Component {
  render() {
    const { userTasksCount } = this.props;
    return <div>
      {JSON.stringify(userTasksCount)}

agoldis

const initialState = {
  app: {
    users: [{ id: "user01", name: "John" }, { id: "user02", name: "Bob" }],
    tasks: [
      { id: "task01", title: "Wash car", assignee: "user01" },
      { id: "task02", title: "Watch tutorial", assignee: "user01" },
      { id: "task03", title: "Do Homework", assignee: "user02" }
    ]
  },
  ui: { /* ... */ }

agoldis

import { createSelector } from "reselect";

const initialState = {
  app: {
    users: [{ id: "user01", name: "John" }, { id: "user02", name: "Bob" }],
    tasks: [
      { id: "task01", title: "Wash car", assignee: "user01" },
      { id: "task02", title: "Watch tutorial", assignee: "user01" },
      { id: "task03", title: "Do Homework", assignee: "user02" }
    ]