battmanz

using System;
using System.Linq;
using System.Web.Script.Serialization;

class Main {
  public static void Main (string[] args) {
    string username = "George";
    string[] orderedHeroes = { "Luke Skywalker", "Han Solo", "Leia Organa", "Rey", "Finn", "Poe Dameron" };
    
    // Store CreateRanking in a variable as a first-class function.

battmanz

const curriedCreateRanking = _.curry(createRanking);
const whatIsThis = curriedCreateRanking(currentUser);

console.log(orderedHeroes.map(whatIsThis));
// Output: [
//           {'username':'George','rebel':'Luke Skywalker','index':0},
//           {'username':'George','rebel':'Han Solo','index':1},
//           {'username':'George','rebel':'Leia Organa','index':2},
//           {'username':'George','rebel':'Rey','index':3},
//           {'username':'George','rebel':'Finn','index':4},

battmanz

const partialCreateRanking = _.partial(createRanking, currentUser);

console.log(orderedHeroes.map(partialCreateRanking));
// Output: [
//           {'username':'George','rebel':'Luke Skywalker','index':0},
//           {'username':'George','rebel':'Han Solo','index':1},
//           {'username':'George','rebel':'Leia Organa','index':2},
//           {'username':'George','rebel':'Rey','index':3},
//           {'username':'George','rebel':'Finn','index':4},
//           {'username':'George','rebel':'Poe Dameron','index':5}

battmanz

const currentUser = 'George';

const starWarsHeroes = [
  'Luke Skywalker',
  'Han Solo',
  'Leia Organa',
  'Rey',
  'Finn',
  'Poe Dameron'
];

battmanz

// Use in place of `[]`.
const list1 = Immutable.List(['A', 'B', 'C']);
const list2 = list1.push('D', 'E');

console.log([...list1]); // ['A', 'B', 'C']
console.log([...list2]); // ['A', 'B', 'C', 'D', 'E']


// Use in place of `new Map()`
const map1 = Immutable.Map([

battmanz

const set = new Set(['A', 'B', 'C']);

// Instead of: set.add('D');
const set2 = new Set([...set, 'D']);

// Instead of: set.delete('B');
const set3 = new Set([...set].filter(key => key !== 'B'));

// Instead of: set.clear();
const set4 = new Set();

battmanz

const map = new Map([
  [1, 'one'],
  [2, 'two'],
  [3, 'three']
]);

// Instead of: map.set(4, 'four');
const map2 = new Map([...map, [4, 'four']]);

// Instead of: map.delete(1);

battmanz

'use strict';

const a = Object.freeze([4, 5, 6]);

// Instead of: a.push(7, 8, 9);
const b = a.concat(7, 8, 9);

// Instead of: a.pop();
const c = a.slice(0, -1);

battmanz

const constants = {
  heightRequirement: 46,
  // ... other constants go here
};

function canRide(height) {
  return height >= constants.heightRequirement;
}

battmanz

const heightRequirement = 46;

function canRide(height) {
  return height >= heightRequirement;
}