hof-6-find-gh-admins.js

// ***********************************************************************************************************************
// https://www.codewars.com/kata/coding-meetup-number-12-higher-order-functions-series-find-github-admins

// You will be given an array of objects representing data about developers who have signed up to attend the next coding
// meetup that you are organizing.

// Given the following input array:
// var list1 = [
//   { firstName: 'Harry', lastName: 'K.', country: 'Brazil', continent: 'Americas', age: 22, language: 'JavaScript', githubAdmin: 'yes' },
//   { firstName: 'Kseniya', lastName: 'T.', country: 'Belarus', continent: 'Europe', age: 49, language: 'Ruby', githubAdmin: 'no' },
//   { firstName: 'Jing', lastName: 'X.', country: 'China', continent: 'Asia', age: 34, language: 'JavaScript', githubAdmin: 'yes' },
//   { firstName: 'Piotr', lastName: 'B.', country: 'Poland', continent: 'Europe', age: 128, language: 'JavaScript', githubAdmin: 'no' }
// ];

// write a function that when executed as findAdmin(list1, 'JavaScript') returns only the JavaScript developers who are GitHub admins:

// [
//   { firstName: 'Harry', lastName: 'K.', country: 'Brazil', continent: 'Americas', age: 22, language: 'JavaScript', githubAdmin: 'yes' },
//   { firstName: 'Jing', lastName: 'X.', country: 'China', continent: 'Asia', age: 34, language: 'JavaScript', githubAdmin: 'yes' }
// ]
// ***********************************************************************************************************************

// solution 1:

function findAdmin(list, lang) {
  const admins = [];
  
  list.forEach(dev => {
    if (dev.language === lang && dev.githubAdmin === 'yes') admins.push(dev);
  });
  
  return admins;
}

// solution 2:

const findAdmin = (list, lang) =>
  list.filter(({ language, githubAdmin }) => language === lang && githubAdmin === 'yes');