coding-meetup-no-12.js

// CODEWARS 7KYU -Coding Meetup #12 - Higher-Order Functions Series - Find GitHub admins
// INSTRUCTIONS:
// 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 organising.

// 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' }
// ]
// Notes:

// The original order should be preserved.
// If there are no GitHub admin developers in a given language then return an empty array [].
// The input array will always be valid and formatted as in the example above.
// The strings representing whether someone is a GitHub admin will always be formatted as 'yes' and 'no' (all lower-case).
// The strings representing a given language will always be formatted in the same way (e.g. 'JavaScript' will always be formatted with upper-case 'J' and 'S'.

SOLUTION:

function findAdmin(list, lang) {
    return list.filter(x => x.language === lang && x.githubAdmin === 'yes')
  }