find-findindex.js

/* 
Write a function called `findUserByUsername` which accepts an array of objects, each with a key of username, and a string. 
The function should return the first object with the key of username that matches the string passed to the function. 
If the object is not found, return undefined. 

const users = [
  {username: 'mlewis'},
  {username: 'akagen'},
  {username: 'msmith'}
];

findUserByUsername(users, 'mlewis') // {username: 'mlewis'}
findUserByUsername(users, 'taco') // undefined
*/


function findUserByUsername(usersArray, username) {
  return usersArray.find(function(obj) {
    return obj["username"] === username; 
  })
}

/*
Write a function called `removeUser` which accepts an array of objects, each with a key of username, and a string. 
The function should remove the object from the array. If the object is not found, return undefined. 

const users = [
  {username: 'mlewis'},
  {username: 'akagen'},
  {username: 'msmith'}
];

removeUser(users, 'akagen') // {username: 'akagen'}
removeUser(users, 'akagen') // undefined
*/

function removeUser(usersArray, username) {
  const index = usersArray.findIndex(function(obj) {
    return obj['username'] === username;
  })
  
  if (index === -1) {return undefined};

  const foundUser = usersArray[index];
  usersArray.splice(index, 1);
  return foundUser;

  // return usersArray.find(function(obj) {
  //   if (obj["username"] === username) {
  //     usersArray.splice(obj["username"]);
  //     return obj["username"];
  //   } 
  // })
}