Сергей Соколов

const getValues = (obj, count) =>
  Object.values(obj).slice(0, count);

function getValues(obj, count) {
  const result = [];

  for (const k in obj) {
    if (result.length === count) {
      break;
    } else if (obj.hasOwnProperty(k)) {
      result.push(obj[k]);
    }
  }

  return result;
}

"use strict";

var handleChange = function handleChange(e) {
  return function (dispatch) {
    dispatch({
      type: PROMO_CODE,
      payload: e.target.value
    });
  };
};

var t0 = performance.now();
doSomething();
var t1 = performance.now();
console.log("Call to doSomething took " + (t1 - t0) + " milliseconds.");

var t0, t1;
var results = [];

for (var i = 0; i < nTimes; i++) {
  t0 = performance.now();
  doSomething();
  t1 = performance.now();
  results.push(t1 - t0);
}

// если надо вывести результат
results.forEach(function(result, i) {
  console.log('Call to doSomething #' + (i + 1) + ' took ' + result + ' milliseconds.');
});

$ctx = stream_context_create(array('http'=>
    array(
        'timeout' => 1200,  //1200 Seconds is 20 Minutes
    )
));

echo file_get_contents('http://example.com/', false, $ctx);

async function delayedPromise(cb) {
  const delay = () => new Promise(resolve => setTimeout(resolve, 3000));
  const result = await Promise.all([cb(), delay()]);
  return result[0];
}
async function runPromisesInSequence(promises) {
  for (let promise of promises) {
    console.log(await delayedPromise(promise), new Date());
  }
}
const pr1 = () => new Promise(res => setTimeout(() => res('r1'), 1000));
const pr2 = () => new Promise(res => setTimeout(() => res('r2'), 5000));
const pr3 = () => new Promise(res => setTimeout(() => res('r3'), 0));
const y = [pr1, pr2, pr3];
runPromisesInSequence(y);

const pr1 = new Promise(res => setTimeout(() => res('r1'), 1000));

$oneLevelArray = array_map(function($item) {  
    return is_array($item) ? current($item) : $item;
}, $twoLevelArray);