Rishabh570

[
  {
    "_id": "2016",
    "highestRating": 5.9
  },
  {
    "_id": "1896",
    "highestRating": 6
  },
  {

Rishabh570

{
  "$project": {
    "rating": {
      "$round": "$rating"
    }
  }
},
{
  "$group": {
    "_id": "$rating",

Rishabh570

[
  {
    "_id": 7,
    "movies": 1
  },
  {
    "_id": 8,
    "movies": 1
  },
  {

Rishabh570

{
  "$group": {
    "_id": "$release_year",
    "totalRuntime": {
      "$sum": "$runtime"
    }
  }
},
{
  "$sort": {

Rishabh570

[
  {
    "_id": "2005",
    "totalRuntime": 270
  },
  {
    "_id": "2016",
    "totalRuntime": 150
  },
  {

Rishabh570

someAsyncOperation(function (err, data) {
  if (err) {
    console.log(`Some error occurred. Look at it => ${err}`);
  } else {
    data.forEach((item, index) {
      asyncProcessingOfItem(item, function (itemErr, isProcessed) {
        if (itemErr) {
          console.log(`Some error occurred while processing item. Here's that beast => ${err}`);
        } else if (isProcessed) {
          console.log(`${item} processed succesfully!!!`);

Rishabh570

async.series([
    function(callback) {
        setTimeout(function() {
            // do some async task
            callback(null, 'one');
        }, 200);
    },
    function(callback) {
        setTimeout(function() {
            // then do another async task

Rishabh570

async.parallel([
    function(callback) {
        setTimeout(function() {
            callback(null, 'one');
        }, 200);
    },
    function(callback) {
        setTimeout(function() {
            callback(null, 'two');
        }, 100);

Rishabh570

async.race([
    function(callback) {
        setTimeout(function() {
            callback(null, 'one');
        }, 200);
    },
    function(callback) {
        setTimeout(function() {
            callback(null, 'two');
        }, 100);

Rishabh570

try {
  const resultFromFn1 = await asyncFnThatReturnsOne();
  const resultFromFn2 = await asyncFnThatReturnsTwo();
  return [resultFromFn1, resultFromFn2];
} catch (err) {
  console.log(err);
}