Nodejs Array Concatenate concatAll()

Method Source Code

//Let's add a concatAll() function to the Array type. The concatAll() function iterates over each 
//sub-array in the array and collects the results in a new, flat array. Notice that the concatAll() 
//function expects each item in the array to be another array.
//concatAll is a very simple function, so much so that it may not be obvious yet how it can be combined with map() to query a tree.

Array.prototype.concatAll = function() {
   var results = [];
   this.forEach(function(subArray) {
      results.push.apply(results, subArray);
   });//ww w.j  ava  2  s. c om

   return results;
};

// JSON.stringify([ [1,2,3], [4,5,6], [7,8,9] ].concatAll()) === "[1,2,3,4,5,6,7,8,9]"
// [1,2,3].concatAll(); // throws an error because this is a one-dimensional array

concatAll()

var exchanges = [
    [
        {symbol: "XFZ", price: 340.22, volume: 202373},
        {symbol: "ABC", price: 521.19, volume: 737323}
    ],
    [
         {symbol: "DEF", price: 987.82, volume: 2373},
         {symbol: "HIJ", price: 200.82, volume: 373}
    ]
...

concatAll()

Array.prototype.concatAll = function() {
  var results = [];
  this.forEach(function(subArray) {
    results.push.apply(results, subArray);
  });
  return results;
};

concatAll()

Array.prototype.concatAll = function() {
  var results = [];
  this.forEach( subArray => {
    subArray.forEach(elt => results.push(elt));
  });
  return results;
};

concatAll()

const exchanges= [
  [
    {symbol: 'XFX', price: 240.22, volume: 23432},
    {symbol: 'TNZ', price: 332.19, volume: 234},
  ],
  [
    {symbol: 'JXJ', price: 120.22, volume: 5323},
    {symbol: 'NYN', price: 88.47, volume: 98275},
  ],
...

concatAll()

Array.prototype.concatAll = function() {
  var results = [];
  this.forEach(function(subArray) {
    subArray.forEach(function(item) {
      results.push(item);
    });
  });
  return results;
};
...

concatAll()

Array.prototype.concatAll = function() {
    this.forEach( function(val1) {
        val1.forEach( function (val2) {
                return allWords.push(val2);
        });
    });
};

concatAll()

var exchanges = [
  [
      { symbol: "XFX", price: 240.22, volume: 23432 },
      { symbol: "TNZ", price: 332.19, volume: 234 }
    ],
  [
      { symbol: "JXJ", price: 120.22, volume: 5323 },
      { symbol: "NYN", price: 88.47, volume: 98275 }
    ]
...

concatAll()

Array.prototype.concatAll = function() {
  var results = [];
  this.forEach(function(subArray) {
    subArray.forEach(function(item) {
      results.push(item);
    });
  });
  return result;

Nodejs Array Concatenate concatAll()

Method Source Code

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