From 465f3bfd2b72f522119edcc5b1ac58f9a9e06cc6 Mon Sep 17 00:00:00 2001
From: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Date: Sat, 7 Jan 2017 15:23:45 +0200
Subject: [PATCH 1/3] use object shorthand notation

---
 README.md | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/README.md b/README.md
index 94e7fa2c..0edd66b7 100644
--- a/README.md
+++ b/README.md
@@ -400,9 +400,9 @@ function showDeveloperList(developers) {
     var experience = developer.getExperience();
     var githubLink = developer.getGithubLink();
     var data = {
-      expectedSalary: expectedSalary,
-      experience: experience,
-      githubLink: githubLink
+      expectedSalary,
+      experience,
+      githubLink
     };
 
     render(data);
@@ -415,9 +415,9 @@ function showManagerList(managers) {
     var experience = manager.getExperience();
     var portfolio = manager.getMBAProjects();
     var data = {
-      expectedSalary: expectedSalary,
-      experience: experience,
-      portfolio: portfolio
+      expectedSalary,
+      experience,
+      portfolio
     };
 
     render(data);
@@ -440,9 +440,9 @@ function showList(employees) {
     }
 
     var data = {
-      expectedSalary: expectedSalary,
-      experience: experience,
-      portfolio: portfolio
+      expectedSalary,
+      experience,
+      portfolio
     };
 
     render(data);

From 7035841c0370ebe2a7f8084bc5a8e3353f95f406 Mon Sep 17 00:00:00 2001
From: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Date: Sat, 7 Jan 2017 15:32:37 +0200
Subject: [PATCH 2/3] remove default constructors

Ref: http://eslint.org/docs/rules/no-useless-constructor
---
 README.md | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/README.md b/README.md
index 0edd66b7..c13fd5a8 100644
--- a/README.md
+++ b/README.md
@@ -623,10 +623,6 @@ Array.prototype.diff = function(comparisonArray) {
 **Good:**
 ```javascript
 class SuperArray extends Array {
-  constructor(...args) {
-    super(...args);
-  }
-
   diff(comparisonArray) {
     var values = [];
     var hash = {};
@@ -1155,10 +1151,6 @@ class Rectangle {
 }
 
 class Square extends Rectangle {
-  constructor() {
-    super();
-  }
-
   setWidth(width) {
     this.width = width;
     this.height = width;
@@ -1186,8 +1178,6 @@ renderLargeRectangles(rectangles);
 **Good**:
 ```javascript
 class Shape {
-  constructor() {}
-
   setColor(color) {
     // ...
   }

From 14e83d5ce922fac5f9ef726447ea6e4b44b70785 Mon Sep 17 00:00:00 2001
From: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Date: Sat, 7 Jan 2017 15:37:00 +0200
Subject: [PATCH 3/3] use functional Array methods

Also exclude hidden type coercion from array elements comparing.
---
 README.md | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/README.md b/README.md
index c13fd5a8..96f5dd00 100644
--- a/README.md
+++ b/README.md
@@ -624,20 +624,7 @@ Array.prototype.diff = function(comparisonArray) {
 ```javascript
 class SuperArray extends Array {
   diff(comparisonArray) {
-    var values = [];
-    var hash = {};
-
-    for (var i of comparisonArray) {
-      hash[i] = true;
-    }
-
-    for (var i of this) {
-      if (!hash[i]) {
-        values.push(i);
-      }
-    }
-
-    return values;
+    return this.filter(elem => !comparisonArray.includes(elem));
   }
 }
 ```