Working on lesson outline

buckyroberts · buckyroberts · commit bce9f94be7fd · 2016-07-07T00:25:46.000-04:00
diff --git a/ES6/Arrow_Functions/main.js b/ES6/Arrow_Functions/main.js
@@ -1,19 +1,20 @@
 "use strict";
 
-var circleArea1 = function (r) {
+function circleArea(r) {
     var PI = 3.14;
-    var area = PI * r * r;
-    return area;
-};
+    return PI * r * r;
+}
 
-let circleArea2 = (r) => {
+// we can now leave out the "function" keyword
+let circleArea1 = (r) => {
     const PI = 3.14;
-    let area = PI * r * r;
-    return area;
+    return PI * r * r;
 };
 
-let circleArea3 = (r) => 3.14 * r * r;
+// parenthesis are optional is there is one parameter
+// we can also leave out the curly braces to return a value directly (without needing multiple statements)
+let circleArea2 = r => 3.14 * r * r;
 
+console.log(circleArea(7));
 console.log(circleArea1(7));
 console.log(circleArea2(7));
-console.log(circleArea3(7));
diff --git a/ES6/Let/README.md b/ES6/Let/README.md
@@ -1,3 +1,8 @@
 # let
 
 The let statement declares a block scope local variable.
+
+# const
+
+The const declaration creates a read-only reference to a value. It does not mean the value it holds is immutable, just
+that the variable identifier cannot be reassigned.
diff --git a/ES6/Let/main.js b/ES6/Let/main.js
@@ -7,21 +7,21 @@ function theNotebook() {
     return movie;
 }
 
-function randomFunction() {
-    let isFan = true;
-    let phrase = 'Bacon is good';
-    console.log('\nBefore if:', phrase);
+console.log(movie); // Good Will Hunting
+console.log(theNotebook()); // The Notebook
+console.log(movie); // Good Will Hunting
+
+function buckysFunction() {
+    let isHorse = true;
+    let saying = 'Bacon is good';
+    console.log('\nBefore if:', saying);
 
-    if(isFan){
-        let phrase = 'I am a horse';
-        console.log('Inside if:', phrase);
+    if(isHorse){
+        let saying = 'I am a horse';
+        console.log('Inside if:', saying);
     }
 
-    console.log('After if:', phrase);
+    console.log('After if:', saying);
 }
 
-console.log(movie); // Good Will Hunting
-console.log(theNotebook()); // The Notebook
-console.log(movie); // Good Will Hunting
-
-randomFunction();
+buckysFunction();
