bloominstituteoftechnology · Abott1222 · Nov 27, 2018 · Nov 27, 2018 · Nov 27, 2018 · Nov 27, 2018
diff --git a/assignments/array-methods.js b/assignments/array-methods.js
@@ -56,28 +56,66 @@ const runners = [{"id":1,"first_name":"Charmain","last_name":"Seiler","email":"c
 // ==== Challenge 1: Use .forEach() ====
 // The event director needs both the first and last names of each runner for their running bibs.  Combine both the first and last names into a new array called fullName. 
 let fullName = [];
+runners.forEach( function(runnerObj) {
+    fullName.push(runnerObj.first_name + " " + runnerObj.last_name);
+})
 console.log(fullName);
 
 // ==== Challenge 2: Use .map() ====
 // The event director needs to have all the runner's first names converted to uppercase because the director BECAME DRUNK WITH POWER. Convert each first name into all caps and log the result
-let allCaps = [];
+let allCaps = runners.map(function(runnerObj) {
+    return runnerObj.first_name.toUpperCase();
+});
 console.log(allCaps); 
 
 // ==== Challenge 3: Use .filter() ====
 // The large shirts won't be available for the event due to an ordering issue.  Get a list of runners with large sized shirts so they can choose a different size. Return an array named largeShirts that contains information about the runners that have a shirt size of L and log the result
-let largeShirts = [];
+let largeShirts = runners.filter( function(runnerObj) {
+    return runnerObj.shirt_size === "L";
+});
 console.log(largeShirts);
 
 // ==== Challenge 4: Use .reduce() ====
 // The donations need to be tallied up and reported for tax purposes. Add up all the donations into a ticketPriceTotal array and log the result
-let ticketPriceTotal = [];
+
+
+const reducer = function(acc, runnerObj) {
+    return acc + runnerObj.donation;
+}
+
+
+let ticketPriceTotal = runners.reduce(reducer, 0)
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====
 // Now that you have used .forEach(), .map(), .filter(), and .reduce().  I want you to think of potential problems you could solve given the data set and the 5k fun run theme.  Try to create and then solve 3 unique problems using one or many of the array methods listed above.
 
-// Problem 1
+// Problem 1 Kick out the rich people by excluding donations larger than 200
+
+let remainingRunners = runners.filter( function(runnerObj) {
+    return runnerObj.donation < 200;
+})
+
+// Problem 2 combine everyones last name
+
+const reducer2 = function(acc, runnerObj) {
+    return acc + runnerObj.last_name;
+}
+
+let hugeLastName = runners.reduce(reducer2, '');
+console.log(hugeLastName);
+
+// Problem 3 Get #s for each shirt size
+
+let shirtSizeCount = {}
 
-// Problem 2
+runners.forEach( function(runnerObj) {
+    let size = runnerObj.shirt_size;
+    if(!shirtSizeCount[size]) {
+        shirtSizeCount[runnerObj.shirt_size] = 1;
+    } else {
+        shirtSizeCount[runnerObj.shirt_size]++;
+    }
+})
 
-// Problem 3
+console.log(JSON.stringify(shirtSizeCount));
diff --git a/assignments/callbacks.js b/assignments/callbacks.js
@@ -22,31 +22,84 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 */
 
 
+
+
 function getLength(arr, cb) {
   // getLength passes the length of the array into the callback.
+  return cb(arr.length);
 }
 
+getLength(items, function(length) {
+  console.log(length);
+});
+
+
+
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+  return cb(arr[arr.length-1]);
 }
 
+last(items, function(last) {
+  console.log(last);
+})
+
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  return cb(x+y);
 }
 
+sumNums(100,1, function(sum) {
+  console.log(sum);
+})
+
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  return cb(x*y);
 }
+multiplyNums(2,5, function(product) {
+  console.log(product);
+})
+
 
 function contains(item, list, cb) {
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
+  for(let i=0; i<list.length; i++) {
+    if(items[i] === item) {
+      return cb(true);
+    }
+  }
+  return cb(false);
 }
 
+contains(items[2], items, function(bool) {
+  console.log(bool);
+})
+
 /* STRETCH PROBLEM */
 
 function removeDuplicates(array, cb) {
   // removeDuplicates removes all duplicate values from the given array.
   // Pass the duplicate free array to the callback function.
   // Do not mutate the original array.
+
+  let arrayCopy = array.slice(0);
+  return cb(arrayCopy);
 }
+
+const testArray = ['Pencil', 'Notebook', 'yo-yo', 'Gum', 'a', 'b', 'a', 'Pencil', 'Notebook', 'yo-yo', 'Gum'];
+
+removeDuplicates(testArray, function(arrayCopy) {
+  let singleWords = [];
+
+  arrayCopy.forEach(word => {
+    if(singleWords.indexOf(word) < 0) {
+      singleWords.push(word);
+    }
+  });
+
+  console.log(singleWords);
+
+})
+
diff --git a/assignments/closure.js b/assignments/closure.js
@@ -1,20 +1,60 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
+function simpleEx(exampleString) {
+  const holdingStringForClosure = exampleString;
 
+  function closureOverExample() {
+    console.log(`I have access to ${holdingStringForClosure}`);
+  }
+
+  closureOverExample();
+};
+
+simpleEx("hello");
 
 // ==== Challenge 2: Create a counter function ====
 const counter = () => {
   // Return a function that when invoked increments and returns a counter variable.
+  let value = 0;
+
+  return function() {
+    console.log(value++);
+  }
 };
 // Example usage: const newCounter = counter();
 // newCounter(); // 1
 // newCounter(); // 2
+const newCounter = counter();
+newCounter();
+newCounter();
 
 /* STRETCH PROBLEM, Do not attempt until you have completed all previous tasks for today's project files */
 
 // ==== Challenge 3: Create a counter function with an object that can increment and decrement ====
 const counterFactory = () => {
+
+  let value = 0;
+
   // Return an object that has two methods called `increment` and `decrement`.
   // `increment` should increment a counter variable in closure scope and return it.
   // `decrement` should decrement the counter variable and return it.
+
+  return {
+    increment: function(){
+      console.log(value++);
+    },
+    decrement: function(){
+      console.log(value--);
+    }
+  }
 };
+
+console.log("\n From counter2: \n");
+const newCounter2 = counterFactory();
+for(let i = 0; i < 20; i++) {
+  if(i%3 ===0) {
+    newCounter2.decrement();
+  } else {
+    newCounter2.increment();
+  }
+}
diff --git a/assignments/stretch-function-conversion.js b/assignments/stretch-function-conversion.js
@@ -1,23 +1,48 @@
+'use strict';
 // Take the commented ES5 syntax and convert it to ES6 arrow Syntax
 
 // let myFunction = function () {};
+    const myFunction = () => {};
 
 // let anotherFunction = function (param) {
 //   return param;
 // };
 
+const anotherFunction = (param) => param;
+
 // let add = function (param1, param2) {
 //   return param1 + param2;
 // };
 // add(1,2);
 
+const add = (param1, param2) => param1+param2;
+console.log(add(1,2));
+
 // let subtract = function (param1, param2) {
 //   return param1 - param2;
 // };
 // subtract(1,2);
 
-// exampleArray = [1,2,3,4];
+const subtract = (param1, param2) => param1 - param2
+console.log(subtract(1,2));
+
+const exampleArray = [1,2,3,4];
 // const triple = exampleArray.map(function (num) {
 //   return num * 3;
 // });
-// console.log(triple);
+// console.log(triple);
+
+const triple = exampleArray.map( (num) => num*3 );
+
+
+/*IIFE closure */
+for(var i =0; i<5; i++) {
+    (function() {
+      var savingI = i;
+
+      //timer callback executes after loop
+      setTimeout( function() {
+        console.log(`number from timer callback ${savingI}`);
+      }, 1000);
+    })();
+  }