Class9 higherorder

01week/datatypes.js

@@ -0,0 +1,81 @@
+`use strict`
+
+//returns current date and time
+//create a function that inputs the year, month, and day
+//make new var to store the today var and toDateString method
+//use var today with toDateString method
+
+function dateDisplay(year, month, date) {
+  var today = new Date(year, month, date);
+  return today.toDateString();
+}
+
+dateDisplay(1985, 10, 1);
+
+//create a function with one argument.
+//the argument should be a number
+//return the argument with the toString() method to make the number a string
+
+function toNumber(number) {
+  return number.toString()
+}
+
+toNumber(13);
+
+//create a fucntion that receives one argument
+//argument should be a string
+//use parseInt() method on argument to pull a number out
+
+function stringNum(str){
+  return parseInt(str);
+}
+
+stringNum('15 years');
+
+//create a function with one argument
+//use the typeOf method on the argument and return the result
+
+function dataType(dT){
+  return typeof(dT);
+}
+
+dataType(`words words words`);
+
+//Create a function with two arguments
+//Inside the function, add the two var together
+//Use parseInt() to take the number out of the string
+
+function add(numOne, numTwo) {
+  return parseInt(numOne) + parseInt(numTwo)
+}
+
+add(`13`, `17`);
+
+//write a function that returns a true if two var are truthy
+//if both var are true, show "nope"
+//if both var are false, also show "nope"
+// if one is false and one is true, show "yep!"
+
+function truest(thingOne, thingTwo) {
+    if ((thingOne === true && thingTwo === true) || (thingOne === false && thingTwo === false)){
+    return `nope`;
+  } else {
+    return 'yep!';
+  }
+}
+
+truest(true, false);
+
+//write a function with two arguments
+//if both arguments are false, show a confirmation message
+//if either argument is true, return a negative response
+
+function womp(dumb, dumber) {
+  if (dumb === false && dumber === false) {
+    return `yes, they're both false`
+  } else {
+    return 'nah, try again'
+  }
+};
+
+womp(false, true);

02week/tests.js

@@ -0,0 +1,67 @@
+'use strict';
+
+const assert = require('assert');
+const readline = require('readline');
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout
+});
+
+
+function rockPaperScissors(hand1, hand2) {
+  // check for a tie, if it is a tie, return tie, if not check for win
+  // rock beats scissors, scissors beats paper, paper beats rock
+  //to find who won, compare hand1 to hand2
+  const handOne = 'Hand one wins!'
+  const handTwo = 'Hand two wins!'
+
+  if(hand1 === hand2) {
+    return "It's a tie!";
+  } else if (hand1 === 'rock'){
+    return   hand2 === 'paper' ? handTwo : handOne;
+  } else if (hand1 === 'paper') {
+    return hand2 === 'scissors' ? handTwo : handOne;
+  } else if (hand1 === 'scissors') {
+    return hand2 === 'rock' ? handTwo : handOne;
+  }
+};
+
+function getPrompt() {
+  rl.question('hand1: ', (answer1) => {
+    rl.question('hand2: ', (answer2) => {
+      console.log( rockPaperScissors(answer1, answer2) );
+      getPrompt();
+    });
+  });
+}
+
+// Tests
+
+if (typeof describe === 'function') {
+
+  describe('#rockPaperScissors()', () => {
+    it('should detect a tie', () => {
+      assert.equal(rockPaperScissors('rock', 'rock'), "It's a tie!");
+      assert.equal(rockPaperScissors('paper', 'paper'), "It's a tie!");
+      assert.equal(rockPaperScissors('scissors', 'scissors'), "It's a tie!");
+    });
+    it('should detect which hand won', () => {
+      assert.equal(rockPaperScissors('rock', 'paper'), "Hand two wins!");
+      assert.equal(rockPaperScissors('paper', 'scissors'), "Hand two wins!");
+      assert.equal(rockPaperScissors('scissors', 'rock'), "Hand two wins!");
+      assert.equal(rockPaperScissors('scissors', 'paper'), "Hand one wins!");
+      assert.equal(rockPaperScissors('rock', 'scissors'), "Hand one wins!");
+      assert.equal(rockPaperScissors('paper', 'rock'), "Hand one wins!");
+    });
+    it('should scrub input to ensure lowercase with "trim"ed whitepace', () => {
+      assert.equal(rockPaperScissors('rOcK', ' paper '), "Hand two wins!");
+      assert.equal(rockPaperScissors('Paper', 'SCISSORS'), "Hand two wins!");
+      assert.equal(rockPaperScissors('rock ', 'sCiSsOrs'), "Hand one wins!");
+    });w
+    // it('should detect ')
+  });
+} else {
+
+  getPrompt();
+
+}

04week/gitOlympics.js

@@ -0,0 +1,9 @@
+'use strict'
+
+const names = ['athens', 'berlin', 'atlanta', 'seoul', 'los angeles']
+
+const printListOfOlympics=(arr)=>{
+  arr.forEach(i => console.log(i))
+}
+
+printListOfOlympics(names);

06week/higherOrder.js

@@ -3,15 +3,45 @@
 const assert = require('assert');
 
 function forEach(arr, callback) {
-  // Your code here
+  // create an array with whatever you want in it
+  const arrProblemOne = [1, 2, 3]
+
+  //make a for loop that runs the number of items in the array amount of times.
+  //make a variable that prints a phrase the amount of times defined by the for loop
+  for (let i = 0; i < arrProblemOne.length; i++) {
+      callback();
+    }
+  }
 }
 
 function map(arr, callback) {
-  // Your code here
+  // Create an array, put whatever you want in it
+  const test = ['1', '2', '3', '4', '5', '6'];
+
+  //doThis(), a function that creates a new array, then does whatever function you want when you call doThis to the original array
+  //pushes the result of the called function to the new array
+  //print out the new array
+  const doThis = (arr, callBackFunction) => {
+  const newArr = [];
+  test.forEach((i) => {
+    newArr.push(callBackFunction(i));
+  });
+  console.log(newArr);
+};
 }
 
 function filter(arr, callback) {
-  // Your code here
+  //create an array with three numbers
+  const arrProblemThree = [1, 2, 3];
+
+  //longestWords(), create a function that takes an array and a function
+  //the called function affects the called array
+  //a new, empty array accepts the results of the function
+  const filtered = (arrTwo, callbackTwo) => {
+    const arrResultThree = [];
+    if (callbackTwo(arrTwo[i])) arrResultThree.push(arrTwo[i])
+    }
+    console.log(arrResultThree);
 }
 
 function some(arr, callback) {

index.html

@@ -5,6 +5,6 @@
     <title></title>
   </head>
   <body>
-    <h1>Hello World!</h1>
+    <h1>Hello Eric, how are you!</h1>
   </body>
 </html>