Merge branch 'main' into unit-testing

Author: gildedgardenia

errors-and-debugging/exercises/DebuggingRuntimeErrors2.js

@@ -0,0 +1,21 @@
+let launchReady = false;
+let fuelLevel = 27000;
+
+if (fuelLevel >= 20000) {
+   console.log('Fuel level cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Insufficient fuel!');
+   launchReady = false;
+}
+
+if (launchReady) {
+   console.log("10, 9, 8...");
+   console.log("Fed parrot...");
+   console.log("6, 5, 4...");
+   console.log("Ignition...");
+   consoul.log("3, 2, 1...");
+   console.log("Liftoff!");
+} else {
+   console.log("Launch scrubbed.");
+}

exceptions/chapter-examples/finally/finally.js

@@ -0,0 +1,14 @@
+const input = require('readline-sync');
+
+let animals = [{name: 'cat'}, {name: 'dog'}];
+let index = Number(input.question("Enter index of animal:"));
+
+try {
+    console.log('animal at index:', animals[index].name);
+} catch(TypeError) {
+    console.log("We caught a TypeError, but our program continues to run!");
+} finally {
+    console.log("You tried to access an animal at index:", index);
+}
+
+console.log("the code goes on...");

exceptions/chapter-examples/finally/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "control-flow-type-error-finally",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "readline-sync": "^1.4.10"
+  }
+}

exceptions/chapter-examples/throw-default-error.js

@@ -0,0 +1 @@
+throw Error('You cannot divide by zero!');

exceptions/chapter-examples/try-catch/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "control-flow-type-error",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "readline-sync": "^1.4.10"
+  }
+}

exceptions/chapter-examples/try-catch/try-catch.js

@@ -0,0 +1,13 @@
+const input = require('readline-sync');
+
+let animals = [{name: 'cat'}, {name: 'dog'}];
+let index = Number(input.question("Enter index of animal:"));
+
+try {
+    console.log('animal at index:', animals[index].name);
+} catch(TypeError) {
+    console.log("We caught a TypeError, but our program continues to run!");
+    console.log("You tried to access an animal at index:", index);
+}
+
+console.log("the code goes on...");

exceptions/exercises/divide.js

@@ -0,0 +1,7 @@
+// Write a function called 'divide' that takes two parameters: a numerator and a denominator.
+
+// Your function should return the result of numerator / denominator.
+
+// However, if the denominator is zero you should throw the error, "Attempted to divide by zero."
+
+// Code your divide function here:

exceptions/exercises/test-student-labs.js

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+function gradeLabs(labs) {
+  for (let i=0; i < labs.length; i++) {
+    let lab = labs[i];
+    let result = lab.runLab(3);
+    console.log(`${lab.student} code worked: ${result === 27}`);
+  }
+}
+
+let studentLabs = [
+  {
+    student: 'Carly',
+    runLab: function (num) {
+        return Math.pow(num, num);
+    }
+  },
+  {
+    student: 'Erica',
+    runLab: function (num) {
+        return num * num;
+    }
+  }
+];
+
+gradeLabs(studentLabs);

modules/exercises/ScoreCalcs/averages.js

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+function averageForStudent(nameIndex,scores){
+  let sum = 0;
+  for (let i=0; i<scores.length; i++){
+    sum += scores[nameIndex][i];
+  }
+  let average = sum/scores[nameIndex].length;
+  return average;
+}
+
+function averageForTest(testIndex,scores){
+  let sum = 0;
+  for (let i=0; i<scores.length; i++){
+    sum += scores[i][testIndex];
+  }
+  let average = sum/scores[0].length;
+  return average;
+}
+
+//TODO: Export all functions within an object.

modules/exercises/display.js

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+//TODO: Export ONLY the printAll function.
+
+function printAll(names, tests, scores){
+  let header = 'Name';
+  let row = '';
+
+  for (let i = 0; i<tests.length; i++){
+    header += '\t'+tests[i];
+  }
+  console.log(header);
+
+  for (let name = 0; name<names.length; name++){
+    row = names[name];
+    for (let score = 0; score<scores[name].length;score++){
+      row += '\t'+scores[name][score];
+    }
+    console.log(row);
+  }
+  return;
+}
+
+function printStudentScores(index,students,tests,scores){
+  console.log(`Test results for ${students[index]}:`);
+  for (let i = 0; i<tests.length; i++){
+    console.log(`${tests[i]} = ${scores[index][i]}%.`);
+  }
+  return;
+}
+
+function printTestScores(index,test,students,scores){
+  console.log(`Class results for ${test} test:`);
+  for (let i = 0; i<students.length; i++){
+    console.log(`${students[i]} = ${scores[i][index]}%.`);
+  }
+  return;
+}