ZA Cape Town | ITP-May-2025 | Dawud Vermeulen | Sprint 2 | Module-Data-Groups

Sprint-2/debug/address.js

@@ -1,7 +1,7 @@
 // Predict and explain first...
 
 // This code should log out the houseNumber from the address object
-// but it isn't working...
+// but it isn't working..
 // Fix anything that isn't working
 
 const address = {
@@ -12,4 +12,6 @@ const address = {
   postcode: "XYZ 123",
 };
 
-console.log(`My house number is ${address[0]}`);
+console.log(`My house number is ${address.houseNumber}`);
+console.log(`My house number is ${address['houseNumber']}`);
+

Sprint-2/debug/author.js

@@ -1,5 +1,4 @@
-// Predict and explain first...
-
+// Predict and explain first..
 // This program attempts to log out all the property values in the object.
 // But it isn't working. Explain why first and then fix the problem
 
@@ -11,6 +10,6 @@ const author = {
   alive: true,
 };
 
-for (const value of author) {
+for (const value of Object.values(author)) { //for-of is for arrays not objects so use Object.values
   console.log(value);
-}
+}

Sprint-2/debug/recipe.js

@@ -1,8 +1,7 @@
 // Predict and explain first...
-
 // This program should log out the title, how many it serves and the ingredients.
 // Each ingredient should be logged on a new line
-// How can you fix it?
+// How can you fix it? 
 
 const recipe = {
   title: "bruschetta",
@@ -12,4 +11,4 @@ const recipe = {
 
 console.log(`${recipe.title} serves ${recipe.serves}
   ingredients:
-${recipe}`);
+${recipe.ingredients.join("\n")}`);;

Sprint-2/implement/contains.js

@@ -1,3 +1,10 @@
-function contains() {}
+function contains(obj, property) {
 
-module.exports = contains;
+    if(obj === null || obj === undefined){
+        return false
+    } 
+    return obj[property] !== undefined;
+}
+
+module.exports = contains; 
+// work done.

Sprint-2/implement/lookup.js

@@ -1,5 +1,12 @@
-function createLookup() {
-  // implementation here
+function createLookup(pairs) {
+  const lookup = {};
+  for (const pair of pairs){
+    if(pair && pair.length === 2){
+      lookup[pair[0]] = pair[1];
+    }
+  }
+  return lookup;
 }
 
 module.exports = createLookup;
+// in working order

Sprint-2/implement/querystring.js

@@ -1,16 +1,20 @@
 function parseQueryString(queryString) {
   const queryParams = {};
-  if (queryString.length === 0) {
+  if (queryString === "") { //removed the .length method
     return queryParams;
   }
   const keyValuePairs = queryString.split("&");
 
   for (const pair of keyValuePairs) {
-    const [key, value] = pair.split("=");
+    //const [key, value] = pair.split("="); //this line is making kak and its so frustrating cause it assigns value ='x' (test case 1) and leaves the rest of the equation.
+    const parts = pair.split("=");
+    const key = parts[0];
+    const value = parts.length > 1 ? parts.slice(1).join('=') : ''; //clunky but it works to split them and stitch it together again
     queryParams[key] = value;
   }
+
 
   return queryParams;
 }
 
-module.exports = parseQueryString;
+module.exports = parseQueryString;

Sprint-2/implement/tally.js

@@ -1,3 +1,14 @@
-function tally() {}
+function tally(items) {
+    if (!Array.isArray(items)){
+        throw new TypeError('that aint no array bay bay'); //okay so this is the biggie smalls and its working
+    }
+    const counts = {};
+
+    for (const item of items){
+        counts[item] = (counts[item] || 0) +1; //simple sexy core logic
+    }
+    return counts;
+}
 
 module.exports = tally;
+//no updates. works well

Sprint-2/interpret/invert.js

@@ -10,20 +10,30 @@ function invert(obj) {
   const invertedObj = {};
 
   for (const [key, value] of Object.entries(obj)) {
-    invertedObj.key = value;
+    const numKey = Number(key);
+
+    if (!isNaN(numKey) && String(numKey) === key) {
+      invertedObj[value] = numKey;
+    } else {
+      invertedObj[value] = key; //convert key to number if it is a number
+    //how do i convert it to a number if it is a number? 
+    //if the key is a number, convert it to a number, otherwise keep it as a string
+      }
   }
 
   return invertedObj;
 }
+module.exports = invert;
 
-// a) What is the current return value when invert is called with { a : 1 }
-
-// b) What is the current return value when invert is called with { a: 1, b: 2 }
-
+// a) What is the current return value when invert is called with { a : 1 } 
+// {'1':'a'}
+// b) What is the current return value when invert is called with { a: 1, b: 2 } 
+// { '1': 'a', '2': 'b'}
 // c) What is the target return value when invert is called with {a : 1, b: 2}
-
+// {1 : a, 2 : b }
 // c) What does Object.entries return? Why is it needed in this program?
-
+// its a method that takes a obj and returns the [key, value] pairs.
 // d) Explain why the current return value is different from the target output
-
+// cause its converted to strings, the key must be a int and the value must be a string.
 // e) Fix the implementation of invert (and write tests to prove it's fixed!)
+// in file invert.test.js