added problems

AlveeM · AlveeM · commit d86db2dc74cf · 2021-04-24T00:19:26.000-04:00
diff --git a/csbin/callbacks/04-forEach.js b/csbin/callbacks/04-forEach.js
@@ -1,7 +1,11 @@
-function forEach(array, callback) {
+function forEach(array, callback, thisArg) {
 	for (let i = 0; i < array.length; i++) {
-    callback(array[i], i, array);
+    if (thisArg !== undefined) {
+      callback.call(thisArg, array[i], i, array);
+    } else {
+      callback(array[i], i, array);
+    }
   }
 }
 
-// forEach([1, 2, 3], (el) => console.log(el))
+forEach([1, 2, 3], (el) => console.log(el))
diff --git a/csbin/callbacks/07-intersection.js b/csbin/callbacks/07-intersection.js
@@ -0,0 +1,8 @@
+function intersection(...arrays) {
+  return arrays.reduce((acc, arr) => {
+    return acc.filter(el => arr.includes(el));
+  })
+}
+
+console.log(intersection([5, 10, 15, 20], [15, 20, 88, 1, 5, 7], [1, 10, 15, 5]));
+// should log: [5, 15]
diff --git a/csbin/callbacks/08-union.js b/csbin/callbacks/08-union.js
@@ -1,10 +1,10 @@
 function union(...arrays) {
-	return arrays.reduce((acc, arr) => {
-      arr.forEach(el => {
-          if (!acc.includes(el)) {
-              acc.push(el);
-          }
-      });
-      return acc;
-  })
-}
+    const set = arrays.reduce((acc, arr) => {
+        arr.forEach(el => acc.add(el));
+        return acc;
+    }, new Set());
+    return Array.from(set);
+}
+
+console.log(union([5, 10, 15], [15, 88, 1, 5, 7], [100, 15, 10, 1, 5]));
+// should log: [5, 10, 15, 88, 1, 7, 100]
diff --git a/csbin/oop/05-subclassing.js b/csbin/oop/05-subclassing.js
@@ -24,7 +24,7 @@ const adminFunctionStore = {
 function adminFactory(name, score) {
   const admin = userFactory(name, score);
   admin.type = "Admin";
-  Object.setPrototypeOf(admin, adminFunctionStore);
+  admin.__proto__ = adminFunctionStore;
   return admin;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1,7 +1,11 @@`
`1`		`-function forEach(array, callback) {`
	`1`	`+function forEach(array, callback, thisArg) {`
`2`	`2`	`for (let i = 0; i < array.length; i++) {`
`3`		`- callback(array[i], i, array);`
	`3`	`+ if (thisArg !== undefined) {`
	`4`	`+ callback.call(thisArg, array[i], i, array);`
	`5`	`+ } else {`
	`6`	`+ callback(array[i], i, array);`
	`7`	`+ }`
`4`	`8`	`}`
`5`	`9`	`}`
`6`	`10`
`7`		`-// forEach([1, 2, 3], (el) => console.log(el))`
	`11`	`+forEach([1, 2, 3], (el) => console.log(el))`
Original file line number	Diff line number	Diff line change
`@@ -24,7 +24,7 @@ const adminFunctionStore = {`
`24`	`24`	`function adminFactory(name, score) {`
`25`	`25`	`const admin = userFactory(name, score);`
`26`	`26`	`admin.type = "Admin";`
`27`		`- Object.setPrototypeOf(admin, adminFunctionStore);`
	`27`	`+ admin.__proto__ = adminFunctionStore;`
`28`	`28`	`return admin;`
`29`	`29`	`}`
`30`	`30`