Project W1(B)

Track7Dev · Track7Dev · commit 40506cf533d7 · 2017-09-09T02:59:25.000-04:00
-Arrays: Completed
-Class: Completed
-Closure: Completed
-ES6: Completed
-Objects: Completed
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -27,6 +27,7 @@
   },
   "dependencies": {
     "babel-preset-es2015": "^6.24.0",
-    "eslint-config-airbnb": "^14.1.0"
+    "eslint-config-airbnb": "^14.1.0",
+    "underscore": "^1.8.3"
   }
 }
diff --git a/src/objects.js b/src/objects.js
@@ -1,38 +1,57 @@
 // Complete the following underscore functions.
 // Reference http://underscorejs.org/ for examples.
 
-const keys = (obj) => {
+const keys = obj => Object.keys(obj);
   // Retrieve all the names of the object's properties.
   // Return the keys as strings in an array.
   // Based on http://underscorejs.org/#keys
-};
 
-const values = (obj) => {
+const values = obj => Object.values(obj);
   // Return all of the values of the object's own properties.
   // Ignore functions
   // http://underscorejs.org/#values
-};
 
 const mapObject = (obj, cb) => {
   // Like map for arrays, but for objects. Transform the value of each property in turn.
   // http://underscorejs.org/#mapObject
+  for (let i = 0; i < keys(obj).length; i++) {
+    obj[keys(obj)[i]] = cb(values(obj)[i]);
+  }
+  return obj;
 };
-
 const pairs = (obj) => {
   // Convert an object into a list of [key, value] pairs.
   // http://underscorejs.org/#pairs
+  const outArr = [];
+  for (let i = 0; i < keys(obj).length; i++) {
+    const subArr = [];
+    subArr.push(keys(obj)[i], values(obj)[i]);
+    outArr[i] = subArr;
+  }
+  return outArr;
 };
 
 const invert = (obj) => {
   // Returns a copy of the object where the keys have become the values and the values the keys.
   // Assume that all of the object's values will be unique and string serializable.
   // http://underscorejs.org/#invert
+  const newObj = {};
+  for (let i = 0; i < keys(obj).length; i++) {
+    newObj[values(obj)[i]] = keys(obj)[i];
+  }
+  return newObj;
 };
 
 const defaults = (obj, defaultProps) => {
   // Fill in undefined properties that match properties on the `defaultProps` parameter object.
   // Return `obj`.
   // http://underscorejs.org/#defaults
+  for (let i = 0; i < keys(defaultProps).length; i++) {
+    if (obj[keys(defaultProps)[i]] === undefined) {
+      obj[keys(defaultProps)[i]] = values(defaultProps)[i];
+    }
+  }
+  return obj;
 };
 
 /* eslint-enable no-unused-vars */

Original file line number	Diff line number	Diff line change
`@@ -27,6 +27,7 @@`
`27`	`27`	`},`
`28`	`28`	`"dependencies": {`
`29`	`29`	`"babel-preset-es2015": "^6.24.0",`
`30`		`- "eslint-config-airbnb": "^14.1.0"`
	`30`	`+ "eslint-config-airbnb": "^14.1.0",`
	`31`	`+ "underscore": "^1.8.3"`
`31`	`32`	`}`
`32`	`33`	`}`