From d14aedb7728f0019cd30c2ca8ecbba8e92116e9b Mon Sep 17 00:00:00 2001
From: Min-Hsuan Hung <poxuan33@gmail.com>
Date: Mon, 3 Sep 2018 08:23:47 +0000
Subject: [PATCH] Done.

---
 index.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/index.js b/index.js
index e69de29bb..7afe2ddd2 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,21 @@
+var recipes = {key : "value"}
+
+function updateObjectWithKeyAndValue(object, key, value){
+  return Object.assign({recipes}, object, {[key] : value})
+}
+
+function destructivelyUpdateObjectWithKeyAndValue(object, key, value){
+  object[key] = value;
+  return object;
+}
+
+function deleteFromObjectByKey(object, key){
+   var newObject = Object.assign({}, object);
+   delete newObject[key];
+  return newObject;
+}
+
+function destructivelyDeleteFromObjectByKey(object, key){
+  delete object[key]
+  return object
+}