From 4a466a9531f6351ce140a82cdf2f2912bfd8b997 Mon Sep 17 00:00:00 2001
From: Max Ehrlicher-Schmidt <maxes2000@t-online.de>
Date: Wed, 23 Sep 2020 10:30:12 +0200
Subject: [PATCH] Add deepcopy function

---
 src/app/services/deepCopy.ts | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 src/app/services/deepCopy.ts

diff --git a/src/app/services/deepCopy.ts b/src/app/services/deepCopy.ts
new file mode 100644
index 0000000..3f8e21a
--- /dev/null
+++ b/src/app/services/deepCopy.ts
@@ -0,0 +1,33 @@
+export function deepCopy(obj) {
+    var copy: any;
+
+    // Handle the 3 simple types, and null or undefined
+    if (null == obj || "object" != typeof obj) return obj;
+
+    // Handle Date
+    if (obj instanceof Date) {
+        copy = new Date();
+        copy.setTime(obj.getTime());
+        return copy;
+    }
+
+    // Handle Array
+    if (obj instanceof Array) {
+        copy = [];
+        for (var i = 0, len = obj.length; i < len; i++) {
+            copy[i] = deepCopy(obj[i]);
+        }
+        return copy;
+    }
+
+    // Handle Object
+    if (obj instanceof Object) {
+        copy = {};
+        for (var attr in obj) {
+            if (obj.hasOwnProperty(attr)) copy[attr] = deepCopy(obj[attr]);
+        }
+        return copy;
+    }
+
+    throw new Error("Unable to copy obj! Its type isn't supported.");
+}
\ No newline at end of file