Add Array Prepend Extension Function

Author: emreozdil

codes/ArrayPrependExtensionFunction.swift

@@ -0,0 +1,10 @@
+// Array Prepend Extension Function
+
+extension Array {
+    mutating func prepend(_ newElement: Element) {
+        insert(newElement, at: 0)
+    }
+}
+
+[2, 3, 4, 5].prepend(1) // [1, 2, 3, 4, 5]
+["e", "l", "l", "o"].prepend("h") // ["h", "e", "l", "l", "o"]