From b4ee64c7eee65d969fd5c5191478dcec8f059dec Mon Sep 17 00:00:00 2001
From: Jeffrey McNally-Dawes <jeffmcnallydawes@gmail.com>
Date: Thu, 25 Apr 2019 15:51:07 -0600
Subject: [PATCH] Add getOrNil extension to Array

This commit adds a convenience method for avoiding index of out bounds
runtime errors. If the index is invalid, you will safely be returned
nil.
---
 Extended/Classes/Array.swift | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Extended/Classes/Array.swift b/Extended/Classes/Array.swift
index fdd15c9..daa6c45 100644
--- a/Extended/Classes/Array.swift
+++ b/Extended/Classes/Array.swift
@@ -30,4 +30,15 @@ extension Array {
         }
         return array
     }
+    
+    
+    /// Retrieves the element at the given index or nil if the index is invalid
+    func getOrNil(_ index: Int) -> Element? {
+        if 0 ..< self.count ~= index {
+            return self[index]
+        } else {
+            return nil
+        }
+    }
+    
 }