From 88795664c5ff1980f41bfa39f853cef12f60e92e Mon Sep 17 00:00:00 2001
From: Cory Forsyth <cory.forsyth@gmail.com>
Date: Mon, 2 Dec 2019 16:57:13 -0500
Subject: [PATCH] Return value of `findIndex` is `Optional<Int>`

---
 swift.html.markdown | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/swift.html.markdown b/swift.html.markdown
index 1f9fe897..8c1a7755 100644
--- a/swift.html.markdown
+++ b/swift.html.markdown
@@ -904,7 +904,7 @@ func findIndex<T: Equatable>(array: [T], valueToFind: T) -> Int? {
     }
     return nil
 }
-findIndex(array: [1, 2, 3, 4], valueToFind: 3) // 2
+findIndex(array: [1, 2, 3, 4], valueToFind: 3) // Optional(2)
 
 // You can extend types with generics as well
 extension Array where Array.Element == Int {