Swift 3

Author: mrkbxt

Palindromes/Palindromes.playground/Contents.swift

@@ -2,7 +2,7 @@ import Cocoa
 
 public func palindromeCheck (text: String?) -> Bool {
   if let text = text {
-    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces())
+    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces()).lowercased()
     let length: Int = mutableText.characters.count
 
     guard length >= 1 else {

Palindromes/Palindromes.swift

@@ -2,7 +2,7 @@ import Cocoa
 
 public func palindromeCheck (text: String?) -> Bool {
   if let text = text {
-    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces())
+    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces()).lowercased()
     let length: Int = mutableText.characters.count
 
     guard length >= 1 else {

Palindromes/README.markdown

@@ -28,7 +28,7 @@ Here is a recursive implementation of this in Swift:
 ```swift
 func palindromeCheck (text: String?) -> Bool {
   if let text = text {
-    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces())
+    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces()).lowercased()
     let length: Int = mutableText.characters.count
 
     guard length >= 1 else {