Merge pull request kodecocodes#191 from chris-pilcher/palindromes-swift3

Palindromes swift3

Author: Chris Pilcher

Palindromes/Palindromes.playground/Contents.swift

@@ -1,8 +1,8 @@
 import Cocoa
 
-public func palindromeCheck (text: String?) -> Bool {
+public func palindromeCheck(text: String?) -> Bool {
   if let text = text {
-    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces()).lowercased()
+    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces).lowercased()
     let length: Int = mutableText.characters.count
 
     guard length >= 1 else {

Palindromes/Palindromes.swift

@@ -1,8 +1,8 @@
 import Cocoa
 
-public func palindromeCheck (text: String?) -> Bool {
+public func palindromeCheck(text: String?) -> Bool {
   if let text = text {
-    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces()).lowercased()
+    let mutableText = text.trimmingCharacters(in: NSCharacterSet.whitespaces).lowercased()
     let length: Int = mutableText.characters.count
 
     guard length >= 1 else {