correct 2.21 code mistakes

2014-06-14 22:33:34 +08:00
parent df9d6bd803
commit 974e8c59b0
1 changed files with 1 additions and 1 deletions
--- a/source/chapter2/21_Protocols.md
+++ b/source/chapter2/21_Protocols.md
@ -340,7 +340,7 @@ class DiceGameTracker: DiceGameDelegate {
 `DiceGameTracker`的运行情况，如下所示：

 ```swift
-“let tracker = DiceGameTracker()
+let tracker = DiceGameTracker()
 let game = SnakesAndLadders()
 game.delegate = tracker
 game.play()