19，Type Casting，for Swift 4.0

2017-09-22 20:21:59 +08:00
parent da73d25416
commit bfd072a14d
1 changed files with 3 additions and 0 deletions
--- a/source/chapter2/19_Type_Casting.md
+++ b/source/chapter2/19_Type_Casting.md
@ -15,6 +15,9 @@
 > 翻译+校对：[SketchK](https://github.com/SketchK) 2016-05-16  
 > 3.0.1，shanks，2016-11-13

+> 4.0
+> 校对：[kemchenj](https://kemchenj.github.io/) 2017-09-21
+
 本页包含内容：

 - [定义一个类层次作为例子](#defining_a_class_hierarchy_for_type_casting)