Update string-slice.md

最后一个字节是4~
3 years ago · 2220a451c9
parent e09d94bb8c
commit 2220a451c9
1 changed files with 2 additions and 2 deletions
--- a/book/contents/basic/compound-type/string-slice.md
+++ b/book/contents/basic/compound-type/string-slice.md
@ -67,8 +67,8 @@ let s = String::from("hello");

 let len = s.len();

-let slice = &s[3..len];
-let slice = &s[3..];
+let slice = &s[4..len];
+let slice = &s[4..];
 ```

 你也可以截取完整的`String`切片：