add: 限定一下调用rust playground的版本, close #160

3 years ago · f02403ffec
parent 12dc9fda9d
commit f02403ffec
1 changed files with 2 additions and 0 deletions
--- a/book/book.toml
+++ b/book/book.toml
@ -19,3 +19,5 @@ line-numbers = true
 enable = true
 level = 2

+[rust]
+edition = "2021"   #在线运行用2021版本的