Merge branch 'master' of https://github.com/sunface/rust-by-practice into editing

Readme.md

@@ -17,7 +17,7 @@
 [![LICENSE](https://img.shields.io/badge/license-CC_BY_4.0-green?style=flat)](https://github.com/sunface/rust-by-practice/blob/master/LICENSE)
 </div>
 
-This book was designed for easily diving into and get skilled with Rust, and it's very easy to use: All you need to do is to make each exercise compile without ERRORS and Panics !
+This book was designed for easily diving into and getting skilled with Rust It's very easy to use. All you need to do is to make each exercise compile without ERRORS and Panics!
 
 
 ## Reading online

en/src/variables.md

@@ -99,7 +99,7 @@ fn main() {
 ```
 
 ### Unused variables
-1. Fix the warning below with :
+7. Fix the warning below with :
 
 - 🌟  Only one solution
 - 🌟🌟  Two distinct solutions

solutions/basic-types/functions.md

@@ -52,7 +52,7 @@ fn never_return() -> ! {
     // implement this function, don't modify fn signatures
     loop {
         println!("I return nothing");
-        // sleeping for 1 second to avoid exhausting the cpu resoucre
+        // sleeping for 1 second to avoid exhausting the cpu resource
         thread::sleep(time::Duration::from_secs(1))
     }
 }

zh-CN/src/basic-types/functions.md

@@ -86,7 +86,7 @@ fn main() {
         }
     };
 
-    println!("Excercise Failed if printing out this line!");
+    println!("Exercise Failed if printing out this line!");
 }
 ```
 

zh-CN/src/why-exercise.md

@@ -26,7 +26,10 @@
 $ cargo install mdbook
 $ cd rust-by-practice && mdbook serve 
 ```
-
+在本地win 10或者linux服务器上运行时，应当使用 -n 参数指定mdbook服务所监听的IP地址（-p 参数指定服务监听的端口，不指定则为默认的3000），以win 10本地运行为例：
+```shell
+$ mdbook serve -p 8888 -n 127.0.0.1
+```
 ## 特性
 
 部分示例和习题借鉴了 [Rust By Example](https://github.com/rust-lang/rust-by-example), 书中的示例真的非常棒！