From 80cc58aebe53e06c24422110ac31cb7a927800dd Mon Sep 17 00:00:00 2001
From: sunface <cto@188.com>
Date: Mon, 14 Mar 2022 21:14:52 +0800
Subject: [PATCH] add practice projects

---
 practices/hello-package/.gitignore            |  1 +
 practices/hello-package/Cargo.lock            |  7 +++++++
 practices/hello-package/Cargo.toml            |  8 ++++++++
 practices/hello-package/Readme.md             | 20 +++++++++++++++++++
 practices/hello-package/src/back_of_house.rs  |  7 +++++++
 .../src/front_of_house/hosting.rs             |  6 ++++++
 .../hello-package/src/front_of_house/mod.rs   |  2 ++
 .../src/front_of_house/serving.rs             |  9 +++++++++
 practices/hello-package/src/lib.rs            | 12 +++++++++++
 practices/hello-package/src/main.rs           |  4 ++++
 10 files changed, 76 insertions(+)
 create mode 100644 practices/hello-package/.gitignore
 create mode 100644 practices/hello-package/Cargo.lock
 create mode 100644 practices/hello-package/Cargo.toml
 create mode 100644 practices/hello-package/Readme.md
 create mode 100644 practices/hello-package/src/back_of_house.rs
 create mode 100644 practices/hello-package/src/front_of_house/hosting.rs
 create mode 100644 practices/hello-package/src/front_of_house/mod.rs
 create mode 100644 practices/hello-package/src/front_of_house/serving.rs
 create mode 100644 practices/hello-package/src/lib.rs
 create mode 100644 practices/hello-package/src/main.rs

diff --git a/practices/hello-package/.gitignore b/practices/hello-package/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/practices/hello-package/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/practices/hello-package/Cargo.lock b/practices/hello-package/Cargo.lock
new file mode 100644
index 0000000..dbd6e7c
--- /dev/null
+++ b/practices/hello-package/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "hello-package"
+version = "0.1.0"
diff --git a/practices/hello-package/Cargo.toml b/practices/hello-package/Cargo.toml
new file mode 100644
index 0000000..0630563
--- /dev/null
+++ b/practices/hello-package/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "hello-package"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/practices/hello-package/Readme.md b/practices/hello-package/Readme.md
new file mode 100644
index 0000000..ce7a586
--- /dev/null
+++ b/practices/hello-package/Readme.md
@@ -0,0 +1,20 @@
+## Hello Package
+A practice project used in [Crate and Module](https://practice.rs/crate-module/crate.html) chapter.
+
+This project will guide us to create a package with a binary crate and several library crates in it.
+
+The project structure is as below:
+```shell
+.
+├── Cargo.lock
+├── Cargo.toml
+├── Readme.md
+├── src
+│   ├── back_of_house.rs
+│   ├── front_of_house
+│   │   ├── hosting.rs
+│   │   ├── mod.rs
+│   │   └── serving.rs
+│   ├── lib.rs
+│   └── main.rs
+```
\ No newline at end of file
diff --git a/practices/hello-package/src/back_of_house.rs b/practices/hello-package/src/back_of_house.rs
new file mode 100644
index 0000000..a996ea9
--- /dev/null
+++ b/practices/hello-package/src/back_of_house.rs
@@ -0,0 +1,7 @@
+use crate::front_of_house;
+pub fn fix_incorrect_order() {
+    cook_order();
+    front_of_house::serving::serve_order();
+}
+
+pub fn cook_order() {}
\ No newline at end of file
diff --git a/practices/hello-package/src/front_of_house/hosting.rs b/practices/hello-package/src/front_of_house/hosting.rs
new file mode 100644
index 0000000..f047f83
--- /dev/null
+++ b/practices/hello-package/src/front_of_house/hosting.rs
@@ -0,0 +1,6 @@
+pub fn add_to_waitlist() {}
+
+pub fn seat_at_table() -> String {
+    String::from("sit down please")
+}
+
diff --git a/practices/hello-package/src/front_of_house/mod.rs b/practices/hello-package/src/front_of_house/mod.rs
new file mode 100644
index 0000000..9a500d1
--- /dev/null
+++ b/practices/hello-package/src/front_of_house/mod.rs
@@ -0,0 +1,2 @@
+pub mod hosting;
+pub mod serving;
\ No newline at end of file
diff --git a/practices/hello-package/src/front_of_house/serving.rs b/practices/hello-package/src/front_of_house/serving.rs
new file mode 100644
index 0000000..129c8fa
--- /dev/null
+++ b/practices/hello-package/src/front_of_house/serving.rs
@@ -0,0 +1,9 @@
+pub fn take_order() {}
+
+pub fn serve_order() {}
+
+pub fn take_payment() {}
+
+// Maybe you don't want the guest hearing the your complaining about them
+// So just make it private
+fn complain() {} 
\ No newline at end of file
diff --git a/practices/hello-package/src/lib.rs b/practices/hello-package/src/lib.rs
new file mode 100644
index 0000000..00a6c73
--- /dev/null
+++ b/practices/hello-package/src/lib.rs
@@ -0,0 +1,12 @@
+mod front_of_house;
+mod back_of_house;
+
+pub use crate::front_of_house::hosting;
+
+pub fn eat_at_restaurant() -> String {
+    front_of_house::hosting::add_to_waitlist();
+    
+    back_of_house::cook_order();
+
+    String::from("yummy yummy!")
+}
diff --git a/practices/hello-package/src/main.rs b/practices/hello-package/src/main.rs
new file mode 100644
index 0000000..061775f
--- /dev/null
+++ b/practices/hello-package/src/main.rs
@@ -0,0 +1,4 @@
+fn main() {
+    assert_eq!(hello_package::hosting::seat_at_table(), "sit down please");
+    assert_eq!(hello_package::eat_at_restaurant(),"yummy yummy!");
+}