ch7 done

ch7/backyard/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "backyard"
+version = "0.1.0"

ch7/backyard/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "backyard"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

ch7/backyard/src/garden.rs

@@ -0,0 +1 @@
+pub mod vegetables;

ch7/backyard/src/garden/vegetables.rs

@@ -0,0 +1,2 @@
+#[derive(Debug)]
+pub struct Asparagus {}

ch7/backyard/src/main.rs

@@ -0,0 +1,8 @@
+use crate::garden::vegetables::Asparagus;
+
+pub mod garden;
+
+fn main() {
+    let plant = Asparagus {};
+    println!("I'm growing: {plant:?}!");
+}

ch7/restaurant/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "restaurant"
+version = "0.1.0"

ch7/restaurant/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

ch7/restaurant/src/front_of_house.rs

@@ -0,0 +1,7 @@
+pub mod hosting;
+
+mod serving {
+    fn take_order() {}
+    fn serve_order() {}
+    fn take_payment() {}
+}

ch7/restaurant/src/front_of_house/hosting.rs

@@ -0,0 +1,2 @@
+pub fn add_to_waitlist() {}
+fn seat_at_table() {}

ch7/restaurant/src/lib.rs

@@ -0,0 +1,92 @@
+// modules allow control of the privacy of items.
+// Code private by default. Can choose to make
+// modules and items within them public.
+//
+// Identifiers in crate paths are followed by ::
+
+use std::collections::*;
+use std::fmt::Result;
+use std::io::Result as IoResult; // Can use this glob operator, not recommended tho. Typically only used in testing
+
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+// #[cfg(test)]
+// mod tests {
+//     use super::*;
+
+//     #[test]
+//     fn it_works() {
+//         let result = add(2, 2);
+//         assert_eq!(result, 4);
+//     }
+// }
+
+mod front_of_house;
+
+pub fn eat_at_restaurant() {
+    crate::front_of_house::hosting::add_to_waitlist();
+    front_of_house::hosting::add_to_waitlist();
+}
+
+// starting relative paths with super
+fn deliver_order() {}
+
+mod back_of_house {
+    fn fix_incorrect_order() {
+        cook_order();
+        super::deliver_order();
+    }
+
+    fn cook_order() {}
+
+    // if use pub before struct definition,
+    // make struct public but fields private
+    pub struct Breakfast {
+        pub toast: String,
+        seasonal_fruit: String,
+    }
+
+    impl Breakfast {
+        // because a single field is private, must provide a
+        // public associated function that constructs an instance
+        // of Breakfast
+        pub fn summer(toast: &str) -> Breakfast {
+            Breakfast {
+                toast: String::from(toast),
+                seasonal_fruit: String::from("peaches"),
+            }
+        }
+    }
+
+    // If make enum public, all of its variants are public.
+    pub enum Appetizer {
+        Soup,
+        Salad,
+    }
+}
+
+pub fn eat_at_restaurant_summer() {
+    let mut meal = back_of_house::Breakfast::summer("Rye");
+    meal.toast = String::from("Wheat");
+    println!("I'd like {} toast plz", meal.toast);
+
+    // This line fails because not seasonal_fruit is private
+    // meal.seasonal_fruit = String::from("blueberries");
+}
+
+pub fn eat_at_restaurant_appetizer() {
+    let order1 = back_of_house::Appetizer::Soup;
+    let order2 = back_of_house::Appetizer::Salad;
+}
+
+// The use statement only applies to the scope that it's in
+// use crate::front_of_house::hosting;
+
+// Can also prepend the above statement with pub to allow for re-exporting
+pub use crate::front_of_house::hosting;
+
+pub fn eat_at_restaurant_in_scope() {
+    hosting::add_to_waitlist();
+}