added day 11, fixed edition

Author: jsoverson

Cargo.lock

@@ -47,3 +47,14 @@ Structs
 
 - `ts-node javascript/day-8/src/structs.ts`
 - `cargo run -p day-8-structs`
+
+### Day 9
+
+### Day 10
+
+### Day 11
+
+Modules
+
+- `cargo run -p day-11-modules --bin nested-submodules`
+- `cargo run -p day-11-traffic-light`

README.md

@@ -1,7 +1,7 @@
 [package]
 name = "day-10-traits"
 version = "0.0.0"
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

crates/day-10/traits/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "day-11-modules"
+version = "0.0.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+enum_dispatch = "0.3.7"
+
+[[bin]]
+name = "nested-submodules"
+test = false
+bench = false
+path = "src/nested-submodules.rs"

crates/day-11/modules/Cargo.toml

@@ -0,0 +1,13 @@
+fn main() {
+ my_module::print(my_module::submodule::MSG);
+}
+
+mod my_module {
+ pub fn print(msg: &str) {
+ println!("{}", msg);
+ }
+
+ pub mod submodule {
+ pub const MSG: &str = "Hello world!";
+ }
+}

crates/day-11/modules/src/nested-submodules.rs

@@ -0,0 +1,9 @@
+[package]
+name = "day-11-traffic-light"
+version = "0.0.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+enum_dispatch = "0.3.7"

crates/day-11/traffic-light/Cargo.toml

@@ -0,0 +1,7 @@
+pub(crate) mod house_light;
+pub(crate) mod traffic_light;
+
+pub(crate) trait Light {
+ fn get_name(&self) -> &str;
+ fn get_state(&self) -> &dyn std::fmt::Debug;
+}

crates/day-11/traffic-light/src/light.rs

@@ -0,0 +1,30 @@
+use std::fmt::Display;
+
+use super::Light;
+
+impl Light for HouseLight {
+ fn get_name(&self) -> &str {
+ "House light"
+ }
+
+ fn get_state(&self) -> &dyn std::fmt::Debug {
+ &self.on
+ }
+}
+
+#[derive(Debug)]
+pub(crate) struct HouseLight {
+ on: bool,
+}
+
+impl Display for HouseLight {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "Houselight is {}", if self.on { "on" } else { "off" })
+ }
+}
+
+impl HouseLight {
+ pub fn new() -> Self {
+ Self { on: false }
+ }
+}

crates/day-11/traffic-light/src/light/house_light.rs

@@ -0,0 +1,54 @@
+use std::fmt::Display;
+
+use super::Light;
+
+impl Light for TrafficLight {
+ fn get_name(&self) -> &str {
+ "Traffic light"
+ }
+
+ fn get_state(&self) -> &dyn std::fmt::Debug {
+ &self.color
+ }
+}
+
+impl std::fmt::Display for TrafficLight {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "Traffic light is {}", self.color)
+ }
+}
+
+#[derive(Debug)]
+pub(crate) struct TrafficLight {
+ color: TrafficLightColor,
+}
+
+impl TrafficLight {
+ pub fn new() -> Self {
+ Self {
+ color: TrafficLightColor::Red,
+ }
+ }
+
+ pub fn turn_green(&mut self) {
+ self.color = TrafficLightColor::Green
+ }
+}
+
+#[derive(Debug)]
+enum TrafficLightColor {
+ Red,
+ Yellow,
+ Green,
+}
+
+impl Display for TrafficLightColor {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ let color_string = match self {
+ TrafficLightColor::Green => "green",
+ TrafficLightColor::Red => "red",
+ TrafficLightColor::Yellow => "yellow",
+ };
+ write!(f, "{}", color_string)
+ }
+}

crates/day-11/traffic-light/src/light/traffic_light.rs

@@ -0,0 +1,17 @@
+use crate::light::house_light::HouseLight;
+use crate::light::traffic_light::TrafficLight;
+use crate::light::Light;
+
+mod light;
+
+fn main() {
+ let traffic_light = TrafficLight::new();
+ let house_light = HouseLight::new();
+
+ print_state(&traffic_light);
+ print_state(&house_light);
+}
+
+fn print_state(light: &impl Light) {
+ println!("{}'s state is : {:?}", light.get_name(), light.get_state());
+}