Initial Rust skeleton

rust/.gitignore

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+target

rust/Cargo.lock

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+[root]
+name = "advent_of_code"
+version = "0.1.0"
+

rust/Cargo.toml

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+[package]
+name = "advent_of_code"
+version = "0.1.0"
+authors = ["Alpha Chen <alpha.chen@gmail.com>"]

rust/src/lib.rs

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+use std::io::Error;
+
+pub trait Day {
+    fn new(String) -> Self;
+    fn solve(self) -> Result<i32, Error>;
+}
+
+pub struct Day01 {
+    input: String,
+}
+
+impl Day for Day01 {
+    fn new(input: String) -> Day01 {
+        Day01 { input: input }
+    }
+
+    fn solve(self) -> Result<i32, Error> {
+        Ok(1)
+    }
+}

rust/src/main.rs

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+extern crate advent_of_code;
+use advent_of_code::*;
+
+fn main() {
+    let day = Day01::new("".to_string());
+    match day.solve() {
+        Ok(n) => println!("{}", n),
+        Err(e) => println!("{}", e),
+    }
+}