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-rw-r--r--01/Cargo.toml8
-rw-r--r--01/src/main.rs8
-rw-r--r--Cargo.lock12
-rw-r--r--Cargo.toml5
-rw-r--r--lib/Cargo.toml7
-rw-r--r--lib/src/error.rs30
-rw-r--r--lib/src/lib.rs11
-rw-r--r--lib/src/prelude.rs4
8 files changed, 85 insertions, 0 deletions
diff --git a/01/Cargo.toml b/01/Cargo.toml
new file mode 100644
index 0000000..e9379e7
--- /dev/null
+++ b/01/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "advent_01"
+version = "0.1.0"
+authors = ["Irene Knapp <ireneista@gmail.com>"]
+edition = "2018"
+
+[dependencies]
+advent_lib = { path = "../lib" }
diff --git a/01/src/main.rs b/01/src/main.rs
new file mode 100644
index 0000000..480e6db
--- /dev/null
+++ b/01/src/main.rs
@@ -0,0 +1,8 @@
+use advent_lib::prelude::*;
+
+
+fn main() -> Result<()> {
+  advent_lib::greeting()?;
+
+  Ok(())
+}
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..494a001
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,12 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "advent_01"
+version = "0.1.0"
+dependencies = [
+ "advent_lib",
+]
+
+[[package]]
+name = "advent_lib"
+version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..2446b10
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,5 @@
+[workspace]
+members = [
+  "lib",
+  "01",
+]
diff --git a/lib/Cargo.toml b/lib/Cargo.toml
new file mode 100644
index 0000000..f0a0859
--- /dev/null
+++ b/lib/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "advent_lib"
+version = "0.1.0"
+authors = ["Irene Knapp <ireneista@gmail.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/lib/src/error.rs b/lib/src/error.rs
new file mode 100644
index 0000000..cd4a760
--- /dev/null
+++ b/lib/src/error.rs
@@ -0,0 +1,30 @@
+#[derive(Debug)]
+pub enum Error {
+    IO(std::io::Error),
+}
+
+impl std::error::Error for Error { }
+
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Error::IO(e) => e.fmt(f),
+        }
+    }
+}
+
+impl std::cmp::PartialEq for Error {
+    fn eq(&self, other: &Self) -> bool {
+        match (self, other) {
+            (Error::IO(_), Error::IO(_)) =>
+                false,
+        }
+    }
+}
+
+impl From<std::io::Error> for Error {
+    fn from(e: std::io::Error) -> Error {
+        Error::IO(e)
+    }
+}
+
diff --git a/lib/src/lib.rs b/lib/src/lib.rs
new file mode 100644
index 0000000..b198f10
--- /dev/null
+++ b/lib/src/lib.rs
@@ -0,0 +1,11 @@
+pub mod error;
+pub mod prelude;
+
+pub use crate::prelude::Result;
+
+
+pub fn greeting() -> Result<()> {
+  println!("Hello, Irenes!");
+
+  Ok(())
+}
diff --git a/lib/src/prelude.rs b/lib/src/prelude.rs
new file mode 100644
index 0000000..a4e81eb
--- /dev/null
+++ b/lib/src/prelude.rs
@@ -0,0 +1,4 @@
+use crate::error::Error;
+
+pub type Result<T> = std::result::Result<T, Error>;
+