From 2c0beb56a4f49e9b7ef820e2420b44320ca1f8c2 Mon Sep 17 00:00:00 2001
From: Lukas Kalbertodt <lukas.kalbertodt@gmail.com>
Date: Wed, 30 Nov 2016 12:42:00 +0100
Subject: [PATCH] Add file from the lecture

---
 materialien/read.rs | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100755 materialien/read.rs

diff --git a/materialien/read.rs b/materialien/read.rs
new file mode 100755
index 0000000..df3616a
--- /dev/null
+++ b/materialien/read.rs
@@ -0,0 +1,28 @@
+use std::str::FromStr;
+use std::fmt::Display;
+
+fn main() {
+    // let x = read::<usize>();
+    let x: usize = read();
+    println!("{}", x);
+
+}
+
+fn read<T>() -> T
+    where T: FromStr,
+          T::Err: Display
+{
+    use std::io;
+
+    loop {
+        let mut s = String::new();
+        io::stdin()
+            .read_line(&mut s)
+            .expect("unexpected io error");
+
+        match s.trim_right().parse() {
+            Ok(value) => return value,
+            Err(e) => println!("error: {}", e),
+        }
+    }
+}