+++ /dev/null
-// Rust-101, Part 03: Input
-// ========================
-
-
-// I/O is provided by the module `std::io`, so we first have import that with `use`.
-// We also import the I/O *prelude*, which makes a bunch of commonly used I/O stuff
-// directly available.
-use std::io::prelude::*;
-use std::io;
-
-fn read_vec() -> Vec<i32> {
- let mut vec: Vec<i32> = Vec::<i32>::new();
- // The central handle to the standard input is made available by the function `io::stdin`.
- let stdin = io::stdin();
- println!("Enter a list of numbers, one per line. End with Ctrl-D (Linux) or Ctrl-Z (Windows).");
- for line in stdin.lock().lines() {
- // Rust's type for (dynamic, growable) strings is `String`. However, our variable `line`
- // here is not yet of that type: It has type `io::Result<String>`.
-
- // I chose the same name (`line`) for the new variable to ensure that I will never, accidentally,
- // access the "old" `line` again.
- let line = line.unwrap();
- // Now that we have our `String`, we want to make it an `i32`.
-
- match line.trim().parse::<i32>() {
- Ok(num) => {
- unimplemented!()
- },
- // We don't care about the particular error, so we ignore it with a `_`.
- Err(_) => {
- unimplemented!()
- },
- }
- }
-
- vec
-}
-
-
-// For the rest of the code, we just re-use part 02 by importing it with `use`.
-use part02::{SomethingOrNothing,Something,Nothing,vec_min};
-
-// If you update your `main.rs` to use part 03, `cargo run` should now ask you for some numbers,
-// and tell you the minimum. Neat, isn't it?
-pub fn main() {
- let vec = read_vec();
- unimplemented!()
-}
-
-// **Exercise 03.1**: Define a trait `Print` to write a generic version of `SomethingOrNothing::print`.
-// Implement that trait for `i32`, and change the code above to use it.
-// I will again provide a skeleton for this solution. It also shows how to attach bounds to generic
-// implementations (just compare it to the `impl` block from the previous exercise).
-// You can read this as "For all types `T` satisfying the `Print` trait, I provide an implementation
-// for `SomethingOrNothing<T>`".
-//
-// Notice that I called the function on `SomethingOrNothing` `print2` to disambiguate from the `print` defined previously.
-//
-// *Hint*: There is a macro `print!` for printing without appending a newline.
-pub trait Print {
- /* Add things here */
-}
-impl<T: Print> SomethingOrNothing<T> {
- fn print2(self) {
- unimplemented!()
- }
-}
-
-// **Exercise 03.2**: Building on exercise 02.2, implement all the things you need on `f32` to make your
-// program work with floating-point numbers.
-