X-Git-Url: https://git.ralfj.de/rust-101.git/blobdiff_plain/2d40516a8393db1f27bb822ff95c71a1a9c82537..ab7f9b241429bd675b437d2437799de75d2f409b:/workspace/src/part03.rs

diff --git a/workspace/src/part03.rs b/workspace/src/part03.rs
deleted file mode 100644
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--- a/workspace/src/part03.rs
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-// 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.
-