X-Git-Url: https://git.ralfj.de/rust-101.git/blobdiff_plain/5baae0ea037ed642b7fe8975fb3004b29827d5b1..3449141636aeba89b2b768c8362a15fdd76c0a94:/src/main.rs

diff --git a/src/main.rs b/src/main.rs
index 1317856..8fbc933 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,11 +1,10 @@
 // Welcome to Rust-101
 // ===================
 // 
-// This is [Rust-101](https://www.ralfj.de/projects/rust-101/), a small *work-in-progress*
-// tutorial for the [Rust language](http://www.rust-lang.org/).
-// It is intended to be an interactive, hands-on course: I believe the only way to
-// *really* learn a language is to write code in it, so you should be coding during
-// the course.
+// This is [Rust-101](https://www.ralfj.de/projects/rust-101/), a small tutorial for
+// the [Rust language](https://www.rust-lang.org/). It is intended to be an interactive,
+// hands-on course: I believe the only way to *really* learn a language is to write code
+// in it, so you should be coding during the course.
 // 
 // If you have any questions that are not answered here, check out the "Additional Resources"
 // below. In particular, the IRC channel is filled with awesome people willing to help you! I spent
@@ -18,48 +17,44 @@
 // ---------
 // 
 // When you got here, I am kind of assuming that you already decided to give Rust at
-// least a look, so that I don't have to do much convincing here ;-) . But just in
+// least a look, so that I don't have to do much convincing here. But just in
 // case, here's why I think Rust is worth learning:<br/>
 // At this time, Rust is a language with a pretty unique set of goals. Rust aims to
 // achieve C++-style control over memory and execution behavior (like, static vs. dynamic
 // dispatch), which makes it possible to construct abstractions that carry no run-time
 // cost. This is combined with the comfort of high-level functional languages and guaranteed
-// safety (as in, the program will not crash). The vast majority of existing
-// languages sacrifices one of these goals for the other. In particular, the
-// first requirement rules out a garbage collector: Rust can run "bare metal".
-// In fact, Rust rules out more classes of bugs than languages that achieve safety
-// with a GC: Besides dangling pointers and double-free, Rust also prevents issues
-// such as iterator invalidation and data races.
+// safety (as in, the program will not crash in uncontrolled ways). The vast majority of existing
+// languages sacrifices control for safety (for example, by enforcing the usage of
+// a garbage collector) or vice versa. Rust can run without dynamic allocation (i.e., without
+// a heap), and even without an operating system. In fact, Rust rules out more classes of bugs
+// than languages that achieve safety with a garbage collector: Besides dangling pointers and
+// double-free, Rust also prevents issues such as iterator invalidation and data races. Finally,
+// it cleans up behind you, and deallocates resources (memory, but also file descriptors and really
+// anything) when you don't need them anymore.
 // 
 // 
 // Getting started
 // ---------------
 // 
 // You will need to have Rust installed, of course. It is available for download on
-// [the Rust website](http://www.rust-lang.org/). Make sure you get at least version 1.2
-// (at the time of writing, that's the current beta release). More detailed installation
-// instructions are provided in [the second chapter of The Book](https://doc.rust-lang.org/stable/book/installing-rust.html).
+// [the Rust website](https://www.rust-lang.org/). Make sure you get at least version 1.2.
+// More detailed installation instructions are provided in
+// [the second chapter of The Book](https://doc.rust-lang.org/stable/book/installing-rust.html).
 // This will also install `cargo`, the tool responsible for building rust projects (or *crates*).
-
-// Next, fetch the Rust-101 source code from the [git repository](http://www.ralfj.de/git/rust-101.git)
+// 
+// Next, fetch the Rust-101 source code from the [git repository](https://www.ralfj.de/git/rust-101.git)
 // (also available [on GitHub](https://github.com/RalfJung/rust-101), and as a
 // [zip archive](https://github.com/RalfJung/rust-101/archive/master.zip) in case you don't have git installed).
 // 
 // There is a workspace prepared for you in the `workspace` folder. I suggest you copy this
-// folder somewhere else - that will make it much easier to later update the course without
-// overwriting your changes. Try `cargo build` in that new folder to check that compiling your workspace succeeds.
+// folder somewhere else. Try `cargo build` in that new folder to check that compiling your workspace succeeds.
 // (You can also execute it with `cargo run`, but you'll need to do some work before this will succeed.)
-// 
-// If you later want to update the course, do `git pull` (or re-download the zip archive).
-// Then copy the files from `workspace/src/` to your workspace that you did not yet work on. Definitely
-// copy `main.rs` to make sure all the new files are actually compiled. (Of course you can also
-// copy the rest, but that would replace all your hard work by the original files with all the holes!)
 
 // Course Content
 // --------------
 // 
 // Open `your-workspace/src/part00.rs` in your favorite editor, and follow the link below for
-// the explanations and exercises. Have fun!
+// the explanations and exercises. You are ready to start. Have fun!
 // 
 // ### Introduction
 //
@@ -85,7 +80,7 @@
 // * [Part 13: Concurrency, Arc, Send](part13.html)
 // * [Part 14: Slices, Arrays, External Dependencies](part14.html)
 // * [Part 15: Mutex, Interior Mutability (cont.), RwLock, Sync](part15.html)
-// * (to be continued)
+// * [Part 16: Unsafe Rust, Drop](part16.html)
 // 
 #![allow(dead_code, unused_imports, unused_variables, unused_mut, unreachable_code)]
 mod part00;
@@ -104,6 +99,7 @@ mod part12;
 mod part13;
 mod part14;
 mod part15;
+mod part16;
 
 // To actually run the code of some part (after filling in the blanks, if necessary), simply edit the `main`
 // function.
@@ -119,6 +115,8 @@ fn main() {
 // of the most interesting places here:
 // 
 // * [The Rust Book](https://doc.rust-lang.org/stable/book/)
+// * [The Rustonomicon](https://doc.rust-lang.org/nightly/nomicon/)
 // * [Rust by Example](http://rustbyexample.com/)
 // * The [Rust Subreddit](https://www.reddit.com/r/rust/)
-// * For the IRC channel and other forums, see the "Community" section of the [Rust Documentation index](http://doc.rust-lang.org/index.html)
+// * A [collection of links](https://github.com/ctjhoa/rust-learning) to blog posts, articles, videos, etc. for learning Rust.
+// * For the IRC channel and other forums, see the "Community" section of the [Rust Documentation index](https://doc.rust-lang.org/index.html)