On Fri, Jun 7, 2013 at 12:21 AM, Tim Chevalier <catamorph...@gmail.com> wrote: > Hi all, > > I'm currently working on slides for a Rust tutorial, that I'm going to > be presenting at Open Source Bridge in Portland in two weeks. I wanted > the tutorial to be driven by examples from real code, but I've had a > hard time finding examples that are both relevant, and self-contained > enough to use in a talk. I specified that I expect the audience to > know how to program in some language and to be at least a little bit > familiar with C, so I'm assuming relatively little about their > knowledge. I'm certainly not assuming that they have already looked at > Rust. > > I'd like to have an extended example to illustrate borrowed pointers, > and another (can be separate or related) to illustrate traits. I've > done a fair amount of looking through Servo; Patrick's sprocketnes and > fempeg projects; and the Rust standard libraries. The first three seem > to make relatively little use of traits (and many of the traits that > are there seem to be collections of methods rather than representing > concepts that could be described more abstractly). Of course, borrowed > pointers are everywhere, but it's hard for me to say what is a good, > self-contained example for them. In the current draft of my talk, I'm > using the Container and Map traits and the HashMap implementation from > the standard library to illustrate both traits and borrowed pointers. > I'm okay with keeping it that way, but I'd love to use a less > textbook-y example that shows off what Rust can do. I had hoped some > of the test cases under bench/ might be good for this, but many of > them are written in fairly old-style Rust. > > Thanks in advance, and I'll certainly acknowledge in the talk anybody > who points me to a good example. > > Cheers, > Tim
The Map trait is a bit ugly because it's sorely in need of default methods to reduce the burden on implementations. I think the Iterator trait in the `std::iterator` module is a great example, because it's a simple trait and it's easy to demonstrate implementations and adaptors for it. It's also a nice way of showing off the lifetime system because with owned containers you can't invalidate the iterators. I don't think there are many other languages able to represent something like statically freezable mutable containers. _______________________________________________ Rust-dev mailing list Rust-dev@mozilla.org https://mail.mozilla.org/listinfo/rust-dev
