Alice Ryhl

RFC: Pass pointers to const in assembly

Alice Ryhl — Wed, 05 Nov 2025 00:00:00 +0000
The const</code> operand to asm!</code> and global_asm!</code> currently only accepts integers. Change it to also accept pointer values. The value must be computed during const evaluation. The operand expands to the name of the symbol that the pointer references, plus an integer offset when necessary.</p>


In-place initialization
Alice Ryhl — Sat, 07 Jun 2025 00:00:00 +0000
This article was originally published on HackMD</a>. It is part of the work that
started the in-place initialization</a> Rust project goal.</p>


RFC: Target Modifiers
Alice Ryhl — Thu, 13 Feb 2025 00:00:00 +0000
This RFC introduces the concept of "target modifiers," flags that can cause unsoundness if compilation units disagree on them. We propose failing the build if rustc</code> detects disjoint target modifier sets between units, with an escape hatch (-Cunsafe-allow-abi-mismatch</code>) available. This RFC does not stabilize any specific modifiers but establishes the framework for handling them.</p>


RFC: #[derive(SmartPointer)]
Alice Ryhl — Thu, 11 Jul 2024 00:00:00 +0000
Make it possible to define custom smart pointers that work with trait objects.
For now, it will only be possible to do this using a derive macro, as we do not
stabilize the underlying traits.</p>


Setting up Binder for the future
Alice Ryhl — Wed, 01 Nov 2023 00:00:00 +0000
We're generally not proponents of rewrites (nasty uncomfortable things
that make you late for dinner!). So why rewrite Binder?</p>


Actors with Tokio
Alice Ryhl — Sat, 13 Feb 2021 00:00:00 +0000
This article is about building actors with Tokio directly, without using any
actor libraries such as Actix. This turns out to be rather easy to do, however
there are some details you should be aware of:</p>

Where to put the tokio::spawn</code> call.</li>
Struct with run</code> method vs bare function.</li>
Handles to the actor.</li>
Backpressure and bounded channels.</li>
Graceful shutdown.</li>
</ol>
The techniques outlined in this article should work with any executor, but for
simplicity we will only talk about Tokio.  There is some overlap with the
spawning</a> and channel chapters</a> from the Tokio tutorial, and I recommend also
reading those chapters.</p>


Async: What is blocking?
Alice Ryhl — Mon, 21 Dec 2020 00:00:00 +0000
The async/await feature in Rust is implemented using a mechanism known as cooperative
scheduling, and this has some important consequences for people who write asynchronous
Rust code.</p>
The intended audience of this blog post is new users of async Rust. I will be using the
Tokio</a> runtime for the examples, but the points raised here apply to any asynchronous
runtime.</p>
If you remember only one thing from this article, this should be it:</p>

Async code should never spend a long time without reaching an .await</code>.</p>
</blockquote>


Temporarily opt-in to shared mutation
Alice Ryhl — Sat, 15 Aug 2020 00:00:00 +0000
The purpose of this blog post is to celebrate the anniversary of two really neat methods
on the Cell</code></a> type:</p>

Cell::from_mut</code></a> This method turns a &mut T</code> into a &Cell<T></code>.</li>
Cell::as_slice_of_cells</code></a> This method turns a &Cell<[T]></code> into a &[Cell<T>]</code>.</li>
</ul>
Both methods were released in version 1.37.0</a> of Rust, exactly one year ago
from the date this post was published.</p>


Backblaze B2 Rust library
Alice Ryhl — Tue, 27 Jun 2017 00:00:00 +0000
This page functions as a home page for my rust library backblaze-b2</code>. Here are some
links to the project:</p>

crates.io</a></li>
Documentation</a></li>
Git repository</a></li>
</ul>


The Game of Life on a PCB
Alice Ryhl — Sun, 18 Dec 2016 00:00:00 +0000
I've created a printed circuit board (PCB) that simulates the game of life on a
5 by 5 LED grid, and can be remote controlled with Bluetooth.  The project was
created in collaboration with another student as a school project.  Here is a video of
the finished product:</p>


Fractals on the Riemann Sphere
Alice Ryhl — Tue, 06 Dec 2016 00:00:00 +0000
In order to investigate the behaviour of Newton Fractals</a> at
infinity, I've plotted Newton Fractals on the Riemann sphere. Here's an
animated video of a Newton Fractal plotted on the Riemann sphere using
YouTube's 360° video feature:</p>


Introduction to Newton Fractals
Alice Ryhl — Sun, 30 Oct 2016 00:00:00 +0000
When I try to learn a new programming language, I don't write a hello world. Instead, I
write a generator of newton fractals. Here's an example of a newton fractal:</p>