Table of Arena Crates

For a technical discussion of using arenas for memory allocation with an example implementation, see gingerBill's Memory Allocation Strategies - Part 2: Linear/Arena Allocators

EventHelix writes:

This article will investigate how Rust handles dynamic dispatch using trait objects and vtables. We will also explore how the Rust compiler can sometimes optimize tail calls in the context of dynamic dispatch. Finally, we will examine how the vtable facilitates freeing memory when using trait objects wrapped in a Box.

Dmitry Grinberg writes:

go replan all your STM32H7 projects with RP2350, save money, headaches, and time. As a bonus, you’ll get an extra core to play with too! "But," you might say, "STMicro chips come with internal flash, while RP2350 still requires an external SPI chip to store the flash". Hold on to your hats... there are now RP2350 variants with built-in flash! They are called RP2354A nd RP2354B and they include 2MBytes of flash in-package. The pinouts are the same as the RP2350A/B, for a bonus! Why two pinouts? Because the "more GPIOs" dream also came true! There is now a variant with more GPIOS, available in an 80-pin package. That’s right! It is epic!

Read Why you should fall in love with the RP2350

As the first alpha version of COSMIC Epoch 1, it is incomplete. You’ll most certainly find bugs. Testing and bug reports are welcome and appreciated. New feature requests will be considered for Epoch 2, COSMIC’s second release.

COSMIC Epoch 1 (alpha 1) on the Pop!_OS 24.04 LTS alpha ISO files are available

Try COSMIC on other Linux distributions

Fedora - See instructions

NixOS - See instructions

Arch - See instructions

openSUSE - Coming soon

Serpent OS - See instructions

Redox OS - includes some COSMIC Components - See Progress

https://system76.com/cosmic

What issues or frustrations have you encountered in trying to use and set up Neovim in Windows 11?

I'm currently writing up my experience with installing, setting up, and using Neovim in Windows and would like to hear from others that have tried the same. What was annoying, difficult, or impossible in your experience?

Many devs dream of one day writing their own operating system. Ideally in their favorite language: Rust. For many of us, this dream remains just that: a dream.

Jeremy Soller from System76, however, didn't just contribute kernel code for Pop!_OS, but also started his own operating system, RedoxOS, which is completely written in Rust. One might get the impression that he likes to tinker with low-level code!

In this episode of Rust in Production, Jeremy talks about his journey. From getting hired as a kernel developer at Denver-based company System76 after looking at the job ad for 1 month and finally applying, to being the maintainer of not one but two operating systems, additional system tools, and the Rust-based Cosmic desktop. We'll talk about why it's hard to write correct C code even for exceptional developers like Jeremy and why Rust is so great for refactoring and sharing code across different levels of abstraction.

Listen to Rust in Production Podcast S02 E07

Many devs dream of one day writing their own operating system. Ideally in their favorite language: Rust. For many of us, this dream remains just that: a dream.

Jeremy Soller from System76, however, didn't just contribute kernel code for Pop!_OS, but also started his own operating system, RedoxOS, which is completely written in Rust. One might get the impression that he likes to tinker with low-level code!

In this episode of Rust in Production, Jeremy talks about his journey. From getting hired as a kernel developer at Denver-based company System76 after looking at the job ad for 1 month and finally applying, to being the maintainer of not one but two operating systems, additional system tools, and the Rust-based Cosmic desktop. We'll talk about why it's hard to write correct C code even for exceptional developers like Jeremy and why Rust is so great for refactoring and sharing code across different levels of abstraction.

Listen to Rust in Production Podcast S02 E07

Based on answers to the following question:

Which development environments did you use regularly over the past year, and which do you want to work with over the next year? Please check all that apply.

Neovim is the most admired code editor in the 2024 Stacked Overflow Developer Survey

Source: https://survey.stackoverflow.co/2024/technology#admired-and-desired-new-collab-tools-desire-admire

It's broader than a Neovim specific mapping, I've changed the system keyboard mapping of <Caps Lock> to <Esc> and <F9> to <Caps Lock>.

I think mapping <Caps Lock> to <Esc> isn't uncommon for Neovim users. But I like having <Caps Lock> available for non Neovim purposes.

I asked some LLM chatbots to give me some silly ideas to try. Below are a few of my favorite responses.

From Perplexity.ai

Six Degrees of Wikipedia: Creating a program that finds the shortest path between two random Wikipedia articles using graph traversal algorithms. This applies graph theory concepts to explore connections in a large knowledge base.

Emoji Encryption: Using hash tables and cryptographic algorithms to create an encryption system that converts text to emojis. This could be an interesting way to explore cryptography concepts in a fun, visual way.

From Gemini.google.com

Procrastination Station: This website creates increasingly elaborate and ridiculous tasks to distract you from what you actually need to do. Dishes? Nah, fold your socks into origami cranes!

Dramatic Password Validator: Forget boring error messages. This program rejects weak passwords with Shakespearean insults or movie villain monologues.

From Chatgpt.com

3. Time Travel Email Service: Build a data structure that allows you to send emails to yourself in the past, with time complexity considerations that are totally ignored because it’s time travel.

4. Mood-Driven Random Number Generator: Implement an algorithm that generates random numbers based on the mood of the user, using sentiment analysis on real-time facial expressions.

cross-posted from: https://programming.dev/post/16349359

July 2, 2024

Sylvain Kerkour writes:

Rust adoption is stagnating not because it's missing some feature pushed by programming language theory enthusiasts, but because of a lack of focus on solving the practical problems that developers are facing every day.

... no company outside of AWS is making SDKs for Rust ... it has no official HTTP library.

As a result of Rust's lack of official packages, even its core infrastructure components need to import hundreds of third-party crates.

• cargo imports over 400 crates.

• crates.io has over 500 transitive dependencies.

...the offical libsignal (from the Signal messaging app) uses 500 third-party packages.

... what is really inside these packages. It has been found last month that among the 999 most popular packages on crates.io, the content of around 20% of these doesn't even match the content of their Git repository.

...how I would do it (there may be better ways):

A stdx (for std eXtended) under the rust-lang organization containing the most-needed packages. ... to make it secure: all packages in stdx can only import packages from std or stdx. No third-party imports. No supply-chain risks.

[stdx packages to include, among others]:

gzip, hex, http, json, net, rand

Read Rust has a HUGE supply chain security problem

Submitter's note:

I find the author's writing style immature, sensationalist, and tiresome, but they raise a number of what appear to be solid points, some of which are highlighted above.

July 2, 2024

Sylvain Kerkour writes:

Rust adoption is stagnating not because it's missing some feature pushed by programming language theory enthusiasts, but because of a lack of focus on solving the practical problems that developers are facing every day.

... no company outside of AWS is making SDKs for Rust ... it has no official HTTP library.

As a result of Rust's lack of official packages, even its core infrastructure components need to import hundreds of third-party crates.

• cargo imports over 400 crates.

• crates.io has over 500 transitive dependencies.

...the offical libsignal (from the Signal messaging app) uses 500 third-party packages.

... what is really inside these packages. It has been found last month that among the 999 most popular packages on crates.io, the content of around 20% of these doesn't even match the content of their Git repository.

...how I would do it (there may be better ways):

A stdx (for std eXtended) under the rust-lang organization containing the most-needed packages. ... to make it secure: all packages in stdx can only import packages from std or stdx. No third-party imports. No supply-chain risks.

[stdx packages to include, among others]:

gzip, hex, http, json, net, rand

Read Rust has a HUGE supply chain security problem

Submitter's note:

I find the author's writing style immature, sensationalist, and tiresome, but they raise a number of what appear to be solid points, some of which are highlighted above.