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Zero-downtime schema migrations in Postgres using Reshape
About six months back, I wrote a post on how to use views in Postgres to encapsulate tables and create a versioned interface to a database. At the end of the…
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The latest blog posts to take off on Hacker News. 14,540 posts.
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Problems once solved by a metaclass can be solved by __init_subclass__
David Beazley on Twitter said:
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Do Not Log
Almost every week I accidentally get into this logging argument. Here’s the problem: people tend to log different things and call it a best-practice. And I a...
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Know how your org works, or how to become a more effective engineer
A few months ago, exhausted by a constant stream of people perennially disappointed about reward structures at companies, I made what…
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The Pragmatic Pragmatic Programmer
The Pragmatic Pragmatic Programmer - Rogério Chaves
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Neural network from scratch
In this edition of Napkin Math, we’ll invoke the spirit of the Napkin Math series to establish a mental model for how a neural network works by building one from scratch. In a future issue we will do napkin math on performance, as establishing the first-principle understanding is plenty of ground to cover for today!
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How to mentor software engineers
Mentors should operate at three levels: goals, situations, and skills.
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Understanding UUIDs, ULIDs and string representations
What UUIDs and ULIDs are under the hood, and how to encode and use them.
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Programming in 1987 versus Today
Many developers today have no idea what programming was like in the 80s.
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Porting Rust's Std to Rustix
A blog by sunfishcode
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How programmers make sure that their software is correct
Our most important goal in writing software is that it be correct. The software must do what the programmer wants it to do. It must meet the needs of the user. In the business world, double-entry bookkeeping is the idea that transactions are recorded in at least two accounts (debit and credit). One of the … Continue…
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The joy of building a ray tracer, for fun, in Rust
TLDR? You can find the code and a bunch of examples on GitHub at dps/rust-raytracer. Over the holiday break, I decided to learn Rust. Rust is a modern systems programming language which has a really interesting type system. The type system can catch broad classes of common programming mistakes - e.g. ensuring memory…
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C Runtime Overhead (2015)
What do you do when libc is your bottleneck? If the total runtime of your process is under 10ms, most of this time (depending on your hardware) is spent waiting for the linker and C runtime to set things up. If you compare this to the Latency Numbers Every Programmer Should Know , it falls right above "disk seek" and…
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Write Like You Code
Similarities between good writing and good code.
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An Algorithm for Passing Programming Interviews (2020)
Over the past few years, I’ve interviewed with a dozen or so companies and have completed ~50 or so individual algorithm problems. I’m frequently given feedback that I did a great job at the algorithms problem. In this post, I’m going to share how exactly I approach algorithm problems. Thought Process A guiding…
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Notes on BPF and eBPF
Notes on BPF & eBPF
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Understanding the Power of Lisp (2020)
Notable programmers describe understanding and coding in LISP as a semi-religious experience. What gives the language this power?
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Assembly Nights
Over the last three months, I’ve developed an unusual little nighttime routine: after reading bedtime stories to the kids, I hop into bed and instead of reaching for a fiction book, I’m turning on my 14-year old Asus eeePC 701 (wikipedia.org) miniature laptop and writing x86 assembly language. This is turning out to…
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Almost Always Unsigned
Almost Always Unsigned # Written by Dale Weiler Twitter GitHub Last updated Saturday, January 1, 2022 The need for signed integer arithmetic is often misplaced as most integers never represent negative values within a program. The indexing of arrays and iteration count of a loop reflects this concept as well. There…
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Wrapping Up 2021. Leaving C++
2021 was not too kind to me. I discovered that I not only have OCD but OCPD, a personality disorder. If you’ve ever had a conversation with me where I just couldn’t let something go because it was wrong or incorrect and it bothered me, now you know why. I have, for better or worse, extremely high standards for…
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Updating the most influential book of the BASIC era
In a way, these two books are responsible for my entire professional career. With early computers, you didn’t boot up to a fancy schmancy desktop, or a screen full of apps you could easily poke and prod with your finger. No, those computers booted up to the command line.
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A single line of code made a 24-core server slower than a laptop
Imagine you wrote a program for a pleasingly parallel problem, where each thread does its own independent piece of work, and the threads don’t need to coordi...
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Some sanity for C and C++ development on Windows
A hard reality of C and C++ software development on Windows is that there has never been a good, native C or C++ standard library implementation for the platform. A standard library should abstract over the underlying host facilities in order to ease portable software development. On Windows, C and C++ is so poorly…
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Why is my Rust build so slow?
I’ve recently come back to an older project of mine (that powers this website), and as I did some maintenance work: upgrade to newer crates, upgrade to a newer rustc, I noticed that my build was ta...
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Sciter, the 5 MB Electron alternative, has switched to JavaScript
Without too much fanfares Sciter has officially transitioned from TIScript to JavaScript this week.
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