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The BEAM needs an APL-y language
One like, one unpopular opinion is one of them top Twitter games, innit?
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Programming Languages
The most popular blog posts about programming languages on Hacker News. 3,709 posts.
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Common Lisp as a Scripting Language, 2015 Edition
The first computer I used had about 2KB of RAM. The other day, I compiled a 2KB Common Lisp script into a 16MB executable to get its startup (and total execution) time down from 2s to subjectively instantaneous — and that didn't bother me the least, for my current computer has 8GB of working memory…
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Cargo's next few years
The Cargo team have been thinking about and discussing long-term plans for Cargo. In this post I'll talk about what we hope Cargo will look like around the time of the next edition (assuming there is another edition and that it happens in about three years, neither of which is
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QBE – Compiler Backend – 1.3
QBE 1.3 took a while to cook, but it is the most significant release since 1.0 with around 7k new lines of code and 1.5k deleted ones. In addition to the usual bug fixes, QBE gained a new and original IL matching algorithm, new optimizations from Roland Paterson-Jones, Scott Graham added support for the Windows ABI…
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Ways to generate SSA
Static Single Assignment is a program representation where each “variable” (though this term can be misleading) is assigned exactly once. Mostly the variables aren’t variables at all, but instead names for values—for expressions. SSA is used a lot in compilers. See this lesson from Cornell for converting Bril to SSA…
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Top-Down LR Parsing
This semester, I am teaching Compilers , and I'm quite happy with how I covered parsing this year. Specifically, I taught students to build a top-down LR parser and it seemed to go relatively well.
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Fixing left and mutual recursions in grammars
Left & Mutual Recursion Mitigation
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I got the GNU Modula-2 compiler working on OpenBSD
When it rains it pours. After making a splash with D , 1 I remembered that some time ago I began an attempt to bring the GNU Modula-2 compiler to OpenBSD . Because why not? Modula-2 is a language that exists and has compiler implementations. I guess my goal is to bring all the languages and compilers to OpenBSD. And…
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Exploring PDP-1 Lisp (1960)
Introduction to Lisp programming on a PDP-1, with a hands-on practical focus
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Django and Python 3
About 18 months ago I blogged about Django and Python 3, I gave the official roadmap. Not a lot has changed since then unfortunately, we’ve dropped 2.3 entirely, 2.4 is on it’s way out, but there’s no 3.X support in core. One fun thing has changed though: I get to help set the roadmap, which is a) cool, b) means the…
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Python internals: how callables work
[The Python version described in this article is 3.x, more specifically - the 3.3 alpha release of CPython.]
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Your language sucks
As a result of work I've been doing for illumos , I've recently gotten re-engaged with internationalization, and the support for this in li...
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Perl 6's given: switch on steroids
Sometimes the best features of Perl — and even more so of Perl 6 — are found by asking yourself, “I wonder if this’ll work?” and then findin...
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On calculating Fibonacci numbers in C
A few months ago Evan Miller wrote an essay called The Mathematical Hacker . While an interesting post he does make a mistake when he gives ...
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Union Types in Flow and Reason
Union types are powerful yet often overlooked. At work, I've been using Flow which thankfully supports union types. But as I've refactored more of our code to use union types, I've noticed that our bundle size has been steadily increasing!
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Compiler Design in C
Compiler Design in C Download a copy! My book Compiler Design in C is now, unfortunately, out of print. You can download a complete copy, with the above button (pdf 19.1Mb OCR/Searchable—thanks to Marvin Hernández for adding the OCR). If you don’t want to print it out (the book is 984 pages long), you can…
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R programming for those coming from other languages
Things a programmer coming from another language needs to know about R, especially those things that might be most surprising
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Rust for JavaScript Developers – Pattern Matching and Enums
Part 4 covers pattern matching, destructuring, and enums
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Ruby's private keyword is weird
Ruby's `private` keyword means something different compared to basically all other object-oriented languages. Most other languages don't even have a feature matching what Ruby calls `private`, but incredibly, Scala does, which it calls `protected[this]` (meaning
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Tyre – Typed regular expressions
I’m happy to announce the release of Tyre, a library for Typed Regular Expressions.
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Translating a C++ parser to Haskell
nix-derivation 1.0 announcement post
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Introduction to Golang Preemption Mechanisms
A short explanation of what is preemption and how it works