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PEG Parsers
Some years ago someone asked whether it would make sense to switch Python to a PEG parser. (Or a PEG grammar; I don’t recall exactly what…
Topics /
Programming Languages
The most popular blog posts about programming languages on Hacker News. 235 posts.
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Modern garbage collection: Part 2
A look at what the newest generation of Java GCs can do
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Shell Completions in Rust
If you've ever hit the tab key while typing commands in the shell, you are familiar with the value of shell completions. Bash has some default completion behavior, which is why you can type hel<TAB> and end up with help . It is also possible to add additional completion scripts which define the completion behavior for…
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When FP? And When OOP? (2013)
Very roughly speaking, functional programming (“FP”) and object-oriented programming (“OOP”) have similar levels of expressive power and similar abilities to encapsulate programs into smaller parts that can be combined and recombined.
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Asynchronous Programming in Rust
Asynchronous programming in Rust continues to make exciting strides, including the upcoming stabilization of the futures API . But, while these core APIs make it possible to write async Rust code today, it's not easy: it's a far cry from the smoothness of synchronous code.
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Jumping Back and Forth
The order that our mind imagines is like a net, or like a ladder, built to attain something. But afterward you must throw the ladder away, because you discover that, even if it was useful, it was meaningless.
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The Road to Valhalla
The goal of Project Valhalla is to bring more flexible flattened data types to JVM-based languages, to bring the programming model back in line with the performance characteristics of modern hardware. The core feature is inline classes (known previously as value types ), but such a fundamental perturbation of the JVM…
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Developing a Statically Typed Programming Language (2017)
In this blog post we’ll go through a sample implementation of a type checker, interpreter and a transpiler for a basic purely functional programming language, which is based on the lambda calculus. We will do a “full-stack” programming language development by going through formal definition of the language’s syntax…
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Why async fn in traits are hard
After reading boat’s excellent post on asynchronous destructors , I thought it might be a good idea to write some about async fn in traits. Support for async fn in traits is probably the single most common feature request that I hear about. It’s also one of the more complex topics. So I thought it’d be nice to do a…
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Let's Build a Simple Interpreter. Part 14: Nested Scopes (2017)
Only dead fish go with the flow. As I promised in the last article, today we’re finally going to do a deep dive into the topic of scopes. This is what we’re going to learn today: We’re going to learn about scopes, why they are useful, and …
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C# 8: Switch expressions
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A PHP Compiler, a.k.a. the FFI Rabbit Hole
It’s no secret that I’m into building toy compilers and programming languages. Today I’m introducing something that’s not a toy (I hope). Today, I’m introducing php-compiler (among many other projects
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Racket for E-Commerce
I had originally shared a version of this post with a small, private mailing list, but then I figured there'd be no harm in sharing it with a larger audience so here it is.
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Logic Puzzles with Prolog (2017)
Solving Logic Puzzles with Prolog
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Clojure and Deps.edn: A basic guide
After a rather long break from programming and Clojure I decided give them another go. When it comes to managing Clojure projects, Leiningen is de-facto standard tool. Recently, Clojure CLI tools are becoming more and more popular, though. Switching to yet-another-build-tool doesn't have any pragmatic value, but it's…
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Lisp Macros, Delayed Evaluation and the Evolution of Smalltalk
At a recent Clojure Berlin Meetup , Veit Heller gave an interesting talk on Macros in Clojure. The meetup was very enjoyable, and the talk...
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Go Interfaces, the Tricky Parts
Does this Go snippet compile, and if not, why?
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NASM Tutorial (2018)
This tutorial will show you how to write assembly language programs on the x86-64 architecture.
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Programming Algorithms: A Crash Course in Lisp
The introductory post for this book, unexpectedly, received quite a lot of attention, which is nice since it prompted some questions, and on...
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Rust async-await status report 2
I wanted to give an update on the status of the “async-await foundations” working group. This post aims to cover three things:
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Clever Functional Design
An entry on some of the cleverest (and clearest) functional designs I've worked on, and how it came to be
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Lisp Badge – Self-contained ATmega1284 Lisp computer
This is a self-contained computer with its own display and keyboard, based on an ATmega1284, that you can program in the high-level language Lisp:
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Uniform Structured Syntax, Metaprogramming and Run-Time Compilation
Real world example where uniform syntax enables unthinkable solution