Every blog post that took off on Hacker News, ranked by the votes of its best submission. 3,709 posts.
One of Common Lisp’s more advanced features is its condition handling system, which is a powerful generalisation of other languages’ exception handling systems. I first became aware of condition handling from Peter Seibel’s Practical Common Lisp , chapter 19 . But if I’m honest I’ve only very recently understood what…
Topics : monads, Common Lisp, functional programming Author : Marijn Haverbeke Date : July 11th 2008
I saw a project a couple weeks back which allows writing and running Crystal methods inline inside a Ruby file. It’s a neat project, and I don’t want to take away from it but something in the README example looked off to me. require 'crystalruby' require 'benchmark' module Fibonnaci crystalize [n:
Last week I finally caught up with the state of Ruby - the language, the community and the tools in fashion. I'm impressed. These guys seem ...
I once wrote a Perl subroutine that would memoize the subroutine that called it. That much was useful, but then it inserted a copy of itself into the caller, so that its callers would be memoized too. A well-placed call to aggressively_memoize could back-propagate to the whole codebase, spreading functional purity…
These questions originally appeared as an article on programmersheaven.com , written by Ashok K. Pathak, a researcher at Bharat Electronics Limited (CRL), Ghaziabad. They are reproduced here with minor modifications.
Lil is part of the technology that powers Decker , a multimedia creative tool inspired by HyperCard . Decker uses Lil for adding custom behavior to decks and the widgets within. Lil is designed to be learned in layers, but it is a richly multi-paradigm language which incorporates ideas from imperative, functional…
This is a program that determines many properties of the C compiler and machine that it is run on, such as minimum and maximum [un]signed char/int/long, many properties of float/ [long] double, and so on.
I've been asked by several people to explain why I use Clojure for my professional work rather than Racket. ABOUT RACKET I have been using R...
Preface (by Jimmy Hartzell) I am a huge fan of Jon Gjengset’s Rust for Rustaceans, an excellent book to bridge the gap between beginner Rust programming skills and becoming a fully-functional member of the Rust community. He’s famous for his YouTube channel as well; I’ve heard good things about it (watching video…
2018 is an exciting time to be a programmer, with so many good “full service” programming languages to choose from: C, C++ 2017, Go, Python, Rust and who knows Swift too. Programming languages are complicated beasts - even the simplest languages have specifications that run (or would run) in the hundreds of pages, and…
An example of a monadic programming in Scheme that juxtaposes Haskell code for a state monad with the corresponding Scheme code.
Prolog Web Applications
This article attempts to outline, in informal terms, a new theory of combinators, related to the theory of Combinatory Logic pioneered by Moses Schonfinkel, Haskell Curry, and others in the 1930s. Although not essential, an understanding of the classical theory of combinators may be helpful (see the links at the…
Getting started with Zig's meta programming capabilities by leveraging a few useful functions
Writing a lisp compiler from scratch in JavaScript: 6. LLVM system calls
It's kicked the bucket, it's shuffled off its mortal coil, run down the curtain and joined the bleedin' choir invisible!!
A look into the implementation details of CPython's Global Interpreter Lock (GIL) and how they changed between Python 3.9 and the current development branch that will become Python 3.13.
I just finished reading the paper Borrow checking Hylo . It outlines the basic design of Hylo . Hylo is an early-stage programming language, but unlike other contenders of C++, it provides memory safety like rust. Specifically it merges rust’s borrow checking ideas into the framework of moveable value semantics (MVS)…
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Static or dynamic, a program's design is written in its types.
The evolution of the C++ language continues to bring powerful features that enhance code safety, readability, and maintainability. Among these improvements, we got changes and additions to enum class functionalities across C++17, C++20, and C++23. In this blog post, we’ll explore these advancements, focusing on…
Many people who use Rust for a bit - especially those who like the language but do not fall in love with it - feel a sense that there must be a smaller, simpler variation on the same theme which would maybe be a little less powerful, but would also be much easier to use. I agree with them, but I think they are almost…
Null pointers look simple on the surface, and that’s why they’re so dangerous. As compiler optimizations, intuitive but incorrect simplifications, and platform-specific quirks have piled on, the odds of making a wrong assumption have increased, leading to the proliferation of bugs and vulnerabilities. This article…
I was asked (again) today to explain why integer division in Python returns the floor of the result instead of truncating towards zero like...
