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The most popular blog posts about programming languages on Hacker News. 3,709 posts.

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2073

Golang Diaries: Generics

My coding time this year has been invested in Quamina , an event-filtering library implemented in Go. Just in the last couple of weeks I spotted an opportunity to bring Go’s shiny new generics to bear, and not just anywhere, but for a central data structure. I got good results, but the process was sort of painful; I…

2076

Parsing S-expressions in C (2019)

Over the past couple weeks I've been trying to work out how I want to store my game configuration. At first I started playing with XML, which was nice because I could stream a file rather than loading the entire thing into memory but I turned away from XML because …

2079

Recto – A Truly 2D Language

Recto is a 2D programming language that uses nested rectangles as its core syntax, encoding structure and recursion directly in space instead of a linear stream of text. Recto explores new ways to write, parse, and reason about code—and even natural language—spatially.

2081

The Design and Use of QuickCheck

QuickCheck is the grandfather of property-based testing libraries. Despite being imitated in over thirty languages, the original implementation remains pre-eminent due to the type system and consistent logic of the Haskell language in which it is written.

2085

Not Explicit

Oftentimes when I am conversing about the design of Rust with other users - as on RFCs or the internals forum - I witness a peculiar remark about “explicitness.” It usually goes something like this: I do not like Feature Design X because it is too implicit. Magic is okay in Other Language Y, but Rust is supposed to be…

2088

Rust: Structuring and handling errors in 2020 (2020)

After working through “the book” on the Rust programming language and getting started with the first non-trivial, real-world application I found myself faced with a question I didn’t yet feel well-equipped to handle: “How should you structure error handling in a mature rust application?”

2089

REPL Driven Design

If you follow me on facebook you know that I’ve been publishing daily CoronaVirus statistics. I generate these statistics using the daily updates in the Johns Hopkins github repository .

2091

Go Data Structures (2009)

When explaining Go to new programmers, I've found that it often helps to explain what Go values look like in memory, to build the right intuition about which operations are expensive and which are not. This post is about basic types, structs, arrays, and slices.

2095

A Crash Course on ML Modules (2015)

I was having lunch with a couple of Haskell programmers the other day and the subject of the ML family came up. I’ve been writing a lot of ML lately and mentioned that I thought *ML was well worth learning for the average Haskeller. When pressed why the best answer I could come up with was “Well.. clean language, Oh!…

2096

Type inference

Type inference is a major feature of several programming languages, most notably languages from the ML family like Haskell. In this post I want to provide a brief overview of type inference, along with a simple Python implementation for a toy ML-like language.

2097

Lessons learned from a successful Rust rewrite

I have written about my on-going rewrite-it-to-Rust effort at work: 1 , 2 , 3 . And now it's finished, meaning it's 100% Rust and 0% C++ - the public C API has not changed, just the implementation, one function at time until the end. Let's have a look back at what worked, what didn't, and what can be done about it.

2098

A lowering strategy for control effects in Rust

The Rust language has incrementally grown a set of patterns to support control-flow effects including error handling, iteration, and asynchronous I/O. In The registers of Rust , boats lays out four aspects of this pattern shared by Rust’s three effects. Today these effects are typically used in isolation, or at most…

2099

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.

2100

C++ Safety, in Context

Scope. To talk about C++’s current safety problems and solutions well, I need to include the context of the broad landscape of security and safety threats facing all software. I chair the ISO C++ s…