Best of 2019

The blog posts Hacker News loved most in 2019. 149 posts.

Programming Languages
122

Swift UTF-8 String

Swift 5 switches the preferred encoding of strings from UTF-16 to UTF-8 while preserving efficient Objective-C-interoperability. Because the String type abstracts away these low-level concerns, no source-code changes from developers should be necessary*, but it’s worth highlighting some of the benefits this move gives…

127

Racket News – Issue 7

Mest spelade casinospel 2026 Spel & Recensioner December 24, 2025 | No Comments Svenska spelbolag säger nej till brittiskt inspirerad differentierad skatt Nyheter December 16, 2025 | No Comments Fullständig recension av spelet Aviator: hur fungerar detta virala crash game? Spel & Recensioner December 14, 2025 | No…

132

Swift 5 Exclusivity Enforcement

The Swift 5 release enables runtime checking of “Exclusive Access to Memory” by default in Release builds, further enhancing Swift’s capabilities as a safe language. In Swift 4, these runtime checks were only enabled in Debug builds. In this post, I’ll first explain what this change means for Swift developers before…

133

JIT and Ruby's MJIT

If you already know lots about JIT in general and Ruby’s MJIT in particular… you may not learn much new in this post. But in case you wonder “what is JIT?” or “what is MJIT?” or “what’s different about Ruby’s JIT?” or perhaps “why in the world did they decide to do THAT?”… Well then, perhaps I can

145

Vim 8.2

For MS-Windows, download the self installing executable . Signed MS-Windows files are available on the vim-win32-installer site ( gvim_8.2.0012_x86_signed.exe is recommended) For Unix you probably want to get the latest version using git, see the github page Otherwise see the Download page for options.

149

Clojure - Deps and CLI Guide

In all the above scenarios you might want to use other Clojure and Java libraries (dependencies or 'deps'). These may be libraries you are writing locally, projects in git (e.g. on GitHub) or, commonly, libraries available in the Maven ecosystem and hosted by central repositories like Maven Central or Clojars.