HTTP/2 200 content-type: application/rss+xml x-amz-meta-md5chksum: 0388e3b1ed3bb4b92429963b7534b778 last-modified: Sat, 08 Feb 2025 18:49:11 GMT server: AmazonS3 content-encoding: gzip date: Mon, 29 Dec 2025 21:24:09 GMT etag: W/"0388e3b1ed3bb4b92429963b7534b778" vary: accept-encoding x-cache: Hit from cloudfront via: 1.1 2ace1ac5338e11353a1b92d324dde856.cloudfront.net (CloudFront) x-amz-cf-pop: TLV50-C1 x-amz-cf-id: -fCEfXGneR8skij5li-vKWEgaFgzftIFnvkzWem9NOBkvY7VrIkdgg== age: 271 https://mko.re/Sat, 01 Feb 2025 00:00:00 +0000Remko TronçonRemko Tronçonhttps://www.youtube.com/watch?v=L-LSY4Y9G68Sat, 01 Feb 2025 00:00:00 +0000Remko Tronçonhttps://mko.re/talks/age-plugin-se-fosdem-2025/ <img src="https://mko.re/talks/age-plugin-se-fosdem-2025/hero_hu1fd8cfc8be605ded493a4a53a6edcdd0_250563_640x0_resize_box_3.png" width="640" height="360"/> In this lightning talk, I show age-plugin-se in action, and touch on the steps taken to make it robust, simple, and distributable on multiple platforms (including Alpine Linux), all while keeping the dependencies (including tools) to a minimum.https://mko.re/blog/swift-alpine-packaging/Sun, 02 Jun 2024 00:00:00 +0000Remko Tronçonhttps://mko.re/blog/swift-alpine-packaging/ <img src="https://mko.re/blog/swift-alpine-packaging/hero_hu447e204f4d18572619e9ad6f34ad1dde_93601_640x0_resize_q75_box.jpg" width="640" height="329"/> <p>While trying to build my <a href="carview.php?tsp=https://github.com/remko/age-plugin-se">Age Apple Secure Enclave plugin</a>, a small Swift CLI app, on <a href="https://www.alpinelinux.org">Alpine Linux</a>, I realized that the Swift toolchain doesn&rsquo;t run on Alpine Linux. The upcoming Swift 6 will support (cross-)compilation to a static (musl-based) Linux target, but I suspect an Alpine Linux version of Swift itself isn&rsquo;t going to land soon. So, I explored some alternatives for getting my Swift app on Alpine.</p>https://mko.re/blog/swiftpm-coverage/Sun, 21 Apr 2024 00:00:00 +0000Remko Tronçonhttps://mko.re/blog/swiftpm-coverage/ <p>The <a href="carview.php?tsp=https://github.com/remko/age-plugin-se">age plugin for Apple&rsquo;s Secure Enclave</a> is a small, platform-independent Swift CLI app, built using the <a href="https://www.swift.org/documentation/package-manager/">Swift Package Manager</a>. Because it does not use Xcode for building, you can&rsquo;t use the Xcode IDE for collecting and browsing test coverage of your source files. I therefore wrote <a href="https://github.com/remko/age-plugin-se/blob/main/Scripts/ProcessCoverage.swift">a small (self-contained, dependencyless, cross-platform) Swift script</a> to transform SwiftPM&rsquo;s raw coverage data into <a href="https://remko.github.io/age-plugin-se/ci/coverage.html#f4">annotated source code</a>, together with an <a href="https://remko.github.io/age-plugin-se/ci/coverage.svg">SVG badge</a> to put on your project page.</p>https://mko.re/blog/uxn-wasm/Sun, 24 Dec 2023 00:00:00 +0000Remko Tronçonhttps://mko.re/blog/uxn-wasm/ <img src="https://mko.re/blog/uxn-wasm/hero_hu4ee6495a6c6cd554063f7edc1e6f9c71_32438_640x0_resize_box_3.png" width="640" height="252"/> <p>While watching <a href="https://www.youtube.com/watch?v=umSuLpjFUf8" title="'Concatenative programming and stack-based languages' -- Douglas Creager, Strange Loop 2023">a Strange Loop talk on concatenative programming</a>, I learned about <a href="https://100r.co/site/uxn.html">Uxn</a>, a small virtual machine that runs games, editors, drawing programs, &hellip; Uxn has been <a href="https://github.com/hundredrabbits/awesome-uxn#emulators" title="Uxn Emulators">ported to various platforms</a>, including classic consoles such as the Nintendo DS, GBA, Playdate, &hellip;</p> <p>There also is a JavaScript version: <a href="https://rabbits.srht.site/uxn5/" title="Uxn5: Uxn/Varvara JavaScript system">Uxn5</a>. Since the Uxn5 core was a straight translation of the C reference implementation to pure JavaScript, it wasn&rsquo;t very performant. After <a href="https://mko.re/blog/waforth" title="WAForth: Forth Interpreter+Compiler for WebAssembly">my latest expeditions into WebAssembly</a>, I wanted to give writing a pure emulator in WebAssembly a try as well, so I created <a href="https://github.com/remko/uxn.wasm" title="uxn.wasm">uxn.wasm</a>, a WebAssembly core for the Uxn virtual machine.</p>https://mko.re/blog/cloudrun-slog/Wed, 16 Aug 2023 00:00:00 +0000Remko Tronçonhttps://mko.re/blog/cloudrun-slog/ <p>In this post, I&rsquo;ll walk through a small example of a Go web app for <a href="carview.php?tsp=https://cloud.google.com/run">Cloud Run</a> that uses Go 1.21&rsquo;s standard library <a href="https://pkg.go.dev/log/slog"><code>slog</code></a> package for structured logging to Cloud Logging.</p> <p>Contrary to the <a href="https://cloud.google.com/logging/docs/setup/go" title="Setting Up Cloud Logging for Go · Google Cloud">documented &lsquo;standard&rsquo; approach for logging</a>, this example doesn&rsquo;t use any third-party logging package for logging. Instead, it relies on Cloud Run&rsquo;s support for ingesting structured logs by <a href="https://cloud.google.com/run/docs/logging#using-json" title="Write structured logs · Google Cloud">simply printing JSON to standard error</a>.</p>https://mko.re/blog/age-plugin-se/Fri, 14 Jul 2023 00:00:00 +0000Remko Tronçonhttps://mko.re/blog/age-plugin-se/ <img src="https://mko.re/blog/age-plugin-se/hero_hu4dcc2415b02bea77b244f5ab276955d2_123394_640x0_resize_q75_box.jpg" width="640" height="374"/> <p>For my day-to-day encryption needs, I&rsquo;m a big fan of <a href="https://github.com/FiloSottile/age">age</a>. age is a simple, modern and secure file encryption tool, and serves as a better replacement for tools such as GnuPG. You can even use it as <a href="https://github.com/FiloSottile/passage" title="passage">the backend for managing your passwords</a>.</p> <p>For extra convenience and security, I wanted to be able to use my MacBook&rsquo;s Secure Enclave (controlled by Touch ID) to encrypt files, so I created an age plugin for this: <a href="carview.php?tsp=https://github.com/remko/age-plugin-se"><code>age-plugin-se</code></a>.</p>https://www.youtube.com/watch?v=QqW39jElFhASat, 04 Feb 2023 00:00:00 +0000Remko Tronçonhttps://mko.re/talks/waforth-fosdem-2023/ <img src="https://mko.re/talks/waforth-fosdem-2023/hero_hu5310bb0ed2775bcf7630df962ed0870d_43282_640x0_resize_box_3.png" width="640" height="360"/> In this FOSDEM'23 talk, I dive into the details of WAForth, a tiny but complete Forth interpreter and dynamic compiler for and written in WebAssembly.https://mko.re/blog/waforth/Thu, 24 May 2018 00:00:00 +0000Remko Tronçonhttps://mko.re/blog/waforth/ <img src="https://mko.re/blog/waforth/hero_hu158a6b9004e8049e9e04c4f4eca9ed13_30560_640x0_resize_box_3.png" width="640" height="252"/> <p>In yet another &lsquo;probably-useless-but-interesting&rsquo; hobby project, I wrote a Forth compiler and interpreter targeting WebAssembly. It&rsquo;s written entirely in <a href="https://webassembly.org">WebAssembly</a>, and comes with a compiler that dynamically emits WebAssembly code on the fly. The entire system (including 80% of all core words) fits into a 10k (5k gzipped) WebAssembly module. You can try out <a href="https://mko.re/waforth" title="WAForth Interactive Console">the WAForth interactive console</a>, or grab the code from <a href="https://github.com/remko/waforth" title="WAForth GitHub page">GitHub</a>.</p>https://mko.re/blog/ken-burns-ffmpeg/Sun, 06 Aug 2017 00:00:00 +0000Remko Tronçonhttps://mko.re/blog/ken-burns-ffmpeg/ <img src="https://mko.re/blog/ken-burns-ffmpeg/hero_hu9f64d330349da8a55a534d4227eda8e7_317136_640x0_resize_q75_box.jpg" width="640" height="264"/> <p>One of the first things that impressed me about Mac OS X when I first saw it was its screensaver. Instead of just showing a simple slideshow of your pictures, it actually used a <a href="https://en.wikipedia.org/wiki/Ken_Burns_effect" title="Ken Burns effect -- Wikipedia">Ken Burns</a> panning and zooming effect with a fancy fading transition to make the otherwise static pictures really come to life. It always sounded like a fun project to create a standalone tool to create slideshow movies that used this effect, with full control over where and how much pictures should be zoomed. It turns out you don&rsquo;t really need a new tool: you can get the same result using just <a href="https://ffmpeg.org">FFMpeg</a>. In this post, I&rsquo;ll walk through the steps of creating slideshows using the Ken Burns effect.</p> <p>Oh, and cats. There will be cats!</p>https://mko.re/blog/react-swift/Mon, 26 Sep 2016 00:00:00 +0000Remko Tronçonhttps://mko.re/blog/react-swift/ <img src="https://mko.re/blog/react-swift/hero_hu3b5ba7e41b0cfae33ce275f453ba0692_13970_640x0_resize_box_3.png" width="640" height="194"/> <p><a href="https://facebook.github.io/react/">React</a>&rsquo;s standard flow is to start with an empty HTML template from the server, and populate the DOM entirely on the client. Letting React pre-render the initial HTML for your app on the server before the client takes over has some advantages, though: it lets slower (mobile) clients load your app much faster, and it&rsquo;s good for SEO for search engines that don&rsquo;t support JavaScript. Since you have to run React on the server to do this, you need a JavaScript-able backend, which is why such <a href="https://medium.com/@mjackson/universal-javascript-4761051b7ae9#.ryy93gr3m"><em>Universal</em></a> (a.k.a. <em>Isomorphic</em>) apps are mostly built with <a href="https://nodejs.org/">Node.js</a> backends. However, you can create universal React apps with other languages too, including <a href="https://swift.org">Swift</a>. In this post, I&rsquo;ll walk through <a href="https://github.com/remko/react-swift-example">an example of a universal React app</a> using Swift&rsquo;s <a href="https://vapor.codes">Vapor</a> web framework.</p>