https://www.chrisarmstrong.dev/posts Development and tech musings. I'm a full-stack developer working with serverless architecture on AWS with TypeScript and React en-us hello@chrisarmstrong.dev (Chris Armstrong) hello@chrisarmstrong.dev (Chris Armstrong) Wed, 13 May 2026 00:00:00 GMT https://www.chrisarmstrong.dev/posts/emulating-inheritance-without-classes-2026-05-11 https://www.chrisarmstrong.dev/posts/emulating-inheritance-without-classes-2026-05-11 The O in OCaml is for its object-oriented extension, but I needed a way to emulate the constraints of inheritance without it. This raised some interesting design questions about how to do it using only the core ML language. Wed, 13 May 2026 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamlgtkguigircode-generation https://www.chrisarmstrong.dev/posts/tackling-multiple-namespaces-in-ocgtk https://www.chrisarmstrong.dev/posts/tackling-multiple-namespaces-in-ocgtk Even though I was focussed only on generating GTK bindings for OCaml, I still had to consider all the other libraries it depends on. Fri, 01 May 2026 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamlgtkguigircode-generation https://www.chrisarmstrong.dev/posts/ocgtk-preview1-release https://www.chrisarmstrong.dev/posts/ocgtk-preview1-release ocgtk, a set of GTK4 bindings for OCaml, is now available on opam as preview1 release Tue, 21 Apr 2026 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamlgtkguigircode-generation https://www.chrisarmstrong.dev/posts/introducing-ocgtk-gtk4-bindings-for-ocaml https://www.chrisarmstrong.dev/posts/introducing-ocgtk-gtk4-bindings-for-ocaml Introducing ocgtk, a new set of GTK4 bindings for OCaml generated from GObject Introspection data. Sun, 12 Apr 2026 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamlgtkguigircode-generation https://www.chrisarmstrong.dev/posts/sydney-ai-engineering-march-2026-losing-control-and-getting-it-back-2026-03-04 https://www.chrisarmstrong.dev/posts/sydney-ai-engineering-march-2026-losing-control-and-getting-it-back-2026-03-04 Last night I presented a talk at the Sydney AI Engineering Meetup on using agentic coding loops with lesser known languages and less-capable models, of which you can find the videa and slides linked Tue, 03 Mar 2026 21:50:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamlllmagentic coding https://www.chrisarmstrong.dev/posts/losing-control-2026-02-06 https://www.chrisarmstrong.dev/posts/losing-control-2026-02-06 Free AI credits, a side project picked on a whim, and a false sense of progress left me with a codebase I couldn't read. Losing control was necessary to understand how to get it back. Fri, 06 Feb 2026 06:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) aillmocamlcode-generationrefactoring https://www.chrisarmstrong.dev/posts/what-would-make-ocaml-serverless-ready https://www.chrisarmstrong.dev/posts/what-would-make-ocaml-serverless-ready What role does programming language choice make when targeting serverless environments, and how does OCaml stack up against popular serverless development languages? What would it take to make OCaml your primary development language for serverless? Thu, 08 Jan 2026 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamlserverlesscloudaws https://www.chrisarmstrong.dev/posts/icfp-wrapup-2025-10-18 https://www.chrisarmstrong.dev/posts/icfp-wrapup-2025-10-18 Wrap-up on my time at the ICFP '25 conference in Singapore Sat, 18 Oct 2025 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) icfpawssmawssdkocaml https://www.chrisarmstrong.dev/posts/smaws-update-2025-09-30 https://www.chrisarmstrong.dev/posts/smaws-update-2025-09-30 ICFP, smaws gets multiple scheduler support Tue, 30 Sep 2025 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) serverlessawssmawssdkocaml https://www.chrisarmstrong.dev/posts/smaws-update-2025-09-18 https://www.chrisarmstrong.dev/posts/smaws-update-2025-09-18 Update on smaws, an AWS SDK for OCaml Thu, 18 Sep 2025 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) serverlessawssmawssdkocaml https://www.chrisarmstrong.dev/posts/ocaml-cross-compilation-an-experiment https://www.chrisarmstrong.dev/posts/ocaml-cross-compilation-an-experiment OCaml has no official solution to cross-compilation, with many disparate options developed for different use cases. In this article I describe my own experiments with cross-compilation and attempts to make it easier to get started and maintain. Wed, 30 Apr 2025 10:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamlcross-compilation https://www.chrisarmstrong.dev/posts/ppx-lib-for-generating-new-code https://www.chrisarmstrong.dev/posts/ppx-lib-for-generating-new-code ppxlib is usually just thought of as a tool for transforming OCaml code, but it can be used to generate new code too. Mon, 31 Mar 2025 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) awsocamlppxlib https://www.chrisarmstrong.dev/posts/removing-unused-code-in-ocaml https://www.chrisarmstrong.dev/posts/removing-unused-code-in-ocaml OCaml has some facilities for eliminating unused code - I explore what it can do, and how you structure your code to take advantage of it Sat, 16 Nov 2024 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamldead code eliminationtree shakingunused code https://www.chrisarmstrong.dev/posts/dead-code-elimination-dead-end-in-ocaml https://www.chrisarmstrong.dev/posts/dead-code-elimination-dead-end-in-ocaml My (unsuccessful) investigation into removing unused code from the compiled output of OCaml, including all the web archeology and deep-dive into how native binaries are formed. Wed, 23 Oct 2024 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamldead codetree shaking https://www.chrisarmstrong.dev/posts/unit-testing-with-ppx_expect https://www.chrisarmstrong.dev/posts/unit-testing-with-ppx_expect Some notes on using ppx_expect to unit test Sun, 16 Apr 2023 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) ocamltesting https://www.chrisarmstrong.dev/posts/what-im-working-on--resource-references-and-iam-policies https://www.chrisarmstrong.dev/posts/what-im-working-on--resource-references-and-iam-policies ocaml-cfgen gets resource reference, IAM policy generation and what's next Fri, 07 Apr 2023 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) awsocamlcloudformation https://www.chrisarmstrong.dev/posts/what-im-working-on--ocaml-cfgen https://www.chrisarmstrong.dev/posts/what-im-working-on--ocaml-cfgen A new project I'm working on to generate CloudFormation templates from OCaml bindings, and the problems that motivated its creation Mon, 03 Apr 2023 00:00:00 GMT hello@chrisarmstrong.dev (Chris Armstrong) awsocamlcloudformation