https://sethlakowske.com Blog posts and articles by Seth Lakowske. en-us Sat, 06 Apr 2024 00:00:00 GMT https://sethlakowske.com/tones-of-the-web/ https://sethlakowske.com/tones-of-the-web/ Sat, 06 Apr 2024 00:00:00 GMT A short Strudel experiment with a simple sound progression. audio javascript https://sethlakowske.com/shooting-weighted-dice-on-the-street/ https://sethlakowske.com/shooting-weighted-dice-on-the-street/ Tue, 28 Nov 2023 00:00:00 GMT After learning various market setups and situations, I've come to see them as a set of probabilities, or probable outcomes… trading https://sethlakowske.com/articles/thoughts-on-search/ https://sethlakowske.com/articles/thoughts-on-search/ Sat, 13 Aug 2022 00:00:00 GMT Often an API is a subset of search. Anytime a user of the API gets a list of items back matching some criteria, it might be a search query written as an API call. One can often turn search queries into an API call… search https://sethlakowske.com/articles/living-offgrid-on-a-solar-powered-boat/ https://sethlakowske.com/articles/living-offgrid-on-a-solar-powered-boat/ Mon, 14 Feb 2022 00:00:00 GMT This is a story about how I came to live on a solar powered boat. I had a dream of powering my life with solar power for over a decade. I started with my home in Sun Prairie, WI… solar https://sethlakowske.com/articles/trading-journey/ https://sethlakowske.com/articles/trading-journey/ Tue, 01 Jun 2021 00:00:00 GMT I've worked jobs where your work is not judged by the market, but instead a bureaucracy. It's hard to know if what you're doing is of value and to what degree… trading https://sethlakowske.com/articles/howto-local-minikube-registry/ https://sethlakowske.com/articles/howto-local-minikube-registry/ Fri, 08 Dec 2017 00:00:00 GMT These steps walk you through setting up a password protected Docker Registry and Nginx Ingress controller on your laptop or workstation. You'll need a Docker client, Minikube, Helm and Kubernetes client (kubectl). docker kubernetes https://sethlakowske.com/software/use-http-browserify-to-submit-formdata-and-images-easily/ https://sethlakowske.com/software/use-http-browserify-to-submit-formdata-and-images-easily/ Sun, 30 Apr 2017 00:00:00 GMT If you want to send an Image or other form data back to the server and like to use Node.js’s http module, then you are in luck. http-browserify will happily send a FormData object if you write it to the stream. javascript browserify https://sethlakowske.com/articles/java-to-haskell-in-zero-days/ https://sethlakowske.com/articles/java-to-haskell-in-zero-days/ Wed, 05 Apr 2017 00:00:00 GMT Haskell is a language that is foreign to most programmers coming from an imperitive language like Java, C#, C++, Python and the like… haskell learning https://sethlakowske.com/articles/monadic-shell-scripts/ https://sethlakowske.com/articles/monadic-shell-scripts/ Sat, 03 Dec 2016 00:00:00 GMT Shell scripts can be monad like in their construction. When shell scripts are chained together with pipes, you get a sense of their composability… haskell linux https://sethlakowske.com/articles/howto-install-docker-kubernets-local-registry/ https://sethlakowske.com/articles/howto-install-docker-kubernets-local-registry/ Sat, 04 Jun 2016 00:00:00 GMT This guide will walk you through the steps to setting up an environment to run Kubernetes (K8S) on your laptop or workstation. You'll need to install Docker if you haven't already and Kubernetes client (kubectl)… docker kubernetes https://sethlakowske.com/articles/why-learn-haskell/ https://sethlakowske.com/articles/why-learn-haskell/ Mon, 25 Apr 2016 00:00:00 GMT Type system improves correctness by constraining input, so you spend less time running broken code. haskell learning https://sethlakowske.com/articles/why-run-docker-containers-and-kubernetes/ https://sethlakowske.com/articles/why-run-docker-containers-and-kubernetes/ Mon, 25 Apr 2016 00:00:00 GMT Code can be broken out into smaller microservices that are easier to learn, release and update. docker kubernetes https://sethlakowske.com/articles/use-browserify-and-minifyify-to-combine-minify-and-obfuscate-multiple-javascript-files/ https://sethlakowske.com/articles/use-browserify-and-minifyify-to-combine-minify-and-obfuscate-multiple-javascript-files/ Wed, 30 Sep 2015 00:00:00 GMT When you have multiple JavaScript files in node.js (CommonJS) format, you can combine them to create a single bundle of JavaScript that is faster to download and easy to include on a webpage… javascript browserify https://sethlakowske.com/articles/webgl-using-gl-mat4-browserify-shader-and-browserify/ https://sethlakowske.com/articles/webgl-using-gl-mat4-browserify-shader-and-browserify/ Tue, 22 Sep 2015 00:00:00 GMT Pare down your WebGL scripts with Browserify and a few supporting modules on simple scenes. The result is a smaller Javascript bundle with only the required code… javascript webgl browserify https://sethlakowske.com/slurp-some-nodejs-streams/ https://sethlakowske.com/slurp-some-nodejs-streams/ Wed, 02 Sep 2015 00:00:00 GMT slurp-some is a Nodejs convenience module I published that allows a user to read a stream up to some predefined amount and error if the stream contains more data… javascript nodejs https://sethlakowske.com/articles/shared-javascript-in-node-and-browser-browserify-tape/ https://sethlakowske.com/articles/shared-javascript-in-node-and-browser-browserify-tape/ Wed, 21 Jan 2015 00:00:00 GMT My goal is to use one language across two environments, the server and the browser. I want to do so easily and I have attempted to achieve this in the past, but ran into difficulties. javascript nodejs browserify testing https://sethlakowske.com/articles/proxy-by-url-must-provide-a-proper-url/ https://sethlakowske.com/articles/proxy-by-url-must-provide-a-proper-url/ Fri, 16 Jan 2015 00:00:00 GMT I get the following error using v0.0.3 of proxy-by-url from github: javascript nodejs https://sethlakowske.com/articles/start-emacs-in-dired-mode/ https://sethlakowske.com/articles/start-emacs-in-dired-mode/ Sat, 10 Jan 2015 00:00:00 GMT You can start emacs in dired mode by adding this to your startup script emacs https://sethlakowske.com/articles/smoothie-charts-nodejs-arduino-stream-transform-test/ https://sethlakowske.com/articles/smoothie-charts-nodejs-arduino-stream-transform-test/ Sun, 07 Dec 2014 00:00:00 GMT Tutorial: streaming Arduino sensor data into a Smoothie Chart with Node.js. javascript nodejs hardware https://sethlakowske.com/electric-bike-article-on-madisonbikelife/ https://sethlakowske.com/electric-bike-article-on-madisonbikelife/ Fri, 01 Aug 2014 00:00:00 GMT I collaborated with my friend Alyson on a electric bike article for her blog MadisonBikeLife.com. Check it out, and all her other biking tips at her biking blog! biking https://sethlakowske.com/software/use-grunt-and-uglifyjs-to-combine-multiple-javascript-files-into-a-single-javascript-file/ https://sethlakowske.com/software/use-grunt-and-uglifyjs-to-combine-multiple-javascript-files-into-a-single-javascript-file/ Thu, 10 Jul 2014 00:00:00 GMT When you are ready to publish your new JavaScript project, you can combine your JavaScript files into one file to get faster page downloads, fewer GET requests and lower complexity for users to manage… javascript https://sethlakowske.com/software/node-js-closing-jsonstream-and-other-system-resources-gracefully/ https://sethlakowske.com/software/node-js-closing-jsonstream-and-other-system-resources-gracefully/ Sun, 29 Jun 2014 00:00:00 GMT System resources sometimes need to shutdown gracefully when exiting. In my case, I have a JSONStream open in node.js… javascript nodejs https://sethlakowske.com/technology/silent-am1h-itx-development-workstation/ https://sethlakowske.com/technology/silent-am1h-itx-development-workstation/ Thu, 15 May 2014 00:00:00 GMT I purchased an AM1H-ITX motherboard 2 weeks ago to replace the old tower under my desk. My old tower is a 6 core AMD with a GTX-260 video card… hardware https://sethlakowske.com/software/singleton-factory-and-mediator-patterns-in-javascript/ https://sethlakowske.com/software/singleton-factory-and-mediator-patterns-in-javascript/ Mon, 25 Nov 2013 00:00:00 GMT This article outlines design patterns in Javascript and in particular how they are used in NodeHawk’s UAV Wifi testbed… javascript https://sethlakowske.com/software/eventemitter-vs-backbone-events-vs-diy-eventbus/ https://sethlakowske.com/software/eventemitter-vs-backbone-events-vs-diy-eventbus/ Thu, 21 Nov 2013 00:00:00 GMT DIY EventBus I wanted an EventBus implementation. I started to write my own EventBus implementation, but about 2 lines in, I wondered, “Is there an easier way?” javascript https://sethlakowske.com/software/cross-environment-shared-logic-with-requirejs-karma-and-mocha/ https://sethlakowske.com/software/cross-environment-shared-logic-with-requirejs-karma-and-mocha/ Sat, 19 Oct 2013 00:00:00 GMT My goal is to use one language and share logic across two environments, the server and the browser. I want to do this easily. javascript testing https://sethlakowske.com/software/sequelize-unit-testing-using-grunt-and-nodeunit/ https://sethlakowske.com/software/sequelize-unit-testing-using-grunt-and-nodeunit/ Sat, 17 Aug 2013 00:00:00 GMT If you want to persist Javascript objects (data) to a database using Node, then it is a good idea to test this mechanism is working. Below you will learn how to accomplish testing your data persistence mechanism… javascript nodejs testing https://sethlakowske.com/think-again/ https://sethlakowske.com/think-again/ Wed, 01 May 2013 00:00:00 GMT I successfully completed the course Think Again: How to reason and argue. It went well… learning https://sethlakowske.com/completed-ml-class-org-course/ https://sethlakowske.com/completed-ml-class-org-course/ Sun, 01 Jan 2012 00:00:00 GMT I completed the inaugural ml-class.org course! I was interested in online courses and honing my machine learning skills, so I took the course. It was a success. Here is my statement of accomplishment… learning