Blog Articles - page 2
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A Return to Blogging
I like writing about my personal projects and about programming in general. Helping others learn programming seems to be my calling. I rarely write on this blog, however, but I’m trying to change that. You should have a blog too.
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Finding Focus in Harsh Times
Since 2020 world events have obliterated my ability to focus, and anxiety has gone through the roof. This is a personal reflection and a plan for recovery.
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Cleanup Scala/Java project
Snippet for cleaning up a Scala project’s directory of all compiled files.
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VSCode workplace recommended extensions
You can recommend the required VSCode extensions per repository to your fellow programmers. This is what VSCode calls “workspace recommended extensions”.
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Unsafe Lazy Resource.scala
Snippet for an impure way (no IO) to create a resource that can later be closed.
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Combining the terminal (iTerm) with the IDE
Read article →⌘+Clickon a file path triggers my terminal to open that file inside my IDE, and that helps a lot. -
Tolerance
I just refactored a piece of code. I deleted 6 source code files, and rebuilt the functionality with a bunch of dirty OOP classes shoved in a single file 😱
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Atom/RSS Feeds are the Best Way to Consume the Web
I stay connected to websites I care about via an RSS/Atom feed reader. It’s better than social media for finding out what’s new because it’s clutter-free. By following RSS/Atom feeds, I discover wonderful gems that otherwise would be lost in the noise.
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ING Scala Meetup on Scala 3 (live coding session)
Online meetup on Scala 3’s newly introduced types and features for encoding type classes.
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Implementing a CountDownLatch (async and dirty)
Yo dawg, I heard you liked concurrency primitives. Let’s implement our own asynchronous, dirty CountDownLatch.
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Matomo (Analytics) Hosting via Docker
Docker setup for self-hosting Matomo, an open-source alternative to Google Analytics.
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Scala's List has a Secret
OOP couples the data with the methods operating on it, and this is considered bad in FP circles. But is it?
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Tail Recursive Functions (in Scala)
Turning imperative algorithms to tail-recursive functions isn’t necessarily obvious. In this article (and video) I’m showing you the trick you need, and in doing so, we’ll discover the Zen of Functional Programming.
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Snippet: Tagless Final vs OOP
Snippet of code discussing Tagless Final vs OOP-style dependency injection.
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Snippet: Remove blank lines from text
Just a regular expression.
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There are No Acceptable Ads
Retracted article
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Execute shell commands in F#
Snippet in plain F# with no dependencies. Features a neat shebang.
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Using ScalaTest for Effects
Helpers for integrating with
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Best practice for natural Ordering
Definitions of
Read article →scala.math.OrderingMUST BE consistent withequals, an often overlooked law that can lead to problems. -
Managing Database Migrations in Scala
The database schema should be described as code, in your repository. And you should be able to semi-automatically update your database schema on new deployments.
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