Notes on building software, and the occasional tangent.https://engineers-musings.pages.dev/https://engineers-musings.pages.dev/blog/kotlin/kotlin-classes-basics/https://engineers-musings.pages.dev/blog/kotlin/kotlin-classes-basics/Declaring classes, primary and secondary constructors, properties, init blocks, encapsulation, and why Kotlin classes are final by default. Part 1 of a two-part tour.Tue, 27 Jan 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/kotlin/kotlin-classes-types/https://engineers-musings.pages.dev/blog/kotlin/kotlin-classes-types/Beyond the plain class — data classes, enums, sealed hierarchies, objects and companions, nested vs inner, and value classes, each with a small example. Part 2 of two.Thu, 05 Feb 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/kotlin/kotlin-data-types/https://engineers-musings.pages.dev/blog/kotlin/kotlin-data-types/A tour of Kotlin's basic types: val and var, the number types, no implicit conversions, strings and templates, null as part of the type, and Any/Unit/Nothing.Thu, 01 Jan 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/kotlin/kotlin-enums/https://engineers-musings.pages.dev/blog/kotlin/kotlin-enums/Kotlin enums feel familiar coming from Java, but they can carry data, behavior, and exhaustive when-handling. A build-up from the basics.Sat, 14 Feb 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/kotlin/kotlin-exceptions/https://engineers-musings.pages.dev/blog/kotlin/kotlin-exceptions/Kotlin drops checked exceptions entirely. Here's what that changes day to day, and the compiler trickery that makes it work.Mon, 23 Feb 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/kotlin/kotlin-lambdas-basics/https://engineers-musings.pages.dev/blog/kotlin/kotlin-lambdas-basics/Lambda syntax, function types, it, higher-order functions, the trailing-lambda convention, the collection API, and closures. Part 1 of a two-part tour.Wed, 04 Mar 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/kotlin/kotlin-lambdas-beyond/https://engineers-musings.pages.dev/blog/kotlin/kotlin-lambdas-beyond/Function references, non-local returns and labels, anonymous functions, why inline makes lambdas free, lambdas with receivers, and the scope functions. Part 2 of two.Fri, 13 Mar 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/kotlin/kotlin-smartcasts/https://engineers-musings.pages.dev/blog/kotlin/kotlin-smartcasts/How Kotlin's smart casts remove the check-then-cast tax from everyday code, and the rules that decide when they kick in.Sun, 18 Jan 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/kotlin/kotlin-when/https://engineers-musings.pages.dev/blog/kotlin/kotlin-when/Kotlin's when quietly replaces switch, long if/else ladders, and instanceof-with-cast. A tour of the parts that matter.Fri, 09 Jan 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/macos/intel-mac-battery-drain/https://engineers-musings.pages.dev/blog/macos/intel-mac-battery-drain/An Intel Mac draining ~28% overnight wasn't the failing battery — it was one Continuity feature holding the CPU awake. The one-toggle fix, with measured results.Thu, 04 Jun 2026 00:00:00 GMThttps://engineers-musings.pages.dev/blog/macos/intel-mac-diagnostics/https://engineers-musings.pages.dev/blog/macos/intel-mac-diagnostics/Eight terminal commands that tell you why an Intel Mac feels slow — swap, memory pressure, runaway CPU, rogue VMs, and sleep blockers — and how to read each one.Wed, 03 Jun 2026 00:00:00 GMT