Notes from a software engineer: Flutter, Swift, and silly software experiments.https://kliuchev.com/https://kliuchev.com/blog/hello-world/https://kliuchev.com/blog/hello-world/First post: why this blog exists and what to expect here.Mon, 13 Jul 2026 00:00:00 GMThttps://kliuchev.com/blog/swift-tips-4-build-arrays-declaratively-with-arraybuilder/https://kliuchev.com/blog/swift-tips-4-build-arrays-declaratively-with-arraybuilder/Hey! These are Swift Tips — quick, short, and useful insights about Swift. No fillers, no long reads, no BS. Just useful things you may not know. Today we will Mon, 26 Jan 2026 00:00:00 GMThttps://kliuchev.com/blog/swift-tips-2-make-your-folder-cool/https://kliuchev.com/blog/swift-tips-2-make-your-folder-cool/Do you know that the directory where you store a local copy of your project doesn’t have to be boring?Sun, 19 Oct 2025 00:00:00 GMThttps://kliuchev.com/blog/swift-typs-2-flaky-unit-tests/https://kliuchev.com/blog/swift-typs-2-flaky-unit-tests/Why unit tests fail only on CI and how to fix them: await instead of timeouts with Swift Testing, serialized snapshot test plans, and rules for stable tests.Sun, 19 Oct 2025 00:00:00 GMThttps://kliuchev.com/blog/swift-tips-1-scripting-with-swift/https://kliuchev.com/blog/swift-tips-1-scripting-with-swift/Every engineer has this moment in their lives when they start thinking — “I should create tooling for my project to make things quicker”. They usually start witThu, 16 Oct 2025 00:00:00 GMThttps://kliuchev.com/blog/flutter-is-a-bad-choice-for-you-unless-its-not/https://kliuchev.com/blog/flutter-is-a-bad-choice-for-you-unless-its-not/When Flutter is the wrong choice, when it's the right one, and what actually matters for an app's success: UI, product experience, value, and time to market.Thu, 10 Apr 2025 00:00:00 GMThttps://kliuchev.com/blog/improve-asyncimage-in-swiftui/https://kliuchev.com/blog/improve-asyncimage-in-swiftui/Build a custom cached AsyncImage in SwiftUI that deduplicates network requests with Combine, plus URLSession cache policies and an AsyncSequence refactor.Sat, 05 Apr 2025 00:00:00 GMThttps://kliuchev.com/blog/swiftui-animation-creating-an-interactive-button-with-timelineview/https://kliuchev.com/blog/swiftui-animation-creating-an-interactive-button-with-timelineview/Build an equalizer-style animated button in SwiftUI with TimelineView — and why it beats DispatchQueue recursion, Timers, and needless ViewModels.Sat, 14 Dec 2024 00:00:00 GMThttps://kliuchev.com/blog/how-to-create-instagram-like-animation/https://kliuchev.com/blog/how-to-create-instagram-like-animation/A step-by-step Flutter guide: detect a double tap, draw over the screen with Overlay, and combine opacity, scale, rotation and position animations into the Instagram heart effect.Sat, 01 Jun 2024 00:00:00 GMThttps://kliuchev.com/blog/how-to-draw-a-custom-icon-in-flutter/https://kliuchev.com/blog/how-to-draw-a-custom-icon-in-flutter/Learn CustomPaint and CustomPainter by drawing three heart icons — outlined, filled and gradient — with Paint styles, shaders and Bézier paths.Wed, 22 May 2024 00:00:00 GMThttps://kliuchev.com/blog/how-to-get-details-on-ondoubletap-in-flutter/https://kliuchev.com/blog/how-to-get-details-on-ondoubletap-in-flutter/GestureDetector's onDoubleTap gives you no tap position — here's how to build a DoubleTapDetector widget that does.Wed, 22 May 2024 00:00:00 GMT