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Swift Programming

Conditionally debounce value updates, in Swift

Conditionally debounce value updates, in Swift

Improve your iOS app's performance and enhance your users' experience by learning how to conditionally debounce events. Also, it's a panacea that solves everything. Ok, almost everything. Depending on how you look at it.

Metaprogramming in Swift, and the issue with Process and relative paths

Find out why your Swift CLI tool isn't capable of dealing with relative paths, and how to solve it!

Convert between image (pixels) and scaleAspectFit UIImageView coordinates like a champ!

Convert between image (pixels) and scaleAspectFit UIImageView coordinates like a champ!

When working with images in iOS, it's sometimes necessary to convert between an image's pixel coordinates and the coordinates of the UIImageView that displays the image. Here's how to do it.

Making a zoomable Image, in SwiftUI

Making a zoomable Image, in SwiftUI

This should have been simple, but it wasn't. So if you too are having a hard time making a zoomable image in SwiftUI, come on in!

Preserve your images' transparency when saving and sharing them, in Swift

Preserve your images' transparency when saving and sharing them, in Swift

Loosing your rounded corners or transparent background when saving an image to the user's photo library or sharing it with UIActivityViewController? It's because it's be turned into a JPEG. Here's how to solve that.

Build OpenCV Contrib as a .xcframework, for iOS, on a M1

Build OpenCV Contrib as a .xcframework, for iOS, on a M1

We needed an OpenCV Contrib module in an iOS app, using Swift Package Manager. I thought the hardest part would be using OpenCV. How wrong I was.

Add a height-flexible placeholder to your UITextView

Add a height-flexible placeholder to your UITextView

Once you have tasted SwiftUI, this kind of UIKit lacking makes you wish you could refactor a client's whole codebase at a snap from your fingers. At least the UI side of it. But, alas, there is no magic spell for that. Yet. What kind of lacking? UITextView doesn't have