swift - Opinionated Notes

Open Mobile Maps for iOS

A native mobile SDK for OpenStreetMap-map-data on iOS and Android.

Reorder some rows but not all

I'm still writing iOS-apps using Swift and UIKit instead of SwiftUI — I've never been one of those cool kids using the latest tech, and my 100 days of SwiftUI lasted for 33 days or so. Maybe I should give it another chance. But today I found some nice things in

100daysofswiftui

100 Days of SwiftUI — Day 22

Today was another challenge day, this means: I had to change some code of the GuessTheFlag-project and answer some questions afterwards. It didn't take a lot of time and right now, on a friday evening, I'm quite happy about it. I partially solved the challenges yesterday, but back then, I

100daysofswiftui

100 Days of SwiftUI — Day 21

After playing around with colors and gradients yesterday, I just finished the 21st part. I learned about some more modifiers today. For example, adding shadows to elements is pretty easy in SwiftUI. And adding shapes. And borders. I still have to think about how to combine stacks and modifiers and

100daysofswiftui

100 Days of SwiftUI — Day 20

I just finished Day 20 — and it unexpectedly totally brightened my day! Today was the introduction day for the second project. Paul talked about the different stack types in SwiftUI, button, alert — and colors and gradients. And suddenly, I couldn't resist anymore, I had to play with them! So I

swift

AsyncOperation

A few days ago, I was working on an app for a client. With this app you can basically see a staff roster, that needs to be downloaded from a server. The REST-API is built that way, that the app has to talk to different endpoints to download all the

swift

It's self again

Nearly two years ago, I wrote a short piece about self. Since then, a lot has changed: I got fired, found a new job, quit, and found another new job. I'm working from home now as employee of a fully distributed company. To reflect on that, I've started another German-speaking

swift

Running Tests in pre-commit hooks and alternatives

A few months ago, I bought myself a fancy MacBook Pro. You know, one of those fancy devices with the fancy TouchBar, a nice Retina screen and a broken-by-default keyboard. And to make myself feel better, 'cause you never know what might happen in the next couple of years, I

swift

isActive = true vs. NSLayoutConstraint.activate

The whole UI of the app, I helped to develop, is written in code. No Storyboards, no XIBs, just Swift. Someone made this decision looooong ago. Nevertheless, we're using AutoLayout, just like every cool kid should do these days. Typically, our code looks like this: self.titleLabel.topAnchor.constraint(equalTo:

swift

Me, my future self and self

A colleague of mine complained, that I use self too much. In Objective-C, it was everywhere, but he sent me this blogpost and recommended me to use self in Swift sparingly and only when necessary for the compiler. But back in 2012 I started to learn Objective-C. Until 2015 it

swift

preconditionFailure

One of my goals for May 2018 was to finally read The Pragmatic Programmer. I haven't succeeded yet, that's why this year, June was May, Extended Edition and July is June, Extended Edition. A few years ago, a dear friend of mine recommended reading this book to me and I