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Issue 147
Dec 27, 2022

Confidence and belief.

Last week, Maaike and I went on a trip to Ivalo, Finland. Holidays are a great way to step out of the daily-routine rollercoaster to relax and reflect. While I feel best in a structured, constant environment, I still found much inspiration and joy in those five days off.

During both Snowmobile tours and Husky rides, I realized how vital confidence and belief could be. Without belief, I wouldn't be able to control the Huskies, and without confidence, the Snowmobile would've quickly gone off-track. Whenever we almost dropped out of a corner, I had to push my faith back to build that trust in myself and retain focus.

Interestingly enough, I realized afterward how this aligns with my side projects. I shared earlier how I managed to progress all my side projects, but I didn't share that it all starts with confidence and belief. I received negative feedback for both RocketSim and Stock Analyzer in the early days, including:

"Nobody needs an app like this"


"You're wasting your time; nobody will pay for such an app."

My confidence and belief got me through, leading me to reach this year's Monthly Recurring Revenue goal of $1000. 

Reaching goals and making progress starts with your own belief. Don't get off-track; retain focus, and make yourself reach targets!

Enjoy this week's SwiftLee Weekly!


Enums are a powerful tool when writing code in Swift. For example, I like to use them to define available onboarding pages and iterate over them to create a dynamic onboarding.


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Suppose you’re into watching a talk on Swift instead of reading an article. In that case, I highly recommend this talk by Marco Eidinger, going over the many available attributes (lesser-known ones as well) in Swift.


The API always feels a bit hidden to me, but it’s one of the nicer things of building apps in SwiftUI.

I enjoyed reading this article by Peter Friese which builds up nicely and shares tips on testing stateful SwiftUI views. For example, a view that contains a checkbox with an on and off state.


Motion Design is essential for every app. Luckily, we get a lot for free when using Apple’s default APIs. However, if you’re looking to go that extra mile with your app, you don’t want to miss out on this thread.


Tjeerd In 'T Veen shares a few significant points regarding testing when it comes down to mobile app releases. If we don’t test things thoroughly, we might be punished later. He recommends finding the fun in writing tests, which I would highly recommend as well. I can’t tell the number of times I found bugs early on just by writing a few tests.


It’s not often that I find articles covering linkers. Michael Eisel shares a little history around Linker Optimization for Apple Platforms and suggests lld as an alternative linker to speed up linking for non-release builds.


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