StemFox IO @StemFoxIO

iOS since 2011. 6 kids, one wife. Life is good! youtube.com/@StemFoxIO Provo, UT Joined April 2022

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StemFox IO @StemFoxIO

2 weeks ago

There is a line (I think from Uncle Bob) that the biggest improvements in software engineering have come from limiting developers. Removing the GoTo, etc. I wonder how the AI game will play out in this respect. Not well in many cases.

Marcin Krzyzanowski @krzyzanowskim

2 weeks ago

@Dimillian it was NEVER problem to output bad code.

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StemFox IO @StemFoxIO

3 weeks ago

@ThePrimeagen Typing at 63 wpm. 🤌

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StemFox IO @StemFoxIO

a month ago

@seanallen_dev My favorite phone for size is still my first. An old Nikita. It was tiny. Loved it. Would buy again as an iPhone in a second.

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StemFox IO @StemFoxIO

a month ago

@azamsharp Research is one of the best uses of AI. Being able to track and print out a call stack is so useful, especially when there are jumps like notifications.

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StemFox IO @StemFoxIO

a month ago

@Shubham_iosdev Love this!! Super great!

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StemFox IO @StemFoxIO

a month ago

`AppStore.sync()` is not the Restore Purchases API you should be using. It looks like it is. It isn't. The right call: `for await result in Transaction.currentEntitlements` Instant. Silent. No password prompt. Covers 90%. Fallback `to sync()` youtu.be/EPJAW4AZamY

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StemFox IO @StemFoxIO

a month ago

🚨Stop storing premium state in UserDefaults. Use Transaction.currentEntitlements. One is device-bound. One is Apple-ID-bound. Apple Review only cares about one of them. Heres which: youtu.be/EPJAW4AZamY

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StemFox IO @StemFoxIO

2 months ago

App Review doesnt find obscure bugs in your IAP code. They delete your app. Reinstall. Tap Restore. If your UserDefaults flag wiped → 3.1.1 rejection on autopilot. Thats the entire test. Thirty seconds to rejection. youtu.be/EPJAW4AZamY

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StemFox IO @StemFoxIO

2 months ago

@azamsharp 100% peak. Use mine every day.

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StemFox IO @StemFoxIO

2 months ago

@ios_dev_alb Xcode improvements. Better native AI integrations and MCPs

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StemFox IO @StemFoxIO

2 months ago

New video out! Want to avoid In App Purchase rejections? Take a watch: youtu.be/EPJAW4AZamY

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StemFox IO @StemFoxIO

2 months ago

@twannl Congratulations! Well earned!

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StemFox IO @StemFoxIO

2 months ago

You've shipped Strategy Pattern code. You probably didn't know. If you've ever written `decoder.keyDecodingStrategy = .convertFromSnakeCase` — that's it. Apple named it Strategy on purpose. Strategy isn't just a GoF book chapter. It's a working pattern Apple shipped in: • JSONDecoder.KeyDecodingStrategy • JSONDecoder.DateDecodingStrategy • NumberFormatter.Style • DateFormatter.Style • Sequence.sorted(by:) Each one swaps an algorithm by handing one in. The mental model: a delegate is a protocol that hands off behavior. UITableViewDelegate hands off ~30 things — selection, height, swipe actions. A Strategy hands off ONE thing. Strategy = a single-method delegate. Two valid Swift forms: 1. Closure on the enum case — idiomatic, ergonomic 2. Protocol + one struct per strategy — extensible, testable in isolation Pick #1 for ergonomics. Pick #2 when you need extension from outside the module. Both kill the multi-case switch. The trigger to deploy it: extension. A switch that will grow new cases wants Strategy. A switch that will never grow is fine. Don't reach for it as ceremony. Full walkthrough — including a real refactor from a shipping iOS app: youtu.be/Chh7wyGUtYs

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StemFox IO @StemFoxIO

2 months ago

A refactor is just a shuffling of code. But it's a shuffling that makes the code base better. Boy Scout motto: leave it better than you found it. That's why Strategy beats nested switches — same data, just lives next to the case it belongs to.

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StemFox IO @StemFoxIO

2 months ago

The cleanest definition of the Strategy Pattern I've found: "A delegate that does one job." If you understand UITableViewDelegate, you already understand Strategy. Same machinery, narrower scope. Full breakdown: youtu.be/Chh7wyGUtYs

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StemFox IO @StemFoxIO

2 months ago

Apple literally named these: • JSONDecoder.KeyDecodingStrategy • NumberFormatter.Style • DateFormatter.Style These ARE the Strategy Pattern. If you've used any of them, you've already shipped Strategy code. You just didn't know the name. youtu.be/Chh7wyGUtYs

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StemFox IO @StemFoxIO

2 months ago

@azamsharp One of my favorite examples of this was in a personal project. I'd been working with Claude at changing some behavior. Was reviewing the code and noticed 4 variables with similar names. I re-prompted asking if they were all necessary (I knew it could be done with one). 🙄

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StemFox IO @StemFoxIO

2 months ago

@azamsharp This makes a certain amount of sense. Good system design is a top tier skill. Few really posses it. There for, there would be much less training data on it.

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StemFox IO @StemFoxIO

2 months ago

@dhh I love this. I remember when I started college (2003). I first had a PC, but found setting up the dev environment unpleasant. Then I got a mac and loved how easy it was.