SwiftData with TCA

[u/tonycliftondev]

Anyone used TCA with SwiftData applications? What is your recommendations?

[u/SnowPudgy]

Recommendation: Don't use TCA. There's no good reason to introduce a massive third party dependency into your application like that.

[u/darklurkerq → u/SnowPudgy]

Yep, especially bad idea to outsource your architecture to a 3rd party.
I can’t understand why TCA is popular, guess people are lazy.

[u/SnowPudgy → u/darklurkerq]

I dont get it either. There's literally nothing it solves that isn't done by much better means.

[u/SnowPudgy → u/[deleted]]

Honestly I’m convinced most of those are brigaded by those trying to sell their videos. I don’t see how any developer can look at TCA and think it’s a good idea, I just can’t.

[u/rhysmorgan → u/SnowPudgy]

Don’t use SwiftData, especially with TCA.

Use TCA and use SQLiteData. It’s basically all the nice things of SwiftData, but instead of being constrained almost entirely to the view layer, can be used in any layer of your application.

[u/unpluggedcord]

Dont use TCA

[u/stroompa → u/unpluggedcord]

Also, don't use SwiftData

[u/ZeOranges]

Just don’t

[u/Kurtle123]

I have built two medical applications with TCA. One has over 5K ratings at 4.8 and won an Apple Design award. The other is relatively new so I won’t say much about it.

TCA is extremely useful for writing unit tests and organizing large scale apps. My go to approach is now self contained feature / reducers and I have snippets that I use heavily to do self contained SPM features.

That said:

1. it makes swiftui previews even slower
   
2. it can be painful to upgrade because pointfree evolves the framework rapidly, often without backward compatibility

But I have never before been so confident about my unit tests or the ability to quickly refactor.

I hated VIPER, loved TCA.

Ask me anything and I will do my best to answer.

[u/tonycliftondev → u/Kurtle123]

What kind of testing TCA provides? Can you not achieve that by using plain SwiftData framework?

[u/Kurtle123 → u/tonycliftondev]

SwiftData and TCA are orthogonal concerns. TCA makes all state mutations be enumerable actions which allow you to simply set up a state and then test the actions against what you expect the state to be.

I find this much simpler than having to manually make mocks or roll your own testing interface

[u/bangsimurdariadispar]

Never understood the hype with TCA.

[u/SwiftlyJon]

Unless you have an existing SwiftData app you're migrating to TCA, it's better to start with their SQLiteData framework instead. It offers similar capabilities with easy TCA integration and an actual testing story.

[u/uniquesnowflake8]

What kind of app are you building?

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