Super Enum 💪 Dart & Flutter Tutorial – Store Custom Data

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Enumerated types in Dart have always been not so useful, compared to other languages. You cannot store additional data in them and using the regular switch statement is a pain. However, when you use a package called super_enum, you can bring a bit of the enum glory to Dart over from Kotlin.

In this tutorial, you're going to learn about super_enum in Flutter by building states and events for a BLoC used for displaying weather forecast. It's OK if you're not at home with BLoC - we're not going to touch it much. Of course, you can use this package in any Dart project and for any occasion.

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[shubhamjain]

Proud that my teammates created this package - Sahil and Jai

[SahilKumar-oiuq]

Thanks Reso for doing this awesome tutorial and showing various use case of super_enum.

[ridesun]

Best tutorials I have seen. A+ just cool, thx

[danvilela]

Awesome! Way better than that much boilerplate.. Can built_value (which has enum classes) be used to this too and replace also equatable?

[ianjaspersantos]

Very useful tutorial keep it coming! 😍

[pathakvivek]

I am definitely going to ues these packages..

[mkroven]

after updates on bloc and superenum, generated files are on the top level, so weather_bloc.g.dart should be generated instead of weather_event.g.dart. So in the ui, while writing bloc listener I tried } and it seems worked. :) Thanks for great vid.

[parsamaghsoodi]

thanks. I have a question
assume I have 6 or more bloc or qubit in my flutter project
and all of them have 3 state(loading, error, success) but success of each bloc are different arguments
now what is best practice for implementing this. use multi bloc state file with exactly same structure and a little different success argument or is there any better option for reduce boiler plate code?

[eliasavelino]

Hello Reso Coder, what shall we do in the case we want to pass a List<SomeEntity> as the DataField? You can only use the 'List' class but not 'List<SomeEntity'. Is there something we can do other than have to wrap the SomeEntity in a 'SomeEntityList' class?

[Linxy]

ResoCoder Help! Its not possible to yield* superEnum.when(..., ...); inside the bloc after the new version. What can we do now?

[oblakus]

These 2 dislikes: first one was just a guy with big big fingers, the other one was that same guy really trying to hit like 😁

[tahamalas]

I faced an issue using this approach, the problem that when yielding a new state the previous one gets replaced completely and its data gets lost, is there a way to overcome this problem. And thanks for your valuable courses that we learnt a lot from.

[greyabeing]

is this tutorial part of a series weather app?

[peekpt]

The problem of using another pointer mapGetWeatherToState is you will not be able to use local variables directly, you need to pass them in attributes

[peekpt]

It's bird, it's a plane, no, it's super-enum :o

[Linxy]

I dont like code generation libraries but anyway great job resoC O D E R

[narcodico]

How would you deal with not wanting a specific property to be picked up by Equatable ? e.g.: I don't want a specific property from a state class to influence equality between two state objects. At first glance it seems you don't have a choice.

[peekpt]

Matt, you could look at Mobx, it's awesome!

[TheFitnessGmer]

Nice tutorial but could you also show us how this can be tested?

[nodinosaur]

Quite disappointed to see that @Reso code is uninformed as We have had Sealed Class equivalent for well over 2 years (started with Dart 1!)

and that there are other packages making use of them: