anvil
NoCopy Compiler Plugin
anvil | NoCopy Compiler Plugin | |
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8 | 3 | |
1,266 | 154 | |
0.8% | - | |
9.5 | 4.1 | |
2 days ago | 2 months ago | |
Kotlin | Kotlin | |
Apache License 2.0 | Apache License 2.0 |
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anvil
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Refactoring our Dependency Injection using Anvil
Handling DI at scale can be a challenging task in avoiding circular dependencies, build bottlenecks, and poor developer experience. To solve these challenges and make it easier for our developers, we adopted Anvil, a compiler plugin that allows us to invert how developers wire, hook up dependencies and keep our implementations loosely coupled. However, before we get into the juicy details of using this new compiler plugin, let's talk about our current implementation and its problems that we are trying to solve.
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Having both Dagger and Hilt at the same time? 🤔
I would recommend checking out Anvil for multi-module setup as it can provide an easier migration path than Hilt while also providing similar features.
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Whetstone: A DI framework for Android that simplifies working with Dagger 2 using Anvil
In terms of of what Anvil is I'd really recommend reading the README It's a lot more flexible than Hilt and provides a code generation hook so if you have a codebase specific DI pattern you can also set that up to be auto-generated with a custom annotation if you desire.
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Anvil, generating factories without kapt, and module structure.
Recently I've been looking into Anvil as an alternative to Dagger and realised that it can handily generate factories for you without kapt. That brings some exciting potential for build time improvement so I was eager to try it out. However very quickly I got stuck.
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Multiplatform dependency injection libraries equivalent to Dagger/Anvil
I'm currently using Dagger and Anvil for my DI needs. It's been working really well, especially around what Anvil permits in terms of multibindings defined on the type declaration rather than in a module. For example:
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Toying with Kotlin's Context Receivers
Have you considered something like Dagger + Anvil (https://github.com/square/anvil) ? It works well enough that it gets out of your way. Is it doing insane things in the background at compilation time ? Absolutely. But it's worth it. And to save time in debug, you can shim in dagger-reflect to avoid the cost of having to run annotation processors.
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N26 Path To Anvil
For more details, check the official documentation: Anvil Dagger Factory Generation.
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N26 Path to Anvil
And finally, testing: Anvil offers a replace module feature that is handful to provide new dependencies during tests. For that, we create helper modules called testing and we provide fake dependencies of those replacing the production modules. Developers that include the testing in their test classpath can automatically interact with our testing utilities (or create their own, if required). To be completely honest here, it is more of an ongoing process.
NoCopy Compiler Plugin
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Assuming the data class's generated copy() is unacceptable, what's the best way to implement a value type?
Using this compiler plugin library: https://github.com/AhmedMourad0/no-copy
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What don't you like about kotlin?
However, I have recently discovered a compiler plugin which strips the copy function from annotated data classes. May be worth trying out some time.
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Modelling value types in kotlin
Use NoCopy plugin 🎯 There is really nice article about NoCopy here.
What are some alternatives?
kotlin-inject - Dependency injection lib for kotlin
Kotlin Spotify Web API - Spotify Web API wrapper for Kotlin, Java, JS, and Native - Targets JVM, Android, JS (browser), Native (Desktop), and Apple tvOS/iOS. Includes a Spotify Web Playback SDK wrapper for Kotlin/JS, and a spotify-auth wrapper for Kotlin/Android.
Dagger2 - A fast dependency injector for Android and Java.
kotlin-multiplatform-bignum - A Kotlin multiplatform library for arbitrary precision arithmetics
dikt - Simple and powerful DI for kotlin multiplatform
firebase-kotlin-sdk - A Kotlin-first SDK for Firebase
koin - Koin - a pragmatic lightweight dependency injection framework for Kotlin & Kotlin Multiplatform
krontab - Library for using Crontab-like syntax in scheduling of some Kotlin Coroutines tasks to do from time to time
AndroidArchitectureTemplate
KMQTT - Kotlin Multiplatform MQTT client & embeddable and standalone broker
Theatre - Pet project using Clean Architecture + MVVM + Reactive Extensions + Android Architecture Components. The data are fetched from LondonTheatreDirect API. ðŸŽ
NonEmptyCollections - A type-safe implementation for collections that cannot be empty. Life is too short for emptiness-checks!