Hi, I wanted to know what's the point of mapping f...
# mvikotlinl
Lawrence
05/14/2022, 2:24 AMHi, I wanted to know what's the point of mapping from State to Model? Both seem to be pretty much the same? Couldn't we just do
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Lawrence
05/14/2022, 2:33 AMokay i see it explained here https://arkivanov.github.io/MVIKotlin/binding_and_lifecycle.html
Lawrence
05/14/2022, 2:44 AMi think it would be handy to have this extension function to be part of the library? https://github.com/JetBrains/compose-jb/blob/a1853204d7b0e543bb7055cc8f9aa11e56625[…]ils/src/commonMain/kotlin/example/todo/common/utils/StoreExt.kt
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Arkadii Ivanov
05/14/2022, 7:02 AMYes, this is to decouple UI and the Store (business logic). Also the view model usually contains data in an easy to render format - e.g. strings may be formatted, icons etc. On the other hand, the state may contain additional data for the business logic, such as tokens for pagination, etc.
Arkadii Ivanov
05/14/2022, 7:04 AMIt's not quite possible to put this extension function in a library, because Decompose and MVIkotlin do not depend on each other. Adding additional dependencies is undesired.
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Lawrence
05/14/2022, 6:09 PMGotcha! Maybe a future interop library of some sort? Anyways, really loving your work! Thank you!
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Andrew Steinmetz
05/16/2022, 5:16 PMCouldn't a separate artifact be created that does depend on MVIKotlin with that extension function? Might be a little tedious when that library gets updated to also make sure its updated in decompose. But I would find it helpful because I find myself copying that extension function in every new project I setup with the two. Could also probably add the instance keeper ext in that 🤷
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Arkadii Ivanov
05/16/2022, 5:29 PMAdding a module to either Decompose or MVIKotlin that depends on another library is very undesired. Transitive dependencies may brink additional binary compatibility concerns. However there could be a standalone repository with helpers. I will support if somebody would create such a repository.
Extensions for MVIKotlin and InstanceKeeper are already present in MVIKotlin, because it depends on Essenty anyway.
https://github.com/arkivanov/MVIKotlin/blob/master/mvikotlin/src/commonMain/kotlin/com/arkivanov/mvikotlin/core/instancekeeper/InstanceKeeperExt.kt
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Andrew Steinmetz
05/16/2022, 6:40 PMThat's a good point, another idea might be to just create a template repository to do the basic setup of a decompose/mvi project since I find myself doing a lot of copy paste to setup new projects with all the appropriate dependencies.
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