Composable Diff improvements

[terekhovyes]

#40 added syntax to define Diff callback for whole adapter. But you still have no ability to define diff callback for register blocks separately.

There is example of how it may look like:

adapterOf<Animal> {
    register(
        layoutResource = R.layout.item_cat,
        viewHolder = ::CatHolder,
        diff = diff(
            areItemsTheSame = { cat1, cat2 -> cat1.name == cat2.name }
        )
    )

    register(
        layoutResource = R.layout.item_dog,
        viewHolder = ::DogHolder,
        diff = diff(
            areItemsTheSame = { dog1, dog2 -> dog1.bark == dog2.bark }
        )
    )
}

This builder under the hood should create single DiffUtil.Callback with multiple "delegates": one for Cat, one for Dog. Then, when DiffUtil.Callback methods are called, that Callback must pick appropriate "delegate" and call it

[JonibekXolmonov]

Hi sir, is this optimisation still active. May I try it