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@abdalin
Last active June 18, 2021 07:42
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import androidx.lifecycle.LiveData
import androidx.lifecycle.MediatorLiveData
class BiSourceMergerLiveData<T, U, R>(
source1: LiveData<T>,
source2: LiveData<U>,
block: (T?, U?) -> R?
) : MediatorLiveData<R>() {
init {
addSource(source1) {
block(it, source2.value)
?.run { value = this }
}
addSource(source2) {
block(source1.value, it)
?.run { value = this }
}
}
}
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