class ChosenList<E> : ObservableListBase<E>
ChosenList manages an ObservableList that may be changed by the wrapping ObservableValue. Whenever the underlying ObservableValue changes the exposed list changes to the new value. Changes to the list are simply propagated.
Example: val filteredStates = ChosenList(EasyBind.map(filterCriteriaType) { type -> when (type) { is (ByCurrency) -> statesFilteredByCurrency is (ByIssuer) -> statesFilteredByIssuer } })
The above will create a list that chooses and delegates to the appropriate filtered list based on the type of filter.
<init> |
ChosenList(chosenListObservable: ObservableValue<out ObservableList<out E>>) ChosenList manages an ObservableList that may be changed by the wrapping ObservableValue. Whenever the underlying ObservableValue changes the exposed list changes to the new value. Changes to the list are simply propagated. |
size |
val size: Int |
get |
fun get(index: Int): E |
filter |
fun <A> ObservableList<out A>.filter(predicate: ObservableValue<(A) -> Boolean>): ObservableList<out A> enum class FilterCriterion { HEIGHT, NAME } val filterCriterion: ObservableValue = (..) val people: ObservableList = (..) fun filterFunction(filterCriterion: FilterCriterion): (Person) -> Boolean { .. } |
fold |
fun <A, B> ObservableList<out A>.fold(initial: B, folderFunction: (B, A) -> B): ObservableValue<B> val people: ObservableList = (..) val concatenatedNames = people.fold("", { names, person -> names + person.name }) val concatenatedNames2 = people.map(Person::name).fold("", String::plus) |
indexOfOrThrow |
fun <T> List<T>.indexOfOrThrow(item: T): Int Returns the index of the given item or throws IllegalArgumentException if not found. |
map |
fun <A, B> ObservableList<out A>.map(function: (A) -> B): ObservableList<B> val dogs: ObservableList = (..) val dogOwners: ObservableList = dogs.map { it.owner } |
noneOrSingle |
fun <T> Iterable<T>.noneOrSingle(predicate: (T) -> Boolean): T? Returns the single element matching the given predicate, or fun <T> Iterable<T>.noneOrSingle(): T? Returns single element, or |