lists library Null safety




emptyList → const List
const []


badArgument<T>({dynamic value, String? name, String? message}) → T
chopList<T>(Iterable<T> items) List<T>
compact<T>(Iterable<T?>? list) List<T>
compareBool<T>(bool toBool(T input)) Comparator<T>
convert<F, T>(F obj, {Transformer<F, T>? converter, Predicate<F>? predicate}) → T?
createIf<T>(bool condition, Factory<T> factory) → T?
distinctBy<T>(Iterable<T>? list, dynamic by(T input)) Iterable<T>
filterKeys<K, V>(Map<K, V> source, bool filter(K key)) Map<K, V>
filterValues<K, V>(Map<K, V> source, bool filter(V value)) Map<K, V>
find<T>(Map<String, T> container, String? id) → T?
firstNonNull<T>([T? a, T? b, T? c, T? d, T? e, T? f]) → T?
groupBy<K, V>(List<V> values, K mappedBy(V item)) Map<K, List<V>>
ifEmpty<T>(Iterable<T>? list, {T? then}) List<T?>
mapExceptFirst<T>(Iterable<T>? list, T map(T t)) List<T>
mapExceptLast<T>(Iterable<T>? list, T map(T t)) List<T>
mapIndexed<R, T>(Iterable<T> input, R mapper(T item, int index)) Iterable<R>
mapOf<K, V>(Iterable<V> values, {required K keyOf(V item)}) Map<K, V>
matchAll<T>() Predicate<T>
notNull<T>() Predicate<T?>
notNullOrBlank() Predicate<String?>
removeElement<T>(Iterable<T>? elements, T toRemove) List<T>
sort<T>(Iterable<T> list, Comparator<T> comparator) Iterable<T>
toList<T>(dynamic value, DynTransformer<T> txr) List<T>
Converts a dynamic json value into a list, using the provided transformer to convert
toMap<T>(dynamic value, DynTransformer<T> txr) Map<String, T>
Converts a dynamic json value into a map, using the provided transformer to convert
wrongType<T>(String name, dynamic value, List<Type> accepted) → T


Predicate<T> = bool Function(T input)