CollectionUtils

Utility class to work with collections, inspired by Javascript array methods

Constructors

constructor()

open fun <E> every(@NonNull collection: Collection<E>, @NonNull filter: (E) -> Boolean): Boolean

Check whether all elements of the collection pass the filter

open fun <E> filter(@NonNull collection: Collection<E>, @NonNull filter: (E) -> Boolean): List<E>

Returns a new Array containing only the elements which passed the filter

open fun <E> find(@NonNull collection: Collection<E>, @NonNull filter: (E) -> Boolean): E

Find the first element which passes the filter

open fun <E> findIndex(@NonNull list: List<E>, @NonNull filter: (E) -> Boolean): Int

Find the index of the first element which passes the filter

open fun <E> findLast(@NonNull collection: Collection<E>, @NonNull filter: (E) -> Boolean): E

Find the last element which passes the filter

open fun <E> findLastIndex(@NonNull list: List<E>, @NonNull filter: (E) -> Boolean): Int

Find the index of the last element which passes the filter

open fun <E, R> map(@NonNull collection: Collection<E>, @NonNull transform: (E) -> R): List<R>

Returns a new Array containing the results of the transform function for all elements

open fun <E> partition(@NonNull collection: Collection<E>, @NonNull filter: (E) -> Boolean): Pair<List<E>, List<E>>

Partition the collection into two Arrays.

open fun <E> removeIf(@NonNull collection: Collection<E>, @NonNull filter: (E) -> Boolean): Boolean

Removes all elements from the collection which pass the filter

open fun <E> some(@NonNull collection: Collection<E>, @NonNull filter: (E) -> Boolean): Boolean

Check whether any element of the collection passes the filter

open fun <E> splice(list: List<E>, start: Int): List<E>

Removes all elements after the specified start index

open fun <E> splice(list: List<E>, start: Int, deleteCount: Int, items: Array<E>): List<E>

Removes the specified amount of elements after the specified start index and inserts the specified items