kotlin-stdlib/kotlin.collections/removeAll

removeAll

inline fun <T> MutableCollection<out T>.removeAll(elements: Collection<T>): Boolean
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Removes all of this collection's elements that are also contained in the specified collection.

Allows to overcome type-safety restriction of removeAll that requires to pass a collection of type Collection<E>.

Return

true if any of the specified elements was removed from the collection, false if the collection was not modified.


fun <T> MutableCollection<in T>.removeAll(elements: Iterable<T>): Boolean
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Removes all elements from this MutableCollection that are also contained in the given elements collection.


fun <T> MutableCollection<in T>.removeAll(elements: Sequence<T>): Boolean
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Removes all elements from this MutableCollection that are also contained in the given elements sequence.


fun <T> MutableCollection<in T>.removeAll(elements: Array<out T>): Boolean
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Removes all elements from this MutableCollection that are also contained in the given elements array.


fun <T> MutableIterable<T>.removeAll(predicate: (T) -> Boolean): Boolean
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Removes all elements from this MutableIterable that match the given predicate.

Return

true if any element was removed from this collection, or false when no elements were removed and collection was not modified.


fun <T> MutableList<T>.removeAll(predicate: (T) -> Boolean): Boolean
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Removes all elements from this MutableList that match the given predicate.

Return

true if any element was removed from this collection, or false when no elements were removed and collection was not modified.