# RangeReplaceableCollection Implementations ## Topics ### Operators [`static func + (Self, Other) -> Self`](/documentation/Swift/Slice/+(_:_:)-298al) Creates a new collection by concatenating the elements of a collection and a sequence. [`static func + (Other, Self) -> Self`](/documentation/Swift/Slice/+(_:_:)-4resp) Creates a new collection by concatenating the elements of a sequence and a collection. [`static func + (Self, Other) -> Self`](/documentation/Swift/Slice/+(_:_:)-99wuu) Creates a new collection by concatenating the elements of two collections. [`static func += (inout Self, Other)`](/documentation/Swift/Slice/+=(_:_:)) Appends the elements of a sequence to a range-replaceable collection. ### Initializers [`init()`](/documentation/Swift/Slice/init()) Creates a new, empty collection. [`init(S)`](/documentation/Swift/Slice/init(_:)) Creates a new instance of a collection containing the elements of a sequence. [`init(S)`](/documentation/Swift/Slice/init(_:)-81eoy) Creates a new instance of a collection containing the elements of a sequence. [`init(repeating: Base.Element, count: Int)`](/documentation/Swift/Slice/init(repeating:count:)) Creates a new collection containing the specified number of a single, repeated value. [`init(repeating: Self.Element, count: Int)`](/documentation/Swift/Slice/init(repeating:count:)-6ps2q) Creates a new collection containing the specified number of a single, repeated value. ### Instance Methods [`func append(Self.Element)`](/documentation/Swift/Slice/append(_:)) Adds an element to the end of the collection. [`func append(contentsOf: S)`](/documentation/Swift/Slice/append(contentsOf:)) Adds the elements of a sequence or collection to the end of this collection. [`func applying(CollectionDifference) -> Self?`](/documentation/Swift/Slice/applying(_:)) Applies the given difference to this collection. [`func filter((Self.Element) throws(E) -> Bool) throws(E) -> Self`](/documentation/Swift/Slice/filter(_:)-9rk6d) Returns a new collection of the same type containing, in order, the elements of the original collection that satisfy the given predicate. [`func insert(Base.Element, at: Slice.Index)`](/documentation/Swift/Slice/insert(_:at:)-6sg0) Inserts a new element into the collection at the specified position. [`func insert(Self.Element, at: Self.Index)`](/documentation/Swift/Slice/insert(_:at:)-8i1dc) Inserts a new element into the collection at the specified position. [`func insert(contentsOf: S, at: Slice.Index)`](/documentation/Swift/Slice/insert(contentsOf:at:)-25pep) Inserts the elements of a sequence into the collection at the specified position. [`func insert(contentsOf: C, at: Self.Index)`](/documentation/Swift/Slice/insert(contentsOf:at:)-2xj4m) Inserts the elements of a sequence into the collection at the specified position. [`func popLast() -> Self.Element?`](/documentation/Swift/Slice/popLast()-30m9y) Removes and returns the last element of the collection. [`func popLast() -> Self.Element?`](/documentation/Swift/Slice/popLast()-4rely) Removes and returns the last element of the collection. [`func remove(at: Slice.Index) -> Base.Element`](/documentation/Swift/Slice/remove(at:)-7ep9e) Removes and returns the element at the specified position. [`func remove(at: Self.Index) -> Self.Element`](/documentation/Swift/Slice/remove(at:)-7xja6) Removes and returns the element at the specified position. [`func removeAll(keepingCapacity: Bool)`](/documentation/Swift/Slice/removeAll(keepingCapacity:)) Removes all elements from the collection. [`func removeAll(where: (Self.Element) throws -> Bool) rethrows`](/documentation/Swift/Slice/removeAll(where:)-26lr3) Removes all the elements that satisfy the given predicate. [`func removeAll(where: (Self.Element) throws -> Bool) rethrows`](/documentation/Swift/Slice/removeAll(where:)-9u7g) Removes all the elements that satisfy the given predicate. [`func removeFirst() -> Self.Element`](/documentation/Swift/Slice/removeFirst()-1iayr) Removes and returns the first element of the collection. [`func removeFirst() -> Self.Element`](/documentation/Swift/Slice/removeFirst()-3eija) Removes and returns the first element of the collection. [`func removeFirst(Int)`](/documentation/Swift/Slice/removeFirst(_:)-1pxgx) Removes the specified number of elements from the beginning of the collection. [`func removeFirst(Int)`](/documentation/Swift/Slice/removeFirst(_:)-7hjja) Removes the specified number of elements from the beginning of the collection. [`func removeLast() -> Self.Element`](/documentation/Swift/Slice/removeLast()-5mmgh) Removes and returns the last element of the collection. [`func removeLast() -> Self.Element`](/documentation/Swift/Slice/removeLast()-wsbc) Removes and returns the last element of the collection. [`func removeLast(Int)`](/documentation/Swift/Slice/removeLast(_:)-75mgx) Removes the specified number of elements from the end of the collection. [`func removeLast(Int)`](/documentation/Swift/Slice/removeLast(_:)-fxm2) Removes the specified number of elements from the end of the collection. [`func removeSubrange(R)`](/documentation/Swift/Slice/removeSubrange(_:)-1y2qo) Removes the elements in the specified subrange from the collection. [`func removeSubrange(Range.Index>)`](/documentation/Swift/Slice/removeSubrange(_:)-7s7x9) Removes the specified subrange of elements from the collection. [`func removeSubrange(Range)`](/documentation/Swift/Slice/removeSubrange(_:)-8m66i) Removes the elements in the specified subrange from the collection. [`func removeSubranges(RangeSet)`](/documentation/Swift/Slice/removeSubranges(_:)-2ncra) Removes the elements at the given indices. [`func replaceSubrange(Range, with: C)`](/documentation/Swift/Slice/replaceSubrange(_:with:)-8l6gb) Replaces the specified subrange of elements with the given collection. [`func replaceSubrange(R, with: C)`](/documentation/Swift/Slice/replaceSubrange(_:with:)-9le44) Replaces the specified subrange of elements with the given collection. [`func replaceSubrange(Range.Index>, with: C)`](/documentation/Swift/Slice/replaceSubrange(_:with:)-zwfk) Replaces the specified subrange of elements with the given collection. [`func reserveCapacity(Int)`](/documentation/Swift/Slice/reserveCapacity(_:)) Prepares the collection to store the specified number of elements, when doing so is appropriate for the underlying type. --- Copyright © 2026 Apple Inc. 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