# Deprecated ## Topics ### Deprecated Functions [`async(priority:operation:)`](/documentation/Swift/async(priority:operation:)-2y0dc) Deprecated, available only for source compatibility reasons. [`async(priority:operation:)`](/documentation/Swift/async(priority:operation:)-684z0) Deprecated, available only for source compatibility reasons. [`asyncDetached(priority:operation:)`](/documentation/Swift/asyncDetached(priority:operation:)-6wbk6) Deprecated, available only for source compatibility reasons. [`asyncDetached(priority:operation:)`](/documentation/Swift/asyncDetached(priority:operation:)-79mp7) Deprecated, available only for source compatibility reasons. [`asyncDetached(priority:operation:)`](/documentation/Swift/asyncDetached(priority:operation:)-79mp7) Deprecated, available only for source compatibility reasons. [`detach(priority:operation:)`](/documentation/Swift/detach(priority:operation:)-2h9ty) Deprecated, available only for source compatibility reasons. [`detach(priority:operation:)`](/documentation/Swift/detach(priority:operation:)-4948v) Deprecated, available only for source compatibility reasons. ### Deprecated Type Aliases [`ArrayLiteralConvertible`](/documentation/Swift/ArrayLiteralConvertible) [`BidirectionalIndexable`](/documentation/Swift/BidirectionalIndexable) [`BidirectionalSlice`](/documentation/Swift/BidirectionalSlice) [`BooleanLiteralConvertible`](/documentation/Swift/BooleanLiteralConvertible) [`ClosedRangeIndex`](/documentation/Swift/ClosedRangeIndex) [`CustomPlaygroundQuickLookable`](/documentation/Swift/CustomPlaygroundQuickLookable) A type that explicitly supplies its own playground Quick Look. [`DefaultBidirectionalIndices`](/documentation/Swift/DefaultBidirectionalIndices) [`DefaultRandomAccessIndices`](/documentation/Swift/DefaultRandomAccessIndices) [`DictionaryIterator`](/documentation/Swift/DictionaryIterator) [`DictionaryLiteralConvertible`](/documentation/Swift/DictionaryLiteralConvertible) [`EmptyIterator`](/documentation/Swift/EmptyIterator) [`ExtendedGraphemeClusterLiteralConvertible`](/documentation/Swift/ExtendedGraphemeClusterLiteralConvertible) [`FlattenBidirectionalCollectionIndex`](/documentation/Swift/FlattenBidirectionalCollectionIndex) [`FlattenBidirectionalCollection`](/documentation/Swift/FlattenBidirectionalCollection) [`FlattenCollectionIndex`](/documentation/Swift/FlattenCollectionIndex) [`FloatLiteralConvertible`](/documentation/Swift/FloatLiteralConvertible) [`IndexableBase`](/documentation/Swift/IndexableBase) [`Indexable`](/documentation/Swift/Indexable) [`IntegerLiteralConvertible`](/documentation/Swift/IntegerLiteralConvertible) [`IteratorOverOne`](/documentation/Swift/IteratorOverOne) [`JoinedIterator`](/documentation/Swift/JoinedIterator) [`LazyBidirectionalCollection`](/documentation/Swift/LazyBidirectionalCollection) [`LazyDropWhileBidirectionalCollection`](/documentation/Swift/LazyDropWhileBidirectionalCollection) [`LazyDropWhileIndex`](/documentation/Swift/LazyDropWhileIndex) [`LazyDropWhileIterator`](/documentation/Swift/LazyDropWhileIterator) [`LazyFilterBidirectionalCollection`](/documentation/Swift/LazyFilterBidirectionalCollection) [`LazyFilterIndex`](/documentation/Swift/LazyFilterIndex) [`LazyFilterIterator`](/documentation/Swift/LazyFilterIterator) [`LazyMapBidirectionalCollection`](/documentation/Swift/LazyMapBidirectionalCollection) [`LazyMapIterator`](/documentation/Swift/LazyMapIterator) [`LazyMapRandomAccessCollection`](/documentation/Swift/LazyMapRandomAccessCollection) [`LazyPrefixWhileBidirectionalCollection`](/documentation/Swift/LazyPrefixWhileBidirectionalCollection) [`LazyPrefixWhileIndex`](/documentation/Swift/LazyPrefixWhileIndex) [`LazyPrefixWhileIterator`](/documentation/Swift/LazyPrefixWhileIterator) [`LazyRandomAccessCollection`](/documentation/Swift/LazyRandomAccessCollection) [`MutableBidirectionalSlice`](/documentation/Swift/MutableBidirectionalSlice) [`MutableIndexable`](/documentation/Swift/MutableIndexable) [`MutableRandomAccessSlice`](/documentation/Swift/MutableRandomAccessSlice) [`MutableRangeReplaceableBidirectionalSlice`](/documentation/Swift/MutableRangeReplaceableBidirectionalSlice) [`MutableRangeReplaceableRandomAccessSlice`](/documentation/Swift/MutableRangeReplaceableRandomAccessSlice) [`MutableRangeReplaceableSlice`](/documentation/Swift/MutableRangeReplaceableSlice) [`MutableSlice`](/documentation/Swift/MutableSlice) [`NilLiteralConvertible`](/documentation/Swift/NilLiteralConvertible) [`RandomAccessIndexable`](/documentation/Swift/RandomAccessIndexable) [`RandomAccessSlice`](/documentation/Swift/RandomAccessSlice) [`RangeReplaceableBidirectionalSlice`](/documentation/Swift/RangeReplaceableBidirectionalSlice) [`RangeReplaceableIndexable`](/documentation/Swift/RangeReplaceableIndexable) [`RangeReplaceableRandomAccessSlice`](/documentation/Swift/RangeReplaceableRandomAccessSlice) [`RangeReplaceableSlice`](/documentation/Swift/RangeReplaceableSlice) [`ReversedIndex`](/documentation/Swift/ReversedIndex) [`ReversedRandomAccessCollection`](/documentation/Swift/ReversedRandomAccessCollection) [`StringInterpolationConvertible`](/documentation/Swift/StringInterpolationConvertible) [`StringLiteralConvertible`](/documentation/Swift/StringLiteralConvertible) [`UnicodeScalarLiteralConvertible`](/documentation/Swift/UnicodeScalarLiteralConvertible) [`UnsafeBufferPointerIterator`](/documentation/Swift/UnsafeBufferPointerIterator) [`UnsafeMutableRawBufferPointerIterator`](/documentation/Swift/UnsafeMutableRawBufferPointerIterator) [`UnsafeRawBufferPointerIterator`](/documentation/Swift/UnsafeRawBufferPointerIterator) [`Zip2Iterator`](/documentation/Swift/Zip2Iterator) --- Copyright © 2026 Apple Inc. 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