No overview available.

SDKs

- iOS 13.0+
- macOS 10.15+
- Mac Catalyst 13.0+
- tvOS 13.0+
- watchOS 6.0+
- Xcode 11.0+

Framework

- Swift
UI

Generic Structure# FetchedResults

No overview available.

SDKs

- iOS 13.0+
- macOS 10.15+
- Mac Catalyst 13.0+
- tvOS 13.0+
- watchOS 6.0+
- Xcode 11.0+

Framework

- Swift
UI

`var count: Int`

The number of elements in the collection.

`var first: Result?`

The first element of the collection.

`var indices: Range<Int>`

The indices that are valid for subscripting the collection, in ascending order.

`var is`Empty : Bool

A Boolean value indicating whether the collection is empty.

`var last: Result?`

The last element of the collection.

`var lazy: Lazy`Sequence<FetchedResults<Result>>

A sequence containing the same elements as this sequence, but on which some operations, such as `map`

and `filter`

, are implemented lazily.

`var underestimated`Count : Int

A value less than or equal to the number of elements in the collection.

`func all`Satisfy ((Result) -> Bool) -> Bool

Returns a Boolean value indicating whether every element of a sequence satisfies a given predicate.

`func compact`Map <ElementOfResult>((Result) -> ElementOfResult?) -> [ElementOfResult]

Returns an array containing the non-`nil`

results of calling the given transformation with each element of this sequence.

`func contains(Result) -> Bool`

Returns a Boolean value indicating whether the sequence contains the given element.

`func contains(where: (Result) -> Bool) -> Bool`

Returns a Boolean value indicating whether the sequence contains an element that satisfies the given predicate.

`func difference<C>(from: C) -> Collection`Difference<Result>

Returns the difference needed to produce this collection’s ordered elements from the given collection.

`func difference<C>(from: C, by: (C`.Element, Result) -> Bool) -> CollectionDifference<Result>

Returns the difference needed to produce this collection’s ordered elements from the given collection, using the given predicate as an equivalence test.

`func distance(from: Int, to: Int) -> Int`

Returns the distance between two indices.

`func drop(while: (Result) -> Bool) -> Slice<Fetched`Results<Result>>

Returns a subsequence by skipping elements while `predicate`

returns `true`

and returning the remaining elements.

`func drop`First (Int) -> Slice<FetchedResults<Result>>

Returns a subsequence containing all but the given number of initial elements.

`func drop`Last (Int) -> Slice<FetchedResults<Result>>

Returns a subsequence containing all but the specified number of final elements.

`func elements`Equal <OtherSequence>(OtherSequence) -> Bool

Returns a Boolean value indicating whether this sequence and another sequence contain the same elements in the same order.

`func elements`Equal <OtherSequence>(OtherSequence, by: (Result, OtherSequence.Element) -> Bool) -> Bool

Returns a Boolean value indicating whether this sequence and another sequence contain equivalent elements in the same order, using the given predicate as the equivalence test.

`func enumerated() -> Enumerated`Sequence<FetchedResults<Result>>

Returns a sequence of pairs (*n*, *x*), where *n* represents a consecutive integer starting at zero and *x* represents an element of the sequence.

`func filter((Result) -> Bool) -> [Result]`

Returns an array containing, in order, the elements of the sequence that satisfy the given predicate.

`func first(where: (Result) -> Bool) -> Result?`

Returns the first element of the sequence that satisfies the given predicate.

`func first`Index (of: Result) -> Int?

Returns the first index where the specified value appears in the collection.

`func first`Index (where: (Result) -> Bool) -> Int?

Returns the first index in which an element of the collection satisfies the given predicate.

`func flat`Map <SegmentOfResult>((Result) -> SegmentOfResult) -> [SegmentOfResult.Element]

Returns an array containing the concatenated results of calling the given transformation with each element of this sequence.

`func for`Each ((Result) -> Void)

Calls the given closure on each element in the sequence in the same order as a `for`

-`in`

loop.

`func form`Index (inout Int, offsetBy : Int)

Offsets the given index by the specified distance.

`func form`Index (inout Int, offsetBy : Int, limitedBy : Int) -> Bool

Offsets the given index by the specified distance, or so that it equals the given limiting index.

`func form`Index (after: inout Int)

Replaces the given index with its successor.

`func form`Index (before: inout Int)

Replaces the given index with its predecessor.

`func index(Int, offset`By : Int) -> Int

Returns an index that is the specified distance from the given index.

`func index(Int, offset`By : Int, limitedBy : Int) -> Int?

Returns an index that is the specified distance from the given index, unless that distance is beyond a given limiting index.

`func index(after: Int) -> Int`

Returns the position immediately after the given index.

`func index(before: Int) -> Int`

Returns the position immediately after the given index.

`func index(of: Result) -> Int?`

Returns the first index where the specified value appears in the collection.

`func index(where: (Result) -> Bool) -> Int?`

Returns the first index in which an element of the collection satisfies the given predicate.

`func joined() -> Flatten`Sequence<FetchedResults<Result>>

Returns the elements of this sequence of sequences, concatenated.

`func joined(separator: String) -> String`

Returns a new string by concatenating the elements of the sequence, adding the given separator between each element.

`func joined<Separator>(separator: Separator) -> Joined`Sequence<FetchedResults<Result>>

Returns the concatenated elements of this sequence of sequences, inserting the given separator between each element.

`func joined(separator: String) -> String`

Returns a new string by concatenating the elements of the sequence, adding the given separator between each element.

`func last(where: (Result) -> Bool) -> Result?`

Returns the last element of the sequence that satisfies the given predicate.

`func last`Index (of: Result) -> Int?

Returns the last index where the specified value appears in the collection.

`func last`Index (where: (Result) -> Bool) -> Int?

Returns the index of the last element in the collection that matches the given predicate.

`func lexicographically`Precedes <OtherSequence>(OtherSequence) -> Bool

Returns a Boolean value indicating whether the sequence precedes another sequence in a lexicographical (dictionary) ordering, using the less-than operator (`<`

) to compare elements.

`func lexicographically`Precedes <OtherSequence>(OtherSequence, by: (Result, Result) -> Bool) -> Bool

Returns a Boolean value indicating whether the sequence precedes another sequence in a lexicographical (dictionary) ordering, using the given predicate to compare elements.

`func make`Iterator () -> IndexingIterator<FetchedResults<Result>>

Returns an iterator over the elements of the collection.

`func map<T>((Result) -> T) -> [T]`

Returns an array containing the results of mapping the given closure over the sequence’s elements.

`func max() -> Result?`

Returns the maximum element in the sequence.

`func max(by: (Result, Result) -> Bool) -> Result?`

Returns the maximum element in the sequence, using the given predicate as the comparison between elements.

`func min() -> Result?`

Returns the minimum element in the sequence.

`func min(by: (Result, Result) -> Bool) -> Result?`

Returns the minimum element in the sequence, using the given predicate as the comparison between elements.

`func prefix(Int) -> Slice<Fetched`Results<Result>>

Returns a subsequence, up to the specified maximum length, containing the initial elements of the collection.

`func prefix(through: Int) -> Slice<Fetched`Results<Result>>

Returns a subsequence from the start of the collection through the specified position.

`func prefix(up`To : Int) -> Slice<FetchedResults<Result>>

Returns a subsequence from the start of the collection up to, but not including, the specified position.

`func prefix(while: (Result) -> Bool) -> Slice<Fetched`Results<Result>>

Returns a subsequence containing the initial elements until `predicate`

returns `false`

and skipping the remaining elements.

`func random`Element () -> Result?

Returns a random element of the collection.

`func random`Element <T>(using: inout T) -> Result?

Returns a random element of the collection, using the given generator as a source for randomness.

`func reduce<Result>(Result, (Result, Result) -> Result) -> Result`

Returns the result of combining the elements of the sequence using the given closure.

`func reduce<Result>(into: Result, (inout Result, Result) -> ()) -> Result`

Returns the result of combining the elements of the sequence using the given closure.

`func reversed() -> Reversed`Collection<FetchedResults<Result>>

Returns a view presenting the elements of the collection in reverse order.

`func shuffled() -> [Result]`

Returns the elements of the sequence, shuffled.

`func shuffled<T>(using: inout T) -> [Result]`

Returns the elements of the sequence, shuffled using the given generator as a source for randomness.

`func sorted() -> [Result]`

Returns the elements of the sequence, sorted.

`func sorted(by: (Result, Result) -> Bool) -> [Result]`

Returns the elements of the sequence, sorted using the given predicate as the comparison between elements.

`func split(max`Splits : Int, omittingEmptySubsequences : Bool, whereSeparator : (Result) -> Bool) -> [Slice<FetchedResults<Result>>]

Returns the longest possible subsequences of the collection, in order, that don’t contain elements satisfying the given predicate.

`func split(separator: Result, max`Splits : Int, omittingEmptySubsequences : Bool) -> [ArraySlice<Result>]

Returns the longest possible subsequences of the sequence, in order, around elements equal to the given element.

`func split(separator: Result, max`Splits : Int, omittingEmptySubsequences : Bool) -> [Slice<FetchedResults<Result>>]

Returns the longest possible subsequences of the collection, in order, around elements equal to the given element.

`func starts<Possible`Prefix>( with: PossiblePrefix) -> Bool

Returns a Boolean value indicating whether the initial elements of the sequence are the same as the elements in another sequence.

`func starts<Possible`Prefix>( with: PossiblePrefix, by: (Result, PossiblePrefix.Element) -> Bool) -> Bool

Returns a Boolean value indicating whether the initial elements of the sequence are equivalent to the elements in another sequence, using the given predicate as the equivalence test.

`func suffix(Int) -> Slice<Fetched`Results<Result>>

Returns a subsequence, up to the given maximum length, containing the final elements of the collection.

`func suffix(from: Int) -> Slice<Fetched`Results<Result>>

Returns a subsequence from the specified position to the end of the collection.

`func with`ContiguousStorageIfAvailable <R>((UnsafeBufferPointer<Result>) -> R) -> R?

Call `body(p)`

, where `p`

is a pointer to the collection’s contiguous storage. If no such storage exists, it is first created. If the collection does not support an internal representation in a form of contiguous storage, `body`

is not called and `nil`

is returned.

`subscript<R>(R) -> Slice<Fetched`Results<Result>>

Accesses the contiguous subrange of the collection’s elements specified by a range expression.

`subscript(Range<Int>) -> Slice<Fetched`Results<Result>>

Accesses a contiguous subrange of the collection’s elements.

`struct Fetch`Request

A property wrapper type that makes fetch requests and retrieves the results from a Core Data store.