A collection of rows in a data table.
SDKs
- macOS 10.14+
- Xcode 10.0+
Framework
- Create ML
Declaration
struct Rows
A collection of rows in a data table.
SDKs
Framework
struct Rows
var is Empty: Bool
A Boolean value indicating whether the collection is empty.
var count: Int
The number of elements in the collection.
var first: MLData Table .Row?
The first element of the collection.
var last: MLData Table .Row?
The last element of the collection.
func random Element() -> MLData Table .Row?
Returns a random element of the collection.
func random Element<T>(using: inout T) -> MLData Table .Row?
Returns a random element of the collection, using the given generator as a source for randomness.
subscript(Range<Int>) -> Slice<MLData Table .Rows>
Accesses a contiguous subrange of the collection’s elements.
subscript<R>(R) -> Slice<MLData Table .Rows>
Accesses the contiguous subrange of the collection’s elements specified by a range expression.
func contains(MLData Table .Row) -> Bool
Returns a Boolean value indicating whether the sequence contains the given element.
func contains(where: (MLData Table .Row) -> Bool) -> Bool
Returns a Boolean value indicating whether the sequence contains an element that satisfies the given predicate.
func all Satisfy((MLData Table .Row) -> Bool) -> Bool
Returns a Boolean value indicating whether every element of a sequence satisfies a given predicate.
func first(where: (MLData Table .Row) -> Bool) -> MLData Table .Row?
Returns the first element of the sequence that satisfies the given predicate.
func first Index(of: MLData Table .Row) -> Int?
Returns the first index where the specified value appears in the collection.
func first Index(where: (MLData Table .Row) -> Bool) -> Int?
Returns the first index in which an element of the collection satisfies the given predicate.
func last(where: (MLData Table .Row) -> Bool) -> MLData Table .Row?
Returns the last element of the sequence that satisfies the given predicate.
func last Index(of: MLData Table .Row) -> Int?
Returns the last index where the specified value appears in the collection.
func last Index(where: (MLData Table .Row) -> Bool) -> Int?
Returns the index of the last element in the collection that matches the given predicate.
func min(by: (MLData Table .Row, MLData Table .Row) -> Bool) -> MLData Table .Row?
Returns the minimum element in the sequence, using the given predicate as the comparison between elements.
func max(by: (MLData Table .Row, MLData Table .Row) -> Bool) -> MLData Table .Row?
Returns the maximum element in the sequence, using the given predicate as the comparison between elements.
func filter((MLData Table .Row) -> Bool) -> [MLData Table .Row]
Returns an array containing, in order, the elements of the sequence that satisfy the given predicate.
func prefix(Int) -> Slice<MLData Table .Rows>
Returns a subsequence, up to the specified maximum length, containing the initial elements of the collection.
func prefix(through: Int) -> Slice<MLData Table .Rows>
Returns a subsequence from the start of the collection through the specified position.
func prefix(up To: Int) -> Slice<MLData Table .Rows>
Returns a subsequence from the start of the collection up to, but not including, the specified position.
func prefix(while: (MLData Table .Row) -> Bool) -> Slice<MLData Table .Rows>
Returns a subsequence containing the initial elements until predicate
returns false
and skipping the remaining elements.
func suffix(Int) -> Slice<MLData Table .Rows>
Returns a subsequence, up to the given maximum length, containing the final elements of the collection.
func suffix(from: Int) -> Slice<MLData Table .Rows>
Returns a subsequence from the specified position to the end of the collection.
func drop First(Int) -> Slice<MLData Table .Rows>
Returns a subsequence containing all but the given number of initial elements.
func drop Last(Int) -> Slice<MLData Table .Rows>
Returns a subsequence containing all but the specified number of final elements.
func drop(while: (MLData Table .Row) -> Bool) -> Slice<MLData Table .Rows>
Returns a subsequence by skipping elements while predicate
returns true
and returning the remaining elements.
func compact Map<Element Of Result>((MLData Table .Row) -> Element Of Result?) -> [Element Of Result]
Returns an array containing the non-nil
results of calling the given transformation with each element of this sequence.
func reduce<Result>(Result, (Result, MLData Table .Row) -> Result) -> Result
Returns the result of combining the elements of the sequence using the given closure.
var lazy: Lazy Sequence<MLData Table .Rows>
A sequence containing the same elements as this sequence, but on which some operations, such as map
and filter
, are implemented lazily.
func for Each((MLData Table .Row) -> Void)
Calls the given closure on each element in the sequence in the same order as a for
-in
loop.
func enumerated() -> Enumerated Sequence<MLData Table .Rows>
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 make Iterator() -> Indexing Iterator<MLData Table .Rows>
Returns an iterator over the elements of the collection.
func sorted(by: (MLData Table .Row, MLData Table .Row) -> Bool) -> [MLData Table .Row]
Returns the elements of the sequence, sorted using the given predicate as the comparison between elements.
func reversed() -> Reversed Collection<MLData Table .Rows>
Returns a view presenting the elements of the collection in reverse order.
func shuffled() -> [MLData Table .Row]
Returns the elements of the sequence, shuffled.
func shuffled<T>(using: inout T) -> [MLData Table .Row]
Returns the elements of the sequence, shuffled using the given generator as a source for randomness.
func split(separator: MLData Table .Row, max Splits: Int, omitting Empty Subsequences: Bool) -> [Slice<MLData Table .Rows>]
Returns the longest possible subsequences of the collection, in order, around elements equal to the given element.
func split(max Splits: Int, omitting Empty Subsequences: Bool, where Separator: (MLData Table .Row) -> Bool) -> [Slice<MLData Table .Rows>]
Returns the longest possible subsequences of the collection, in order, that don’t contain elements satisfying the given predicate.
func joined<Separator>(separator: Separator) -> Joined Sequence<MLData Table .Rows>
Returns the concatenated elements of this sequence of sequences, inserting the given separator between each element.
func elements Equal<Other Sequence>(Other Sequence) -> Bool
Returns a Boolean value indicating whether this sequence and another sequence contain the same elements in the same order.
func elements Equal<Other Sequence>(Other Sequence, by: (MLData Table .Row, Other Sequence .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 starts<Possible Prefix>(with: Possible Prefix) -> 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: Possible Prefix, by: (MLData Table .Row, Possible Prefix .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 lexicographically Precedes<Other Sequence>(Other Sequence, by: (MLData Table .Row, MLData Table .Row) -> 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 index(after: Int) -> Int
Returns the position immediately after the given index.
func form Index(after: inout Int)
Replaces the given index with its successor.
func index(before: Int) -> Int
Returns the position immediately after the given index.
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 form Index(inout Int, offset By: Int)
Offsets the given index by the specified distance.
func index(Int, offset By: Int, limited By: Int) -> Int?
Returns an index that is the specified distance from the given index, unless that distance is beyond a given limiting index.
func form Index(inout Int, offset By: Int, limited By: Int) -> Bool
Offsets the given index by the specified distance, or so that it equals the given limiting index.
func distance(from: Int, to: Int) -> Int
Returns the distance between two indices.
var indices: Range<Int>
The indices that are valid for subscripting the collection, in ascending order.
struct MLData Table .Row
A row of untyped values in a data table.
var underestimated Count: Int
A value less than or equal to the number of elements in the collection.
func difference<C>(from: C) -> Collection Difference<MLData Table .Row>
Returns the difference needed to produce this collection’s ordered elements from the given collection.
func difference<C>(from: C, by: (C .Element, MLData Table .Row) -> Bool) -> Collection Difference<MLData Table .Row>
Returns the difference needed to produce this collection’s ordered elements from the given collection, using the given predicate as an equivalence test.
func flat Map<Segment Of Result>((MLData Table .Row) -> Segment Of Result) -> [Segment Of Result .Element]
Returns an array containing the concatenated results of calling the given transformation with each element of this sequence.
func index(of: MLData Table .Row) -> Int?
Returns the first index where the specified value appears in the collection.
func index(where: (MLData Table .Row) -> Bool) -> Int?
Returns the first index in which an element of the collection satisfies the given predicate.
func joined() -> Flatten Sequence<MLData Table .Rows>
Returns the elements of this sequence of sequences, concatenated.
func map<T>((MLData Table .Row) -> T) -> [T]
Returns an array containing the results of mapping the given closure over the sequence’s elements.
func reduce<Result>(into: Result, (inout Result, MLData Table .Row) -> ()) -> Result
Returns the result of combining the elements of the sequence using the given closure.
func with Contiguous Storage If Available<R>((Unsafe Buffer Pointer<MLData Table .Row>) -> 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.
var rows: MLData Table .Rows
The rows of data in the table.