Results

public final class Results<T: Object>: ResultsBase

Results is an auto-updating container type in Realm returned from object queries.

Results can be queried with the same predicates as List<T> and you can chain queries to further filter query results.

Results cannot be created directly.

Properties

  • Returns the object at the given index.

    Declaration

    Swift

    public subscript(index: Int) -> T

    Parameters

    index

    The index.

    Return Value

    The object at the given index.

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  • Element type contained in this collection.

    Declaration

    Swift

    public typealias Element = T
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  • Returns the Realm these results are associated with. Despite returning an Optional<Realm> in order to conform to RealmCollectionType, it will always return .Some() since a Results cannot exist independently from a Realm.

    Declaration

    Swift

    public var realm: Realm? { return Realm(rlmResults.realm) }
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  • Returns the number of objects in these results.

    Declaration

    Swift

    public var count: Int { return Int(rlmResults.count) }
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Index Retrieval

  • Returns the index of the given object, or nil if the object is not in the results.

    Declaration

    Swift

    public func indexOf(object: T) -> Int?

    Parameters

    object

    The object whose index is being queried.

    Return Value

    The index of the given object, or nil if the object is not in the results.

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  • Returns the index of the first object matching the given predicate, or nil if no objects match.

    Declaration

    Swift

    public func indexOf(predicate: NSPredicate) -> Int?

    Parameters

    predicate

    The predicate to filter the objects.

    Return Value

    The index of the first matching object, or nil if no objects match.

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  • Returns the index of the first object matching the given predicate, or nil if no objects match.

    Declaration

    Swift

    public func indexOf(predicateFormat: String, _ args: AnyObject...) -> Int?

    Parameters

    predicateFormat

    The predicate format string which can accept variable arguments.

    Return Value

    The index of the first matching object, or nil if no objects match.

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Object Retrieval

  • Returns the first object in the results, or nil if empty.

    Declaration

    Swift

    public var first: T? { return unsafeBitCast(rlmResults.firstObject(), Optional<T>.self) }
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  • Returns the last object in the results, or nil if empty.

    Declaration

    Swift

    public var last: T? { return unsafeBitCast(rlmResults.lastObject(), Optional<T>.self) }
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KVC

  • Returns an Array containing the results of invoking valueForKey(_:) using key on each of the collection’s objects.

    Declaration

    Swift

    public override func valueForKey(key: String) -> AnyObject?

    Parameters

    key

    The name of the property.

    Return Value

    Array containing the results of invoking valueForKey(_:) using key on each of the collection’s objects.

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  • Invokes setValue(_:forKey:) on each of the collection’s objects using the specified value and key.

    Warning

    This method can only be called during a write transaction.

    Declaration

    Swift

    public override func setValue(value: AnyObject?, forKey key: String)

    Parameters

    value

    The object value.
    key

    The name of the property.
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Filtering

  • Filters the results to the objects that match the given predicate.

    Declaration

    Swift

    public func filter(predicateFormat: String, _ args: AnyObject...) -> Results<T>

    Parameters

    predicateFormat

    The predicate format string which can accept variable arguments.

    Return Value

    Results containing objects that match the given predicate.

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  • Filters the results to the objects that match the given predicate.

    Declaration

    Swift

    public func filter(predicate: NSPredicate) -> Results<T>

    Parameters

    predicate

    The predicate to filter the objects.

    Return Value

    Results containing objects that match the given predicate.

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Sorting

  • Returns Results with elements sorted by the given property name.

    Declaration

    Swift

    public func sorted(property: String, ascending: Bool = true) -> Results<T>

    Parameters

    property

    The property name to sort by.
    ascending

    The direction to sort by.

    Return Value

    Results with elements sorted by the given property name.

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  • Returns Results with elements sorted by the given sort descriptors.

    Declaration

    Swift

    public func sorted<S: SequenceType where S.Generator.Element == SortDescriptor>(sortDescriptors: S) -> Results<T>

    Parameters

    sortDescriptors

    SortDescriptors to sort by.

    Return Value

    Results with elements sorted by the given sort descriptors.

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Aggregate Operations

  • Returns the minimum value of the given property.

    Warning

    Only names of properties of a type conforming to the MinMaxType protocol can be used.

    Declaration

    Swift

    public func min<U: MinMaxType>(property: String) -> U?

    Parameters

    property

    The name of a property conforming to MinMaxType to look for a minimum on.

    Return Value

    The minimum value for the property amongst objects in the Results, or nil if the Results is empty.

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  • Returns the maximum value of the given property.

    Warning

    Only names of properties of a type conforming to the MinMaxType protocol can be used.

    Declaration

    Swift

    public func max<U: MinMaxType>(property: String) -> U?

    Parameters

    property

    The name of a property conforming to MinMaxType to look for a maximum on.

    Return Value

    The maximum value for the property amongst objects in the Results, or nil if the Results is empty.

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  • Returns the sum of the given property for objects in the Results.

    Warning

    Only names of properties of a type conforming to the AddableType protocol can be used.

    Declaration

    Swift

    public func sum<U: AddableType>(property: String) -> U

    Parameters

    property

    The name of a property conforming to AddableType to calculate sum on.

    Return Value

    The sum of the given property over all objects in the Results.

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  • Returns the average of the given property for objects in the Results.

    Warning

    Only names of properties of a type conforming to the AddableType protocol can be used.

    Declaration

    Swift

    public func average<U: AddableType>(property: String) -> U?

    Parameters

    property

    The name of a property conforming to AddableType to calculate average on.

    Return Value

    The average of the given property over all objects in the Results, or nil if the Results is empty.

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Sequence Support

  • Returns a GeneratorOf<T> that yields successive elements in the results.

    Declaration

    Swift

    public func generate() -> RLMGenerator<T>
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Collection Support

  • The position of the first element in a non-empty collection. Identical to endIndex in an empty collection.

    Declaration

    Swift

    public var startIndex: Int { return 0 }
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  • The collection’s past the end position. endIndex is not a valid argument to subscript, and is always reachable from startIndex by zero or more applications of successor().

    Declaration

    Swift

    public var endIndex: Int { return count }
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