Instance Method

indexes(passingTest:)

Returns an NSIndexSet containing the receiving index set’s objects that pass the Block test.

Declaration

func indexes(passingTest predicate: (Int, UnsafeMutablePointer<ObjCBool>) -> Bool) -> IndexSet

Parameters

predicate

The Block to apply to elements in the set.

The Block takes two arguments:

idx

The index of the object.

stop

A reference to a Boolean value. The block can set the value to true to stop further processing of the set. The stop argument is an out-only argument. You should only ever set this Boolean to YES within the Block.

The Block returns a Boolean value that indicates whether obj passed the test.

Return Value

An NSIndexSet containing the indexes of the receiving index set that passed the predicate Block test.

See Also

Querying Index Sets

func contains(Int) -> Bool

Indicates whether the index set contains a specific index.

func contains(IndexSet) -> Bool

Indicates whether the receiving index set contains a superset of the indexes in another index set.

func contains(in: NSRange) -> Bool

Indicates whether the index set contains the indexes represented by an index range.

func intersects(in: NSRange) -> Bool

Indicates whether the index set contains any of the indexes in a range.

var count: Int

The number of indexes in the index set.

func countOfIndexes(in: NSRange) -> Int

Returns the number of indexes in the index set that are members of a given range.

func index(passingTest: (Int, UnsafeMutablePointer<ObjCBool>) -> Bool) -> Int

Returns the index of the first object that passes the predicate Block test.

func index(options: NSEnumerationOptions, passingTest: (Int, UnsafeMutablePointer<ObjCBool>) -> Bool) -> Int

Returns the index of the first object that passes the predicate Block test using the specified enumeration options.

func indexes(options: NSEnumerationOptions, passingTest: (Int, UnsafeMutablePointer<ObjCBool>) -> Bool) -> IndexSet

Returns an NSIndexSet containing the receiving index set’s objects that pass the Block test using the specified enumeration options.

func index(in: NSRange, options: NSEnumerationOptions, passingTest: (Int, UnsafeMutablePointer<ObjCBool>) -> Bool) -> Int

Returns the index of the first object in the specified range that passes the predicate Block test.

func indexes(in: NSRange, options: NSEnumerationOptions, passingTest: (Int, UnsafeMutablePointer<ObjCBool>) -> Bool) -> IndexSet

Returns an NSIndexSet containing the receiving index set’s objects in the specified range that pass the Block test.

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