Collection

extension Collection

  • Returns an optional element. If the index does not exist in the collection, the subscript returns nil.

    Declaration

    Swift

    public subscript(safe i: Index) -> Self.Iterator.Element? { get }

    Parameters

    safe

    The index of the element to return, if it exists.

    Return Value

    An optional element from the collection at the specified index.

  • Returns an optional element. If the index does not exist in the collection, the function returns nil.

    Declaration

    Swift

    public func at(_ i: Index) -> Self.Iterator.Element?

    Parameters

    index

    The index of the element to return, if it exists.

    Return Value

    An optional element from the collection at the specified index.