protocolIndexable
| Inheritance | View Protocol Hierarchy → |
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Instance Variables
var endIndex: Self.Index Required
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().
Complexity: O(1)
Declaration
varendIndex:Self.Index{get}
var startIndex: Self.Index Required
The position of the first element in a non-empty collection.
In an empty collection, startIndex == endIndex.
Complexity: O(1)
Declaration
varstartIndex:Self.Index{get}
Subscripts
subscript(_: Self.Index) Required
Declaration
subscript(position:Self.Index) ->Self._Element{get}
A type that represents a valid position in the collection.
Valid indices consist of the position of every element and a "past the end" position that's not valid for use as a subscript.