structString.UnicodeScalarView
| Inheritance |
CollectionType, DebugPrintable, ExtensibleCollectionType, Printable, RangeReplaceableCollectionType, Reflectable, SequenceType, Sliceable, _CollectionType, _ExtensibleCollectionType, _SequenceType, _Sequence_Type, _Sliceable
View Protocol Hierarchy →
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|---|---|
| Associated Types |
Type alias inferred.
Type alias inferred.
Type alias inferred.
Type alias inferred. |
| Nested Types | String.UnicodeScalarView.Index, String.UnicodeScalarView.Generator |
| Import |
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Initializers
Construct an empty instance.
Declaration
init()
Instance Variables
Declaration
vardebugDescription:String{get}
Declaration
vardescription:String{get}
The "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
varendIndex:String.UnicodeScalarView.Index{get}
The position of the first UnicodeScalar if the String is
non-empty; identical to endIndex otherwise.
Declaration
varstartIndex:String.UnicodeScalarView.Index{get}
Subscripts
Declaration
subscript(position:String.UnicodeScalarView.Index) ->UnicodeScalar{get}
Declaration
subscript(r:Range<String.UnicodeScalarView.Index>) ->String.UnicodeScalarView{get}
Instance Methods
Append the elements of newElements to self.
Complexity: O(length of result)
Declaration
mutatingfuncextend<S:SequenceTypewhereUnicodeScalar==UnicodeScalar>(newElements:S)
Return a generator over the UnicodeScalars that comprise
this sequence.
Complexity: O(1)
Declaration
funcgenerate() ->String.UnicodeScalarView.Generator
Insert newElement at index i.
Invalidates all indices with respect to self.
Complexity: O(count(self)).
Declaration
mutatingfuncinsert(newElement:UnicodeScalar,atIndexi:String.UnicodeScalarView.Index)
Remove all elements.
Invalidates all indices with respect to self.
keepCapacity, if true, prevents the release of
allocated storage, which can be a useful optimization
when self is going to be grown again.
Declaration
mutatingfuncremoveAll(keepCapacity:Bool=default)
Remove the and return element at index i
Invalidates all indices with respect to self.
Complexity: O(count(self)).
Declaration
mutatingfuncremoveAtIndex(i:String.UnicodeScalarView.Index) ->UnicodeScalar
Remove the indicated subRange of elements
Invalidates all indices with respect to self.
Complexity: O(count(self)).
Declaration
mutatingfuncremoveRange(subRange:Range<String.UnicodeScalarView.Index>)
Replace the given subRange of elements with newElements.
Invalidates all indices with respect to self.
Complexity: O(count(subRange)) if subRange.endIndex
== self.endIndex and isEmpty(newElements), O(N) otherwise.
Declaration
mutatingfuncreplaceRange<C:CollectionTypewhereUnicodeScalar==UnicodeScalar>(subRange:Range<String.UnicodeScalarView.Index>,withnewElements:C)
Reserve enough space to store n ASCII characters.
Complexity: O(n)
Declaration
mutatingfuncreserveCapacity(n:Int)
Insert newElements at index i
Invalidates all indices with respect to self.
Complexity: O(count(self) + count(newElements)).
Declaration
mutatingfuncsplice<S:CollectionTypewhereUnicodeScalar==UnicodeScalar>(newElements:S,atIndexi:String.UnicodeScalarView.Index)
A collection of Unicode scalar values that encode a
String.