Swift 标准库文档

结构体

• AnyBidirectionalCollection
  A type-erased wrapper over any collection with indices that support bidirectional traversal.
• AnyBidirectionalIndex
  A wrapper over an underlying BidirectionalIndexType that hides the specific underlying type.
• AnyForwardCollection
  A type-erased wrapper over any collection with indices that support forward traversal.
• AnyForwardIndex
  A wrapper over an underlying ForwardIndexType that hides the specific underlying type.
• AnyGenerator
  A type-erased generator of Element.
• AnyRandomAccessCollection
  A type-erased wrapper over any collection with indices that support random access traversal.
• AnyRandomAccessIndex
  A wrapper over an underlying RandomAccessIndexType that hides the specific underlying type.
• AnySequence
  A type-erased sequence.

• Array

  数组

• ArraySlice
  The Array-like type that represents a sub-sequence of any Array, ContiguousArray, or other ArraySlice.

• AutoreleasingUnsafeMutablePointer
  A mutable pointer-to-ObjC-pointer argument.
• Bool
  A value type whose instances are either true or false.

• COpaquePointer

  不确定类型的指针

• CVaListPointer

  可变参数表指针

• Character

  Unicode 编码字符

• ClosedInterval
  A closed IntervalType, which contains both its start and its end.

• CollectionOfOne
  A collection containing a single element of type Element.

• ContiguousArray
  A fast, contiguously-stored array of Element.
  

  • Dictionary
    

  字典

DictionaryGenerator
A generator over the members of a Dictionary< Key, Value>.

DictionaryIndex
Used to access the key-value pairs in an instance of Dictionary< Key, Value>.

DictionaryLiteral
Represent the ability to pass a dictionary literal in function signatures.

Double

浮点数

EmptyCollection
A collection whose element type is Element but that is always empty.

EmptyGenerator
A generator that never produces an element.

EnumerateGenerator
The GeneratorType for EnumerateSequence.

EnumerateSequence
The SequenceType returned by enumerate().

FlattenBidirectionalCollection
A flattened view of a base collection-of-collections.

FlattenBidirectionalCollectionIndex
A position in a FlattenBidirectionalCollection.

FlattenCollection
A flattened view of a base collection-of-collections.

FlattenCollectionIndex
A position in a FlattenCollection.

FlattenGenerator
A flattened view of a base generator-of-sequences.

FlattenSequence
A flattened view of a base sequence-of-sequences.

Float

浮点数

GeneratorOfOne
A generator that produces one or fewer instances of Element.

GeneratorSequence
A sequence built around a generator of type G.

HalfOpenInterval
A half-open IntervalType, which contains its start but not its end.

IndexingGenerator
A generator for an arbitrary collection.

Int

64比特 有符号整数

Int16

16比特 有符号整数

Int32

32比特 有符号整数

Int64

64比特 有符号整数

Int8

8比特 有符号整数

JoinGenerator
A generator that presents the elements of the sequences generated by Base, concatenated using a given separator.

JoinSequence
A sequence that presents the elements of the Base sequences concatenated using a given separator.

LazyCollection
A collection containing the same elements as a Base collection, but on which some operations such as map and filter are implemented lazily.

LazyFilterCollection
A lazy CollectionType wrapper that includes the elements of an underlying collection that satisfy a predicate.

LazyFilterGenerator
A generator that produces the elements produced by some base generator that also satisfy a given predicate.

LazyFilterIndex
The Index used for subscripting a LazyFilterCollection.

LazyFilterSequence
A sequence whose elements consist of the elements of some base sequence that also satisfy a given predicate.

LazyMapCollection
A CollectionType whose elements consist of those in a Base CollectionType passed through a transform function returning Element.

LazyMapGenerator
The GeneratorType used by MapSequence and MapCollection.

LazyMapSequence
A SequenceType whose elements consist of those in a Base SequenceType passed through a transform function returning Element.

LazySequence
A sequence containing the same elements as a Base sequence, but on which some operations such as map and filter are implemented lazily.

ManagedBufferPointer
Contains a buffer object, and provides access to an instance of Value and contiguous storage for an arbitrary number of Element instances stored in that buffer.

Mirror
Representation of the sub-structure and optional “display style” of any arbitrary subject instance.

MutableSlice
A view into a sub-sequence of elements of another collection.

ObjectIdentifier
A unique identifier for a class instance or metatype.

PermutationGenerator
A generator that adapts a collection C and any sequence of its Index type to present the collection’s elements in a permuted order.

Range

序列

RangeGenerator
A generator over the elements of Range< Element>.

RawByte
A byte-sized thing that isn’t designed to interoperate with any other types; it makes a decent parameter to UnsafeMutablePointer< Memory> when you just want to do bytewise pointer arithmetic.

Repeat
A collection whose elements are all identical Elements.

ReverseCollection
A Collection that presents the elements of its Base collection in reverse order.

ReverseIndex
A wrapper for a BidirectionalIndexType that reverses its direction of traversal.

ReverseRandomAccessCollection
A Collection that presents the elements of its Base collection in reverse order.

ReverseRandomAccessIndex
A wrapper for a RandomAccessIndexType that reverses its direction of traversal.

Set

集合

SetGenerator
A generator over the members of a Set< Element>.

SetIndex
Used to access the members in an instance of Set< Element>.

Slice

切片

StaticString

编译期确定的字符串

StrideThrough
A SequenceType of values formed by striding over a closed interval.

StrideThroughGenerator
A GeneratorType for StrideThrough< Element>.

StrideTo
A SequenceType of values formed by striding over a half-open interval.

StrideToGenerator
A GeneratorType for StrideTo< Element>.

String

Unicode 编码字符串

String.CharacterView
A String’s collection of Characters (extended grapheme clusters) elements.

String.CharacterView.Index
A character position.

String.UTF16View
A collection of UTF-16 code units that encodes a String value.

String.UTF16View.Index
A position in a string’s collection of UTF-16 code units.

String.UTF8View
A collection of UTF-8 code units that encodes a String value.

String.UTF8View.Index
A position in a String.UTF8View.

String.UnicodeScalarView
A collection of Unicode scalar values that encodes a String value.

String.UnicodeScalarView.Generator
A type whose instances can produce the elements of this sequence, in order.

String.UnicodeScalarView.Index
A position in a String.UnicodeScalarView.

Uint

64比特 无符号整数

UInt16

16比特 无符号整数

UInt32

32比特 无符号整数

UInt64

64比特 无符号整数

UInt8

8比特 无符号整数

UTF16

UTF-16 编码

UTF32

UTF-32 编码

UTF8

UTF-8 编码

UnicodeScalar

Unicode 编码

Unmanaged
A type for propagating an unmanaged object reference.

UnsafeBufferPointer

连续内存的常量指针

UnsafeBufferPointerGenerator
A generator for the elements in the buffer referenced by UnsafeBufferPointer or - UnsafeMutableBufferPointer.

UnsafeMutableBufferPointer

连续内存的指针

UnsafeMutablePointer

变量指针

UnsafePointer

常量指针

Zip2Generator
A generator for Zip2Sequence.

Zip2Sequence
A sequence of pairs built out of two underlying sequences, where the elements of the ith pair are the ith elements of each underlying sequence.