1、Iterator迭代输出接口(核心) 2、ListIterator双向迭代输出(了解) 3、枚举输出:Enumeration 4、foreach输出 集合的四种输出方式:Iterator、ListIterator、Enumeration、foreach,其中Iterator使用的最多。 1、Iterator迭代输出接口(核心) Iterator是集合输出中最标准
ListIterator和Iterator都有hasNext()和next()方法,可以实现顺序向后遍历,但是ListIterator有hasPrevious()和previous()方法,可以实现逆向(顺序向前)遍历。Iterator就不可以。 ListIterator可以定位当前的索引位置,nextIndex()和previousIndex()可以实现。Iterator没有此功能。 都可实现删除对象,但是ListIterator可以实现对象的...
In Java, all types of enumerations and iterators (such as Iterator, ListIterator, SplitIterator) are simply navigational cursors and the main purpose of these cursors is to iterate over the elements of the collection. Each cursor has its own features, advantages and disadvantages. In this ...
Collection接口的使用类似Vector类,只是方法的名称不同。我们要取出保存在实现Collection接口对象中的所有对象,我们也必须通过Collection.iterator方法返回一个Iterator接口对象,Iterator接口的功能与使用同Enumeration接口非常类似。Java2平台的数据结构类设计人员本可以扩展Enumeration接口,而不用创建Iterator这个新接口。但他们不喜...
enumeration转list Objective-C 和Fast Enumeration抛出异常 如何在Scala中向Enumeration添加方法? 枚举之间的区别<?扩展ZipEntry>和Enumeration <ZipEntry>? Linq Multiple join to 'Only primitive types or enumeration types to‘(仅支持基元类型或枚举类型)错误 ...
asIterator,hasMoreElements,nextElement メソッドの詳細 next Tnext() throwsNamingException 列挙内の次の要素を検索します。このメソッドでは、アプリケーションによって次に取得および処理される要素を検索するときに、ネーミング例外を検出できます。
Enumerates the visibility state between an observer and target in a line of sight analysis LinearUnitId Defines a list of the most commonly-used units of linear measurement LoadStatus Load status for the object LocalItemType Enumerates the type of local item LocalServerStatus Enumerates the statu...
publicvoidMyMethod(IEnumerable<int> input){// If the underlying type of 'input' is List<int>varinputList = (List<int>)input;varcount = inputList.Count();foreach(variininputList) { } } If the underlying type of theIEnumerablecollection uses an iterator-based implementation (for example, ...
BlockLocationIterator BlockPermutation BlockPistonComponent BlockRecordPlayerComponent BlockSignComponent BlockStates BlockStateType BlockType BlockTypes BlockVolume BlockVolumeBase ButtonPushAfterEvent ButtonPushAfterEventSignal Camera ClientSystemInfo CommandResult Component Container ContainerSlot DataDrivenEntityTrigger...
Iterator StatisticsQueryParameters StatisticsQueryResult Stop StretchParameters StretchRenderer StrokeSymbolLayer SublayerSource SubscriptionInfo SubtypeFeatureLayer SubtypeSublayer SubtypeSublayerListModel SuggestListModel SuggestParameters SuggestResult Surface SwatchOptions Symbol SymbolAnchor SymbolLayer SymbolLayerList...