参数标示,根据下标取出的数组,这里真正在block 中遍历的数组,是根据NSindexSet 取到的子数组 - (void)enumerateObjectsAtIndexes:(NSIndexSet...:(NSString *)path atomically:(BOOL)useAuxiliaryFile; 根据indexes 获取一个数组 -(NSArray *)objectsAtIndexes:(NSIndexSet...*)indexes;, NSIndexSet 是一个用来管理 index 的对象。...例子如下: NSArray *array = [NSArray arrayWithObjects:@"wendy",@"andy",@"tom",@"test", nil]; //NSIndexSet...*se = [NSIndexSet indexSetWithIndex:0]; 或者是 NSIndexSet *se = [NSIndexSet indexSetWithIndexesInRange
entryAtIndex:(NSUInteger)index; //通过一组下标获取一组元素的值 - (NSArray M13Generics(ObjectType) *)objectsAtIndices:(NSIndexSet...*)indeces; //通过一组下标获取一组元素的键 - (NSArray M13Generics(KeyType) *)keysAtIndices:(NSIndexSet *)indices; /...通过一组下标获取一组元素 这个方法获取的是有序集合 - (M13OrderedDictionary M13Generics(KeyType, ObjectType) *)entriesAtIndices:(NSIndexSet...id) obj, NSUInteger idx,BOOL *stop))predicate; //在一定下标集合中进行查找 - (NSUInteger)indexOfObjectAtIndices:(NSIndexSet...*stop))predicate; //同上 - (M13_NULLABLE M13GenericType(KeyType, id))keyOfObjectAtIndices:(NSIndexSet
// 一个section刷新 NSIndexSet *indexSet = [[NSIndexSet alloc] initWithIndex:1]; [tableview reloadSections
*)rowIndexes columnIndexes:(NSIndexSet *)columnIndexes; //获取编辑的列 @property (readonly) NSInteger editedColumn...*)rowIndexes atPoint:(NSPoint)mouseDownPoint; - (NSImage *)dragImageForRowsWithIndexes:(NSIndexSet *...)sender; //全不选 用于子类重写 - (void)deselectAll:(nullable id)sender; //进行列选中 - (void)selectColumnIndexes:(NSIndexSet...*)indexes byExtendingSelection:(BOOL)extend; //进行行选中 - (void)selectRowIndexes:(NSIndexSet *)indexes...; //获取所有选中行index @property (readonly, copy) NSIndexSet *selectedRowIndexes; //取消某列的选中 - (void)deselectColumn
aSelector withObject:(nullable id)argument; //获取一个下标集合所对应的元素 - (NSArray *)objectsAtIndexes:(NSIndexSet...BOOL *stop))predicate NS_AVAILABLE(10_6, 4_0); //同上 在一定下标集合中遍历 - (NSUInteger)indexOfObjectAtIndexes:(NSIndexSet...ObjectType obj, NSUInteger idx, BOOL *stop))predicate NS_AVAILABLE(10_6, 4_0); //通过遍历的方式查找所有符合条件的元素下标 - (NSIndexSet...*)indexesOfObjectsAtIndexes:(NSIndexSet *)s options:(NSEnumerationOptions)opts passingTest:(BOOL (^)...:(NSIndexSet *)indexes withObjects:(NSArray *)objects; //设置某个下标对应的元素 子类覆写 - (void)setObject
NSInteger numberOfItems; //获取一组数据对象包含的数据类型 - (nullable NSArray *)pasteboardTypesForItemSet:(nullable NSIndexSet...获取一组数据对象中是否包含某些数据类型 - (BOOL)containsPasteboardTypes:(NSArray *)pasteboardTypes inItemSet:(nullable NSIndexSet... *)itemSet; //根据数据类型获取一组数据对象 - (nullable NSIndexSet *)itemSetWithPasteboardTypes:(NSArray *)pasteboardTypes...根据数据类型获取一组数据的值 - (nullable NSArray *)valuesForPasteboardType:(NSString *)pasteboardType inItemSet:(nullable NSIndexSet...NSData数据 - (nullable NSArray *)dataForPasteboardType:(NSString *)pasteboardType inItemSet:(nullable NSIndexSet
mappingForClass:[Article class]]; [mapping addAttributeMappingsFromArray:@[@"title", @"author", @"body"]]; NSIndexSet...addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:nil toKeyPath:@"errorMessage"]]; NSIndexSet...addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:nil toKeyPath:@"errorMessage"]]; NSIndexSet...:[Article class]]; [mapping addAttributeMappingsFromArray:@[@"title", @"author", @"body"]]; NSIndexSet...:[Article class]]; [mapping addAttributeMappingsFromArray:@[@"title", @"author", @"body"]]; NSIndexSet
= [[UIBezierPath alloc] init]; [path moveToPoint:[[array firstObject] CGPointValue]]; NSIndexSet...*indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(1, [array count] - 1)]; [array enumerateObjectsAtIndexes
changeRequestForAssetCollection:createdCollection]; [request insertAssets:asset atIndexes:[NSIndexSet
//插入新分区 case NSFetchedResultsChangeInsert: [[self tableView] insertSections:[NSIndexSet... //删除分区 case NSFetchedResultsChangeDelete: [[self tableView] deleteSections:[NSIndexSet
代码如下: [_dataArray addObject:chatModel]; [self.tableView insertSections:[NSIndexSet indexSetWithIndex...[_dataArray insertObject:chatModel atIndex:0]; [self.tableView insertSections:[NSIndexSet indexSetWithIndex
*)indexes forKey:(NSString *)key; - (void)didChange:(NSKeyValueChange)changeKind valuesAtIndexes:(NSIndexSet...forKey:(NSString *)key; ③ NSSet对象使用: - (void)willChange:(NSKeyValueChange)changeKind valuesAtIndexes:(NSIndexSet...*)indexes forKey:(NSString *)key; - (void)didChange:(NSKeyValueChange)changeKind valuesAtIndexes:(NSIndexSet...关键方法: - (void)willChange:(NSKeyValueChange)changeKind valuesAtIndexes:(NSIndexSet *)indexes forKey:(NSString...*)key; - (void)didChange:(NSKeyValueChange)changeKind valuesAtIndexes:(NSIndexSet *)indexes forKey:(
//插入一行 public func insertRowsAtIndexes(rows: NSIndexSet, withRowType rowType: String) //删除一行... public func removeRowsAtIndexes(rows: NSIndexSet) //滑动到某一行 public func scrollToRowAtIndex
atIndex:2]; NSLog(@"%@",arr);// A,B,D,C //插入多个元素 NSRange range = NSMakeRange(2, 2); NSIndexSet...*set = [NSIndexSet indexSetWithIndexesInRange:range]; [arr insertObjects:@[@"H",@"G"] atIndexes:
4 NSIndexSet使用 1.NSIndexSet是什么? NSIndexSet 是个无符号整数集合。集合中的元素不可变的、不可重复。常被用来当作索引使用。就从它字面上理解,就叫做:索引集合。...2.NSIndexSet的一些常用方法。 类方法: 创建一个空的索引集合。...判断索引集合中是否包含制定的索引值 - (BOOL)containsIndex:(NSUInteger)index 判断索引集合是否包含指定的indexSet - (BOOL)containsIndexes:(NSIndexSet...- (NSUInteger)count 返回indexRange中包含的索引数量 - (NSUInteger)countOfIndexesInRange:(NSRange)indexRange 枚举NSIndexSet...range options:(NSEnumerationOptions)opts usingBlock:(void (^)(NSUInteger idx, BOOL *stop))block 如果,要枚举的NSIndexSet
forKey: "isVisible") } } getIndicesOfVisibleRows() tblExpandable.reloadSections(NSIndexSet...idCellValuePicker" { } } getIndicesOfVisibleRows() tblExpandable.reloadSections(NSIndexSet...isVisible") } } } getIndicesOfVisibleRows() tblExpandable.reloadSections(NSIndexSet...cellDescriptors[2][1].setValue(newSliderValue, forKey: "value") tblExpandable.reloadSections(NSIndexSet
UICollectionViewScrollPosition)scrollPosition animated:(BOOL)animated; //下面这些方法用于动态添加,删除,移动某些分区获取items - (void)insertSections:(NSIndexSet... *)sections; - (void)deleteSections:(NSIndexSet *)sections; - (void)reloadSections:(NSIndexSet *)sections
四、tableView操作刷新块的应用 在介绍动画块之前,我们先看几个函数: 插入分区 - (void)insertSections:(NSIndexSet *)sections withRowAnimation... UITableViewRowAnimationAutomatic = 100 // 自动选择合适的动画 }; 删除分区 - (void)deleteSections:(NSIndexSet...*)sections withRowAnimation:(UITableViewRowAnimation)animation; 重载一个分区 - (void)reloadSections:(NSIndexSet
case NSFetchedResultsChangeInsert: // 插入了section [_tableView insertSections:[NSIndexSet...case NSFetchedResultsChangeDelete: // 删除了section [_tableView deleteSections:[NSIndexSet
weakSelf = self; WS(weakSelf) sView.btnBlock = ^(NSInteger idx){ [weakSelf.tableView reloadSections:[NSIndexSet
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