Swiftgram/AsyncDisplayKit/Details/NSIndexSet+ASHelpers.h
2016-06-24 11:12:37 -07:00

26 lines
805 B
Objective-C

//
// NSIndexSet+ASHelpers.h
// AsyncDisplayKit
//
// Created by Adlai Holler on 6/23/16.
// Copyright © 2016 Facebook. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface NSIndexSet (ASHelpers)
- (NSIndexSet *)as_indexesByMapping:(NSUInteger (^)(NSUInteger idx))block;
- (NSIndexSet *)as_intersectionWithIndexes:(NSIndexSet *)indexes;
/// Returns all the item indexes from the given index paths that are in the given section.
+ (NSIndexSet *)as_indexSetFromIndexPaths:(NSArray<NSIndexPath *> *)indexPaths inSection:(NSUInteger)section;
/// If you've got an old index, and you insert items using this index set, this returns the change to get to the new index.
- (NSUInteger)as_indexChangeByInsertingItemsBelowIndex:(NSUInteger)index;
- (NSString *)as_smallDescription;
@end