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40 lines
1.6 KiB
Objective-C
40 lines
1.6 KiB
Objective-C
//
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// NSIndexSet+ASHelpers.h
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// Texture
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
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// grant of patent rights can be found in the PATENTS file in the same directory.
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//
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// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
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// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <Foundation/Foundation.h>
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@interface NSIndexSet (ASHelpers)
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- (NSIndexSet *)as_indexesByMapping:(NSUInteger (^)(NSUInteger idx))block;
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- (NSIndexSet *)as_intersectionWithIndexes:(NSIndexSet *)indexes;
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/// Returns all the item indexes from the given index paths that are in the given section.
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+ (NSIndexSet *)as_indexSetFromIndexPaths:(NSArray<NSIndexPath *> *)indexPaths inSection:(NSUInteger)section;
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/// 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.
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- (NSUInteger)as_indexChangeByInsertingItemsBelowIndex:(NSUInteger)index;
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- (NSString *)as_smallDescription;
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/// Returns all the section indexes contained in the index paths array.
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+ (NSIndexSet *)as_sectionsFromIndexPaths:(NSArray<NSIndexPath *> *)indexPaths;
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- (NSArray<NSIndexPath *> *)as_filterIndexPathsBySection:(id<NSFastEnumeration>)indexPaths;
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@end
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