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Merge branch 'charlesmchen/incrementalDiffOrdering'
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commit
dfc7b032b9
1 changed files with 5 additions and 5 deletions
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@ -654,13 +654,13 @@ static const int kYapDatabaseRangeMinLength = 0;
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NSSet<NSString *> *newItemIdSet = [NSSet setWithArray:newItemIdList];
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// We use sets and dictionaries here to ensure perf.
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NSMutableSet<NSString *> *deletedItemIdSet = [oldItemIdSet mutableCopy];
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// We use NSMutableOrderedSet to preserve item ordering.
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NSMutableOrderedSet<NSString *> *deletedItemIdSet = [NSMutableOrderedSet orderedSetWithArray:oldItemIdList];
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[deletedItemIdSet minusSet:newItemIdSet];
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NSMutableSet<NSString *> *insertedItemIdSet = [newItemIdSet mutableCopy];
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NSMutableOrderedSet<NSString *> *insertedItemIdSet = [NSMutableOrderedSet orderedSetWithArray:newItemIdList];
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[insertedItemIdSet minusSet:oldItemIdSet];
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NSArray<NSString *> *deletedItemIdList = [deletedItemIdSet.allObjects sortedArrayUsingSelector:@selector(compare:)];
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NSArray<NSString *> *insertedItemIdList =
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[insertedItemIdSet.allObjects sortedArrayUsingSelector:@selector(compare:)];
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NSArray<NSString *> *deletedItemIdList = [deletedItemIdSet.array copy];
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NSArray<NSString *> *insertedItemIdList = [insertedItemIdSet.array copy];
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// Try to generate a series of "update items" that safely transform
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// the "old item list" into the "new item list".
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