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erickva/Arrays_Sort_Rem_Duplicates.m

Created June 28, 2016 23:20
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Delete Duplicates and Sort Array of Objects in Objective-C
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Arrays_Sort_Rem_Duplicates.m
NSOrderedSet *orderedSet = [NSOrderedSet orderedSetWithArray:_lastMessages];
NSArray *arrayWithoutDuplicates = [orderedSet array];
NSSortDescriptor *dateDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"date_" ascending:YES];
NSArray *sortDescriptors = [NSArray arrayWithObject:dateDescriptor];
NSArray *sortedEventArray = [arrayWithoutDuplicates sortedArrayUsingDescriptors:sortDescriptors];
_lastMessages = [sortedEventArray mutableCopy];
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