Finding Next Available Name in Objective-C
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Useful method for finding the next available unique name in a batch of strings.
Eg: give it A list of { “Name”, “Name 1″, “Name 2″ } and it will return “Name 3″.
+(NSString*)getNextAVailableName:(NSString*)name fromNames:(NSMutableArray*)otherNames { if ([otherNames indexOfObjectPassingTest:^BOOL(id obj, NSUInteger idx, BOOL *stop) { return [[name lowercaseString] isEqualToString:(NSString*)obj]; }] == NSNotFound) { return name; } bool gotName=false; NSString *currentName = name; for(int i = 2; !gotName; ) { currentName = [NSString stringWithFormat:@"%@ %d", name , i]; if([otherNames indexOfObjectPassingTest:^BOOL(id obj, NSUInteger idx, BOOL *stop) { return [[currentName lowercaseString] isEqualToString:(NSString*)obj]; }] != NSNotFound) { i++; } else { name = currentName; gotName = true; } } return name; }
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