Bold UILabel text by loading it to attributedText, quitted by "*--*"

UILabel+Formattable.m

- (void)boldSubText
{
    NSString *textToAttribute = @"abcdefg*-hijklm-*nopqrst*-uvwxyz-*";

    NSDictionary *boldAttributeDict = @{NSFontAttributeName:
                                        [UIFont robotoBoldFontOfSize:MODAL_INFORMATION_FONT_SIZE_DESCRIPTION]};
    NSArray<NSString *> *splittedSubText = [textToAttribute componentsSeparatedByString:@"*"];
    NSMutableArray<NSAttributedString*> *splittedAttributedStringArray = [[NSMutableArray alloc] initWithCapacity:splittedSubText.count];

    [splittedSubText enumerateObjectsUsingBlock:^(NSString *_Nonnull splittedString, NSUInteger idx, BOOL *_Nonnull stop) {
        
        NSDictionary *toUseAttributeDict = @{};
        if (([splittedString characterAtIndex:0] == '-') &&
            (([splittedString characterAtIndex:splittedString.length] - 1) == '-'))
        {
            //need bold format
            toUseAttributeDict = boldAttributeDict;
        }
        [splittedAttributedStringArray addObject:[[NSAttributedString alloc] initWithString:splittedString attributes:boldAttributeDict]];
        
    }];

    __block NSMutableAttributedString *attributedMutableString = [[NSMutableAttributedString alloc] init];
    [splittedAttributedStringArray enumerateObjectsUsingBlock:^(id _Nonnull obj, NSUInteger idx, BOOL *_Nonnull stop) {

            [attributedMutableString appendAttributedString:obj];

    }];

    [self setText:nil];
    [self setAttributedText:attributedMutableString];

}