RubyMotion - Ruby for iOS(rubymotion.com)

    void animate(void (^block)(va_list), ...)
    {
        va_list args;
        va_start(args, block);
        block(args);
        va_end(args);
    }

    void (^first)(va_list) = ^(va_list args) {
        NSLog(@"%@", va_arg(args, id));
    };

    void (^second)(va_list) = ^(va_list args) {
        NSLog(@"%@", va_arg(args, id));
        NSLog(@"%@", va_arg(args, id));
    };

    animate(first, @"Hello World");
    animate(second, @"Hello", [[NSNumber alloc] initWithInt:10]);

  puts "The limits of my language define the limits of my world" if string =~ /foobar(\d*\w)/

  NSError *error = NULL;
  NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"foobar(\\d*\\w)"
  options:NSRegularExpressionCaseInsensitive error:&error];
  NSTextCheckingResult *match = [regex firstMatchInString:string
                                                options:0
                                                  range:NSMakeRange(0, [string length])];
  if (match) {
    NSLog(@"The limits of my language define the limits of my world - Wittgenstein")
  }