             try parseLongOption(characters)
         }
         try checkActiveOption()
-        try parsers.forEach { (_, parser) in
+        for (_, parser) in parsers {
             try parser.validate()
         }
     }

        }
        
        // Parse options and operands
        try fields.forEach { (name, value) in
            if value is OptionProtocol {
                let option = value as! OptionProtocol
                try checkOptionName(option.name)

        }
        
        try checkActiveOperand()
        for parser in parsers {
            try parser.validate()
        }
    }
    
