fCraft.WorldCommands.HexToValue C# (CSharp) Method

        static byte HexToValue( char c ) {
            if( c >= '0' && c <= '9' ) {
                return (byte)(c - '0');
            } else if( c >= 'A' && c <= 'F' ) {
                return (byte)(c - 'A' + 10);
            } else if( c >= 'a' && c <= 'f' ) {
                return (byte)(c - 'a' + 10);
            } else {
                throw new FormatException();
            }
        }