why this fail http://www.dpaste.dzfl.pl/a6d6acf4

I want to works with ubyte -> 0000 0000
i do not want use int for manipulating these byte and consume more memory as need!

On Thursday, November 21, 2013 08:21:37 bioinfornatics wrote:
> why this fail http://www.dpaste.dzfl.pl/a6d6acf4
> 
> I want to works with ubyte -> 0000 0000
> i do not want use int for manipulating these byte and consume
> more memory as need!

All arithmetic operations on integer types (including bitwise manipulations) operate on the original type or (u)int (whichever is larger). So, if you want to manipulate a ubyte and then assign the result to a ubyte, you need to cast it. It's the same with C/C++ except that C/C++ just silently do the cast for you, whereas D requires an explicit cast for narrowing conversions.

- Jonathan M Davis

On 11/20/2013 11:21 PM, bioinfornatics wrote:
> why this fail http://www.dpaste.dzfl.pl/a6d6acf4

as with c, most of the integer operators return int for integral types smaller than int. also, this is a case where

a += b

does something different than

a = a + b

i guess the former automatically inserts a cast or something.

>
> I want to works with ubyte -> 0000 0000
> i do not want use int for manipulating these byte and consume more
> memory as need!

tough. use a cast.