On Tuesday, 11 December 2012 at 13:24:59 UTC, d coder wrote:
No, it's a fix of a gotcha from C. The C code would just allow
the
assignment.
Yes Andrei.
But it does not look clean if you have to write:
byte a, b, c;
a = cast(byte) (b + c);
Well I know the advantages (safety). But imagine having to
write all that
when working with bytes and shorts. Makes it really difficult
to work with
shorts and bytes in D. Would I be asking for too much if I ask
DMD to
provide a compiler flag that makes it return bytes and shorts
for
operations on them? So the deal would be, if you use this
compiler flag,
code behavior would be different from that of C/C++.
What we get would be more practical short and byte behavior.
Regards
- Puneet
If the compiler can statically verify that some integer value
fits in a byte or short, you don't need the cast. So to rewrite
your example:
byte a, b, c;
a = (b + c) & 0xFF;
Also:
short a;
byte b, c;
a = b + c;
Still not exactly what you're looking for, but the mask looks
nicer than a cast IMO. It's also safer.
