Re: implicit ubyte casting

[Don]

Brad Roberts wrote:

On Thu, 1 Oct 2009, Saaa wrote:

I think is very bug-prone, isn't it obvious iub should be -5?

ubyte ub = 5;
int iub = -ub; // iub now is 251

What is the reasoning to do it this way?

The inclusion of the 'int' part obscures what I think the real problem is..

   Does it make sense to use uniary-minus on a unsigned type?

My answer.. no.

I agree. But you don't actually need unary minus to see the problem:

import std.stdio;

void main()
{
  uint a = 0;
  uint b = 5;
  long ib =  a - b;
  writefln("%s", ib); // prints: 4294967291
}