Re: Why D is annoying =P

[Mehrdad]

On Wednesday, 24 October 2012 at 20:37:08 UTC, H. S. Teoh wrote:

On Wed, Oct 24, 2012 at 10:16:27PM +0200, Mehrdad wrote:
[...]

struct Set(T)
{
        int[T] dict;
        hash_t toHash() const
        {
                typeof(return) r = 0;
                foreach (item; this.dict.keys)
                {
                        ???       // what should be here?
                }
                return r;
        }
}

Try this:

        hash_t toHash() const
        {
                hash_t h = 0;
                foreach (item; this.dict.keys)
                {
                        // We use a commutative operation here (+) so
                        // that the order of keys don't matter.
                        h += hashOf(&item, item.sizeof);
                }
                return h;
        }


T

Wouldn't that do a bitwise comparison?