On 10/26/2013 05:42 PM, Andrei Alexandrescu wrote:
While messing with std.allocator I explored the type below. I ended up
not using it, but was surprised that implementing it was quite
nontrivial. Should we add it to stdlib?
Theory: http://en.wikipedia.org/wiki/Three-state_logic
"The term tri-state[1] should not be confused with ternary logic
(3-value logic)."
...
Tristate opBinary(string s)(Tristate rhs) if (s == "&")
{
// & yields 0, 1, 4
return make(value & rhs.value);
}
This does not seem right. yes&unknown should be unknown.
