https://forum.dlang.org/post/mailman.1072.1581112984.31109.digitalmars-d-le...@puremagic.com
On Friday, 7 February 2020 at 22:03:00 UTC, H. S. Teoh wrote:
On Fri, Feb 07, 2020 at 07:37:08PM +0000, mark via
Digitalmars-d-learn wrote:
[...]
bool[E] works just fine.
The bool does take up 1 byte, though, so if you're *really*
want to optimize that away, you could do this:
alias Unit = void[0];
enum unit = Unit.init;
// Look, ma! A bona fide set!
Unit[E] mySet;
mySet[...] = unit;
mySet.remove(...);
... // etc.
Or you can wrap void[0][E] in a nice user-defined type that
gives nice set-like syntax. But IMO, this is all overkill, and
adds needless complexity. Just use bool[E] or
std.container.rbtree. :-D
T
Can you please explain what does `bool[E]` mean? And how does the
code with aliasing void[0] and then using enum even work?
