On Tuesday, 23 June 2015 at 13:52:19 UTC, Daniel N wrote:
On Tuesday, 23 June 2015 at 11:03:10 UTC, Jonathan M Davis
wrote:
Which does not generally work in D. It can in some cases, but
const is so restrictive in D that you simply cannot use it
just because you don't intend to mutate a variable. Too many
types won't work with const, and many types _can't_ work with
const. const has its uses, but you have to be careful with it,
and in the general case, that means that you can't put it on
function parameters just to indicate that the function
argument is not going to mutated.
- Jonathan M Davis
Thus the solution cannot require const.
auto is worse because, if you later decide you need to add a
template parameter then the meaning is changed and you get a
_hidden_ performance issue.
And how does it introduce a hidden performance issue. You'd end
up with some template bloat, but that's it, and that's just going
to increase the memory footprint of your program slightly, which
isn't generally going to be a performance issue. It's just going
to make your program slightly larger.
- Jonathan M Davis
