On Monday, 7 July 2014 at 21:49:22 UTC, Justin Whear wrote:
On Mon, 07 Jul 2014 21:34:05 +0000, Nordlöw wrote:
However using this function through UFCS
auto cx = new C().set!"x"(11);
fails as
algorithm_ex.d(1257,17): Error: template algorithm_ex.set
cannot deduce
function from argument types !("x")(C, int), candidates are:
algorithm_ex.d(1242,7): algorithm_ex.set(string member,
T,
U)(ref T a, in U value) if (isAggregateType!T && hasMember!(T,
member))
Instead I have to use
auto c = new C(); set!"x"(c, 11);
which is not as elegant.
Why doesn't UCFS work here and is there a solution using DMD
git master?
You need to use `auto ref` to have this work with both classes
and
structs. A working version of your code here: auto dx =
D().set!"x"(11);
assert(dx.x == 11);
To elaborate:
`new C()` is an r-value, and references can only be taken from
l-values.
