Seems like it is, but I haven't made enough sense of the Variant code to be
sure:
import std.variant;
import std.typecons;
struct Val
{
Variant v;
Object o;
}
void set(T...)( T vals )
{
alias Tuple!(Val) Wrap;
Wrap wrap;
Variant data;
wrap.field = vals;
data = wrap;
}
void main()
{
Val val;
set( val );
}
$ dmd test
/usr/local/include/d/std/variant.d(509): Error: template
std.typecons.Tuple!(Val).Tuple.__ctor(U...) if (U.length == Types.length) does
not match any function template declaration
/usr/local/include/d/std/variant.d(509): Error: template
std.typecons.Tuple!(Val).Tuple.__ctor(U...) if (U.length == Types.length)
cannot deduce template function from argument types !()()
$
It's also weird that if I assign a value containing a variant plus more stuff
to a variant it seems to think it can hold it. In my real code
(std.concurrency) I test the value size before assigning, but the test passes
for some reason.
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