On Monday, 21 October 2013 at 16:51:02 UTC, simendsjo wrote:
On Monday, 21 October 2013 at 15:00:26 UTC, Dicebot wrote:
On Monday, 21 October 2013 at 12:58:55 UTC, John Colvin wrote:
I suspect I'm being very dumb here, but I can't get my head
around this:
template B(alias A)
{
alias B = A;
}
template C(A ...)
{
alias C = A[0];
}
static assert(B!1 == 1); //fine
static assert(C!1 == 1); //Error: cannot alias an
expression 1
I think this is a good match for a gold collection of "awkward
mismatch of template alias vs normal alias". I am quite
surprised former template work actually, aliases are not
supposed to handle expressions at all. But magic of template
alias parameter turns expression into symbol and here we go.
I didn't know the B template would work... Is this correct
semantics according to the spec?
I've used quite some T(A...), so I was used to literals not being
aliasable.
A bit strange that literals "is symbols" (or how I should phrase
it) when using T(alias A), but not T(A...).
