On Wed, 15 May 2013 03:31:40 +0200, Diggory <digg...@googlemail.com> wrote:
I have a vector struct, Vector(T, uint N) templated on the type T and
number of components, N. I'm trying to write a function "cross" which
will calculate the cross product of a number of vectors.
For a given number of components, N, the cross function should take N-1
arguments, each one a Vector!(?, N) and will return a vector
perpendicular to the vectors passed in. The ? means the type is free to
be anything.
The problem is that however I try to write it, the template argument
deduction isn't powerful enough to work out which instantiation to use.
I thought something like this would work to deduce the parameters and
then I could use constraints to enforce the other rules, but no:
auto cross(T, N, U...)(Vector!(T, N) a, U b) { return 0; }
auto cross(T, uint N, U...)(Vector!(T,N) a, U b) { return 0; }
Oughta work.
--
Simen
