I think Martin was asking why the usual exception to pre declaration
doesn't apply.
In defining a class or struct, you can normally use symbols before you
declare them.
I don't know what makes this example different.
Michael Eager wrote:
Martin Ettl wrote:
template <int N, int Low=1, int Upp=N> struct Root {
static const int ret =
Root<N,(down?Low:mean+1),(down?mean:Upp)>::ret;
^^^^ ^^^^ ^^^^ ^^^^
Neither down nor mean are defined before they are referenced.
...
Each symbol (variable or type) in C/C++ must be declared before it is
used.
