On Sunday, 21 October 2012 at 03:40:15 UTC, Andrej Mitrovic wrote:
On 10/21/12, Tyler Jameson Little <beatgam...@gmail.com> wrote:
Say I have something like this:
class A {
class B {
}
B b;
}
I can't find a way to figure out if the inner type is static or
not.
If it's static you don't need the outer class to instantiate it.
Figuring out if it's nested or not is doable:
class A
{
class B { }
B b;
}
template GetType(T)
{
alias T GetType;
}
template GetParentType(alias T)
{
alias GetType!(__traits(parent, T)) GetParentType;
}
template isInnerClass(T)
{
enum bool isInnerClass = is(GetParentType!T == class);
}
void main()
{
A.B ab;
static assert(isInnerClass!(typeof(ab)));
}
(P.S. to others, why is __traits so impossible to work with?
typeof
can't be used to extract the type, I had to write a special
template
just to extract the type of a symbol..)
Hmm, maybe something like this should go into std.traits? This
seems more readable than my hacky solution (__traits(compiles,
A.B)).
