Conditional type definitions
- by pythonic metaphor
I'm sure that boost has some functions for doing this, but I don't know the relevant libraries well enough. I have a template class, which is pretty basic, except for one twist where I need to define a conditional type. Here is the psuedo code for what I want
struct PlaceHolder {};
template <typename T>
class C{
typedef (T == PlaceHolder ? void : T) usefulType;
};
How do I write that type conditional?