I want to store several structs in a vector, but the struct has a template so I get a compile error, how can I store the structs in the vector?
Example:
template<class First, class Second> struct foo
{
First f;
Second s;
};
std::vector<foo> bar; //error!
You have to fill in the template to instantiate it: std::vector< foo< int, double > > bar;
Yeah, I thought of that but I wanted to be able to use it to store any type of foo .
Is there not a way around this?
Yes certainly you can do that but you have to resolve the instance at some point. So perhaps you want it is another templated class.
template<class First, class Second>
struct foo
{
First f;
Second s;
};
template<typename A,typename B>
struct Other
{
std::vector< foo< A, B > > bar;
std::vector< foo< B, B > > barX;
};Note that you still have to have the compiler figure out the exact versions that you will need. You have only delayed the choise.
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