2011/1/23 Vivek
<vivek@xmain.com>
2011/1/22 Vivek <vivek_at_[hidden]>
> Or alternatively, is there a direct way to initialize a fusion vector?
IIUC, its ctor just do the job, not?
The problem is I don't know the arity or parameter types of the function being called. I just have a source of data (which can be simplified to TYPE data = data_source<TYPE>().pop();) and arbitrary functions being passed in.
Sorry if I missed your point...here comes an idea:
Use Fusion's MPL sequences adapters, so you can have:
typedef typename
mpl::transform
<
parameter_types
, from_data_source<mpl::_1>
, mpl::back_inserter<mpl::vector<> >
>::type
data_source_provider; // a MPL sequence
And invoke as:
fs::invoke(f, data_source_provider());
where from_data_source<T> is defined as:
template<class T>
struct from_data_source
{
operator T() const
{
return data_source<T>().pop();
}
};
Maybe your data_source<T>() is some singleton for the data source?