Re: [boost] Interest in a container which can hold multiple data types?

6 May 2015


      On 5/6/2015 2:24 PM, Alex Perry wrote:
...
On  05 May 2015 23:24 Boris Rasin [mailto:boris@pointx.org] wrote:
...
On 5/6/2015 1:08 AM, James Armstrong wrote:
...
Do you mean something that would work along the lines of...
Snip...
...
//iterate through doubles
for (auto itr = itr_begin<double>(my_vec); itr !=
itr_end<double>(my_vec);
++itr)
{
      // ...
}
Snip
Yes. And this would work with std::vectorboost::any and
std::listboost::variant alike.
How would this differ from using boost.range filters?
eg
#include 
for (auto & val : boost::adaptors::filter(my_vec, []( boost::any & i) { return !i.empty() && i.type() == typeid(int); } ) )
{
}
It wouldn't. Just a bit cleaner syntax, something like this:

for (auto& val : type_filter<int>(my_vec))
{
}