Stephen Gross wrote:
I've put together a class called 'AnyVector' for doing type-based iteration on a vector. The basic idea is that AnyVector wraps a std::vector<boost::any>. The AnyVector lets you iterate across a subset of the underlying vector by using filter_iterators. The filter iterators, in turn, dereference to the requested type for ease of use. For instance, you can do the following:
I've done something similar to this in the past, but found it notoriously slow to filter on types with boost::any - (on top of this I also added the capability to cast into another type, and throw if it was not possible). Not to disuade you, however, I would really be interested to know if you've profiled your code for a mix of types (say 10 or more atomic types). -Again, my experience with this sort of thing meant runtimes suffered.
<snip .. example code>
Cheers, -- Manfred Doudar MetOcean Engineers www.metoceanengineers.com