Re: [Boost-users] [range] contiguous iterators

On Sat, Mar 16, 2013 at 10:42 AM, Stefan Strasser wrote:

Hi everyone,

is there any way to generically determine at compiletime whether an iterator or a boost range refers to contiguous memory?

i.e. &*(it+1) == (&*it)+1

some type trait like

is_contiguous::value == true is_contiguous::value == true is_contiguous::value == false

?

Hi Stefan, I needed this functionality for Boost.Compute in order to determine if a region of memory could be copied directly to the GPU or if an intermediate std::vector was required. It works just like your example except I used the name is_contiguous_iterator instead. The implementation is here: https://github.com/kylelutz/compute/blob/master/include/boost/compute/detail... Cheers, Kyle