Given the following example using ranges-v3:
using namespace ranges::views;
std::vector<std::vector<int>> v1 = {
{1, 2, 3, 17, 5 },
{11, 12, -1, 14, 15}
};
auto [min_val, max_val] = ranges::minmax(join(v1));
I can get the correct minmax value. But i am wondering if it is possible to use compose with values like join and minmax?
For eg. why can i not do this:
auto [min_val, max_val] = v1 | join() | ranges::minmax();
The compiler error is long and unwieldy, because i am compiling with c++17 and do not have concepts. But i was hoping to understand from the documentation here when i can and cannot use the | (compose) style.