...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
The sparse insert fill policy. More...
Inherits fill_policy_wrapper< sparse_insert >.
This policy is adequate for sparse types, when fast filling is required, where indexing assign is pretty slow. It is slower than sparse_push_back fill policy, but it can be used to insert elements anywhere inside the container.