Replace virtual keyword by override virtual can be ambiguous. Applied changes correspond to clang-tidy fixes stemming from the modernize-use-override check. Change-Id: I973afd4680a5df587419777504aeb94467196b89
Ceres Solver is an open source C++ library for modeling and solving large, complicated optimization problems. It is a feature rich, mature and performant library which has been used in production at Google since 2010. Ceres Solver can solve two kinds of problems.
Please see ceres-solver.org for more information.