clangd-12 1:12~++20200715052739+d6e79e3dd6d-1~exp1build2 (amd64 binary) in ubuntu groovy

 clangd understands your C++ code and adds smart features to your editor:
  - code completion
  - compile errors
  - go-to-definition
  - and more.
 .
 clangd is a language server that implements the Language Server Protocol;
 it can work with many editors through a plugin.