Use clang-tidy

[lbartoletti]

clang-tidy is a useful tool for helping to keep a good code quality. I would suggest looking into the following option classes:

bugprone-
clang-analyzer-
cppcoreguidelines-
modernize-
openmp-
performance-
portability-
readability-

It can give warnings, but with -fix or --fix-errors it can even automatically apply some corrections.

The full list of options is here.

Notably, it also integrates well with IDEs (see here.

From a terminal,

use -DCMAKE_EXPORT_COMPILE_COMMANDS=ON when calling cmake (e.g. add it to the cmake.sh)
use -p=build when calling clang-tidy, so it will know all include directories, defines etc.

Problem
No problems, but

Improvement
There are warnings and improvements (readability, performance, etc)

Alternatives

[lbartoletti]

[X] Performance: #2356