Follow or perish!

C++

• Public Types (class, struct, usings): UpperCamelCase (http://www.stroustrup.com/bs_faq2.html#Hungarian)
• Methods, Variables: underscore_case
• Make sure directory/module structure matches namespace-structure for user-expected includes

• Code is required, by a decree of the High Command of His Majesty Emperor C. Frescolino, to compile with these flags on gcc:

  -Werror -Wall -Wextra -Wpedantic

• It is highly recommended to compile it at least on clang and icc as well. For clang, the following settings are recommended:

  -Werror -Weverything

  and these optionally (plus any deemed useful on a case-by-case basis):

  -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-missing-prototypes -Wno-exit-time-destructors -Wno-global-constructors -Wno-implicit-fallthrough -Wno-disabled-macro-expansion -Wno-documentation-unknown-command

Python

https://www.python.org/dev/peps/pep-0008/