Ivan Lebediev questions

• Running "manage.py compilemessages" in Dockerfile gives "django.db.utils.OperationalError: could not connect to server: No such file or directory"
• What does (s *)0 in (size_t)&(((s *)0)->m) mean [duplicate]
• Is it possible to bind() *this to class member function to make a callback to C API
• Did template concepts get to c++14?
• How not to start same task and wait until it is finished with celery beat

Ivan Lebediev answers