I went through some of the career requiring in some companies like, Google, Facebook, DigitalOcean and etc. The prominent thing that I've found is that C++ is a must. What I would like to know is what are expecting us by leaning C++ ? Is there any specific aspects of C++ that they want us to know ? And why is C++ is this much popular ? I'm more familiar with NodeJs, Django and PHP is moving to learn C++ seems to be a good move with syntax ?