I used Linux/Apache/PHP/MySQL over 16 years and while changed 5 jobs. I am still learning new programming languages(swift) or some programming languages I have

I used Linux/Apache/PHP/MySQL over 16 years and while changed 5 jobs. I am still learning new programming languages(swift) or some programming languages I have not learnt yet like embedded C. that is true if you can master one programming language then you can easier to pickup difference programming languages. Thanks for C language and Pascal that basic concept i learnt from high school.