Whether you’re looking to change the direction of your career or expand your skillset as a programmer, the languages you chose to learn will significantly impact your time commitment and prospects.

Python stays far ahead after another dip; C holds second, Java retakes third from C++, and R rises to eighth as SQL slips, ...

Language difficulty is not a fixed measurement. It depends heavily on your native language, your exposure to other languages, and the specific aspects of the target language you’re trying to learn.