[rahulkandoriya]

The whole thing of asking "which programming language" is not the good idea. As a programmer the main fundamentals to solve the problems in any language are somewhat same. For example I was developing native android apps using java and due to clear fundamentals I was able to pick up the dart language to use flutter within weeks.

[Antoninus]

I used to develop Perl at the start of my career, now there is no market for it. In my opinion, that makes stack important.

I appreciate what you're saying about fundamentals, but its not applicable to me.

[psv1]

So you did spend a few weeks learning Flutter. What if OP's question was "Which language should I spend my next few weeks on"?