There are only 5 languages. JavaScript, C++, Java, Python, C#
This is basically the same set of languages people were writing 20 years ago and will probably be the same set of languages people will write in 20 years from now.
It really depends on your domain. I haven't seen C# a lot, nor python, in some orgs.
For some (like me), it's more a superset of C, assembly, bash, maybe lisp, python and matlab.
For others, it's going to be JavaScript, PHP, CSS, HTML..
I agree though that a library is usually domain-specific, and that you can probably easily identify the subset of languages that you really need official bindings for (thereby making my comment a bit useless, sorry for the noise).
For some (like me), it's more a superset of C, assembly, bash, maybe lisp, python and matlab.
For others, it's going to be JavaScript, PHP, CSS, HTML..
I agree though that a library is usually domain-specific, and that you can probably easily identify the subset of languages that you really need official bindings for (thereby making my comment a bit useless, sorry for the noise).