What programming language should I study?

Note:

1, brackets:[mathematical] brackets;[colloquial] formulas (or expressions) in parentheses;Clojure is written in the same way as a list of elements enclosed in parentheses , separated by spaces between elements;

2, Io:io is a programming language focused on expressiveness through simplicity;

3, Level design: levels designed;

4, ai:artificial Intelligence; ai; in video games, Artificial Intelligence are used to generate intelligent Behavi ORS primarily in Non-player characters (NPCs), often simulating (analog) human-like intelligence;

5, Lua:lua is a powerful, efficient, lightweight, embeddable scripting language;

6, Actionscript:actionscript is used primarily for the development of websites and software targeting the Adobe Flash Playe R platform, used on Web pages in the form of embedded SWF files;

7, Erlang:erlang is a programming language used to build massively scalable soft real-time systems with requirements on HIG h availability;

8, compromises: compromise, compromise;

9. Haskell: An advanced, purely functional programming language.

What programming language should I study?