I’ve been doing some very introductory tutorials for #Lua. It seems pretty interesting. I don’t think it will displace #Tcl and #Python as my favorite scripting languages, but it could become the third in the set.
Seeing that tables (which are dictionaries—associative arrays—that can also act as regular arrays if numeric keys are used) are the only data structure, it sort of twists my mind into contortions trying to imagine how to structure certain kinds of data. That’s good, IMO, because history (took classes decades ago on BASIC, COBOL, Pascal, C, C++, Java, ...) predisposes me to look for arrays and records (or objects that encapsulate records) as the building blocks.
I’ve also downloaded (but not yet installed) #Erlang and #Elixir for Windows.