Additional information about array properties

[tisnik]

First of all, I'd like to thank you for very nice project (and especially mentioning BQN, which is very nice language IMHO).

It would be nice to expand table with language comparison with additional information about array properties.
Especially:

1. are arrays mutable or immutable in this language?
2. is it possible to change shape "in place" for mutable arrays?
3. are arrays homogenous or heterogenous - i.e. is it possible to mix element types or not?
4. for mutable heterogenous arrays - is it possible to recursively use the array itself as its element to create infinite recursion/loop in the structure? (IMHO just Julia is able to do it)

[abrudz]

Note that it may be possible to change shape "in place" for immutable arrays. For example, in APL: variable⍴⍨←new_shape.

Also:

5. are arrays multi-dimensional (like in APL, J, and BQN)? (As opposed to K and Q.)