Are spaces optional? That is, we can just type x+1 instead of x + 1. Also, can I declare an array [1,2,3] instead of [1, 2, 3]?

Question

Wow, I almost exceeded the word limit.
Anyway, give me an answer.

Answer 1

Depends on conventions, but generally they are optional. For example, Python accepts all, but the convention is to make spaces between variables, assignments and values (x = 6) with an exception of method named parameters do_magic(x=True)

But all will work whether you write spaces or not. A question of readability only.