I think it would be very helpful to allow -1 to select the last array element.
It should only be used by select and #, not param (to not break backward compatibility):
_arr = [1,2,3]; _arr#-1 // return 3
Alternatively, maybe using negative numbers should be just modded in general? (using: count-(-index % count), where count > 0 and index < 0)
e.g.:
_arr = [0, 1, 2, 3, 4]; _arr#-1; //4 _arr#-2; //3 _arr#-103 //2
Any particular reason why? I mean # is used more often than select nowadays...
And I can't think of any limitations either 🤔
I don't know, but as far as I see there is no good reason. You could just as easily have all the select overloads, such as _string # [1,2]. Same way you could have _string + [1,2] (I know, it's not a valid syntax)
And - is a unary command, so _arr#-_index is not gonna be confusing either.