RPN and decomposing list to stack

[mcjtom]

In RPN, one can combine stacks into a list. Is it possible to decompose a list back into stack?

[Marcus von Cube]

On the Prime you can return a list but not decompose it. There is no way to return more than a single object to the stack.

[mcjtom]

Thanks. This is probably a naive question, but can't the list be decomposed sequentially somehow then, or the program can only return one object?

I don't even know how to get an element from a list by hand - SUB was the closest command I could find and it returns single-element list (how to get an element from it, I don't know).

[Helge Gabert]

You get the element by direct access (e.g., L1(1) returns the first element of L1.)

This should be explained in the manual under "Lists", but maybe it isn't.

[mcjtom]

Thanks, Helge!

How would it work with a {list} on stack - would it mean that I have to save it in a global variable first (e.g. L1) to be able to access elements, or somehow decompose the list?

Cheers!

[Helge Gabert]

No, in CAS, you can do {1,2,3,4}(3) to retrieve the 3rd element. But in Home, that doesn't work, because of implied multiplication, so there, yes, save it first and then do name().