How to create an empty list?

Question

Here is a code (also see comments in code):

library(rlist)

lwa_res_lst <- vector(mode = "list", length = 1) # Create empty list. Unfortunatly with this method I cannot create list with 0 length.
current_res <- 1
  
lwa_res_lst <- list.append(lwa_res_lst, current_res)  # Append the element at the end of the list.

My question is: How to initially create empty list to which after can be appended an element with list.append() at position 1?

Answer 1

We can just do assignment

lwa_res_list[[1]] <- current_res

---

In the OP's code, if the list was initialized as

lwa_res_lst <- list()

Or using OP's code

lwa_res_lst <- vector(mode = "list", length = 0)

the code should work

lwa_res_lst <- list.append(lwa_res_lst, current_res) 
lwa_res_lst
#[[1]]
#[1] 1

Answer 2

current_res <- 1  #any number you want for list

lwa_res_lst <- vector(mode = "list", length = current_res)

lwa_res_lst


class(lwa_res_lst)