The main list can be dynamically created (i.e., the number of sublists may vary) so I cannot use all.equal or simply compare the lengths.

In this attached photo for example, you can see that I have three sublists. How can I check if they have the same number of characters or list length(which in this case they do not)?

CodePudding user response：

One way is to use lengths and check if the number of distinct elements are equal to 1 or not

dplyr::n_distinct(lengths(main_list)) == 1

n_distinct will be just length(unique( in base R

length(unique(lengths(main_list))) == 1