Accessing same named list elements of the list of lists in R

Question

Frequently I encounter situations where I need to create a lot of similar models for different variables. Usually I dump them into the list. Here is the example of dummy cod

Answer 1

I usually use kohske way, but here is another trick:

 sapply(modlist, with, rank)

It is more useful when you need more elements, e.g.:

 sapply(modlist, with, c(rank, df.residual))

As I remember I stole it from hadley (from plyr documentation I think).

Main difference between [[ and with solutions is in case missing elements. [[ returns NULL when element is missing. with throw an error unless there exist an object in global workspace having same name as searched element. So e.g.:

dah <- 1
lapply(modlist, with, dah)

returns list of ones when modlist don't have any dah element.