R define nested empty list

rec.list <- function(len){
    if(length(len) == 1){
        vector("list", len)
    } else {
        lapply(1:len[1], function(...) rec.list(len[-1]))
    }
}
depth = c(1, # only one object
          2  # two objects
         )
my.list <- rec.list()

# The obtained structure is: 
## [[1]]
## [[1]][[1]]
## [[1]][[2]]

my.list<-lapply(my.list<-vector(mode = 'list',5),function(x) # 1st level with 5 objects
      x<-lapply(x<-vector(mode = 'list',3),function(x)       # 2nd level with 3 nested objects
      x<-vector(mode='list',2)))                             # 3rd level with 2 nested objects

Source: stackoverflow.com

Similar codes

0 vote124 views1 answer
Convert all numeric columns to percentages R
R
1 vote107 views1 answer
"R" concatinate rows
R
1 vote100 views1 answer
R change a single value in a dataframe
R
-1 vote115 views2 answers
Export csv file in r
R
0 vote117 views1 answer
Extract rse from lm in r
R
1 vote110 views1 answer
Need R code
R
0 vote106 views1 answer
What is factor in r programming
R
0 vote121 views2 answers
Remove column from matrix r
R
3 votes151 views4 answers
How to read csv file in r
R
0 vote121 views2 answers
Modulo in r
R