How to get Length of List in R?

R – List Length

To get length of list in R programming, call length() function and pass the list as argument to length function.

The syntax to call length function with list myList as argument is

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length(myList)

The length function returns an integer representing the number of items in the list.

In the following program, we will create a list containing some string values and find its length programmatically using length() function.

example.R

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myList <- list("Sunday", "Monday", "Tuesday", "Wednesday")
listLength = length(myList)
cat("List length is :", listLength)

Output

List length is  4

Now, let us create an empty list and verify if the list’s length is zero or not.

example.R

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myList <- list()
listLength = length(myList)
cat("List length is :", listLength)

Output

List length is : 0

In this R Tutorial, we learned how to find the length of a list in R programming using length() function, with the help of examples.