How do I count the number of files read into this list?

问题

I have a bunch of csv files that I am reading into a list like this:

f <- list.files(pattern="201\\d{5}\\.csv")

Is there any way to count how many files that I am reading in?

回答1:

Yes, length(f) will give you the number of file names in f.

来源：https://stackoverflow.com/questions/18175979/how-do-i-count-the-number-of-files-read-into-this-list