Count values separated by a comma in a character string

Question

I have this example data

d<-\"30,3\"
class(d)

I have this character objects in one column in my work data frame and I need to be able to

Answer 1

A slight variation on the accepted answer, requires no packages. Using the example d <- c("1,2,3", "5,2")

lengths(strsplit(d, ","))

> [1] 3 2

Or as a data.frame

df <- data.frame(d = d)

df$counts <- lengths(strsplit(df$d, ","))

df

#----
    d counts
1,2,3      3
  5,2      2