How to add new column in R during for loop?

Question

I wanted to find the age in the database, I used this answer to solve the problem Get the difference between dates in terms of weeks, months, quarters, and years?

This code I used to find years

age <- function(dob, age.day = today(), units = "years", floor = TRUE) {
  calc.age = interval(dob, age.day) / duration(num = 1, units = units)
  if (floor) return(as.integer(floor(calc.age)))
  return(calc.age)
}

But when I am performing loop using for loop and trying to save value in new column in database customer, I am not able to do so.

for (i in customer$dateofbirth) {
  as.Date(i)
  customer$age <- age(i)
}

The result I am getting is same value in age column. Where I am going wrong?

Answer 1

If you want to use for loop, maybe this is helpful

for (i in customer$dateofbirth) 
 customer$age[i] <- age(as.Date(i))

@RHertel thanks for the comment age(as.Date(i))