Readr functions will only throw an error if parsing fails in an unrecoverable way. However, there are lots of potential problems that you might want to know about - these are stored in the problems attribute of the output, which you can easily access with this function. stop_for_problems() will throw an error if there are any parsing problems: this is useful for automated scripts where you want to throw an error as soon as you encounter a problem.




An data frame (from read_*()) or a vector (from parse_*()).


A data frame with one row for each problem and four columns:


x <- parse_integer(c("1X", "blah", "3"))
#> Warning: 2 parsing failures. #> row col expected actual #> 1 -- no trailing characters X #> 2 -- an integer blah
#> # A tibble: 2 × 4 #> row col expected actual #> <int> <int> <chr> <chr> #> 1 1 NA no trailing characters X #> 2 2 NA an integer blah
y <- parse_integer(c("1", "2", "3")) problems(y)
#> # A tibble: 0 × 4 #> # ... with 4 variables: row <int>, col <int>, expected <chr>, actual <chr>