R: Retrieve parsing problems

problems {readr} | R Documentation

## Retrieve parsing problems

### Description

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.

### Usage

    problems(x)

    stop_for_problems(x)

### Arguments

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

### Value

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

`row,col` | Row and column of problem
`expected` | What readr expected to find
`actual` | What it actually got

### Examples

    x <- parse_integer(c("1X", "blah", "3"))
    problems(x)

    y <- parse_integer(c("1", "2", "3"))
    problems(y)

[Package readr version 1.4.0 Index]