problems: Retrieve parsing problems

In readr: Read Rectangular Text Data

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 = .Last.value)

stop_for_problems(x)

Arguments

x	A 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)

readr documentation built on May 29, 2024, 2:37 a.m.