Warning message for "One or more parsing issues" contains difficult to follow instruction dat <- vroom(...)

[charliejhadley]

There's been some awesome work on the on the warning messages for {readr}! However, I feel for inexperienced users the instructions are confusing.

The following error message is generated if vroom detects unexpected input:

Warning message:
One or more parsing issues, call `problems()` on your data frame for details, e.g.:
  dat <- vroom(...)
  problems(dat) 

For a {tidyverse} user who only has the core tidyverse loaded they're not going to be able to run dat <- vroom(...) as they don't have {vroom} loaded.

However, I note that the error comes from vroom_errors.h in the {vroom} package... so it might not be convenient to figure out if the user has {vroom} loaded or not at the point when the error is generated.

https://github.com/tidyverse/vroom/blob/a7769d1f9216216cfd8fdc96fbde9360fe59b598/src/vroom_errors.h#L94

I think it is worth questioning if this is a useful instruction for inexperienced users even if it is decided this is the best error that can be generated.

[hadley]

Can you please provide a minimal reprex (reproducible example)? The goal of a reprex is to make it as easy as possible for me to recreate your problem so that I can fix it: please help me help you! If you've never heard of a reprex before, start by reading about the reprex package, including the advice further down the page. Please make sure your reprex is created with the reprex package as it gives nicely formatted output and avoids a number of common pitfalls.

[hadley]

Duplicate of #1477