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Fixed typo in Conditions.Rmd #1814

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Fixed typo in Conditions.Rmd #1814

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2 changes: 1 addition & 1 deletion Conditions.Rmd
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Expand Up @@ -713,7 +713,7 @@ This is an improvement for interactive usage as the error messages are more like
### Signalling
\index{conditions!signalling}

Let's build some infrastructure to improve this situation, We'll start by providing a custom `abort()` function for bad arguments. This is a little over-generalised for the example at hand, but it reflects common patterns that I've seen across other functions. The pattern is fairly simple. We create a nice error message for the user, using `glue::glue()`, and store metadata in the condition call for the developer.
Let's build some infrastructure to improve this situation. We'll start by providing a custom `abort()` function for bad arguments. This is a little over-generalised for the example at hand, but it reflects common patterns that I've seen across other functions. The pattern is fairly simple. We create a nice error message for the user, using `glue::glue()`, and store metadata in the condition call for the developer.

```{r}
abort_bad_argument <- function(arg, must, not = NULL) {
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