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rlang 1.1.4

Reference
Tidy evaluation

Overviews
What is data-masking and why do I need `{{`? Data mask programming patterns

Guides
The data mask ambiguity The double evaluation problem

Notes
What happens if I use injection operators out of context? Does `{{` work on regular objects?
Metaprogramming

Overviews
Defusing R expressions Injecting with `!!`, `!!!`, and glue syntax Metaprogramming patterns What are quosures and when are they needed?

Guides
Taking multiple columns without `...`

Notes
Why are strings and other constants enquosed in the empty environment?
Conditions

Guides
Including function calls in error messages Including contextual information with error chains Formatting messages with cli

Notes
Customising condition messages

News

Release notes
Version 0.4.3 Version 0.4.0 Version 0.3.1 Version 0.3.0 Version 0.2.0
Changelog

Is object a condition?

Source: R/cnd.R

is_condition.Rd

Is object a condition?

Usage

is_condition(x)

is_error(x)

is_warning(x)

is_message(x)

Arguments

x: An object to test.

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