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A set of predicates and assertions for checking the properties of US-specific complex data types. Most of the documentation is on the assertive page. End-users will usually want to use assertive directly.


To install the stable version, type:


To install the development version, you first need the devtools package.


Then you can install the package using



is_us_telephone_number checks character vectors for UK telephone numbers.

is_uk_zipcode checks character vectors for UK zip codes.


Predicates all return a vector and have two corresponding assertions. For example, is_us_telephone_number has assert_all_are_us_telephone_numbers and assert_any_are_us_telephone_numbers.

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