assertive.strings
A set of predicates and assertions for checking the properties of strings. Most of the documentation is on the assertive page. End-users will usually want to use assertive directly.
Installation
To install the stable version, type:
install.packages("assertive.strings")
To install the development version, you first need the devtools package.
install.packages("devtools")
Then you can install the assertive.strings package using
library(devtools)
install_bitbucket("richierocks/assertive.strings")
Predicates
is_empty_character
, is_non_empty_character
, is_missing_or_empty_character
, and is_non_missing_nor_empty_character
check for empty and missing (or not) character vectors.
is_an_empty_string
, is_a_non_empty_string
, is_a_missing_or_empty_string
, and is_a_non_missing_nor_empty_string
do the same, for single strings.
is_numeric_string
checks for strings that contain numbers.
is_single_character
checks for single characters.
is_matching_fixed
, is_matching_regex
, is_not_matching_fixed
, and is_not_matching_regex
all check whether a string matches a pattern or not.
Assertions
Predicates that return a vector have two corresponding assertions. For example,
is_numeric_string
has assert_all_are_numeric_strings
and assert_any_are_numeric_strings
.
Predicates returning a single logical value have one corresponding assertion.
For example, is_an_empty_string
has assert_is_an_empty_string
.
Utils
character_to_list_of_integer_vectors
converts a character vector of numbers to a list of integer vectors.