Check Matches Regular Expression — check_grepl • checkr

Checks whether all the elements of an object match a regular expression.

Usage

check_grepl(
  x,
  pattern = ".*",
  regex = pattern,
  x_name = substitute(x),
  error = TRUE
)

check_regex(x, regex = ".*", x_name = substitute(x), error = TRUE)

Arguments

x: The object to check.
pattern: A string of the regular expression.
regex: A string of the regular expression (deprecated for pattern).
x_name: A string of the name of the object x.
error: A flag indicating whether to throw an informative error or immediately generate an informative message if the check fails.

Value

An invisible copy of x (if it doesn't throw an error).

See also

check_nchar() and check_pattern()

Examples

check_grepl("foo", "fo")
check_grepl("foo", "fo$", error = FALSE)
#> Warning: foo must match regular expression 'fo$'