Assert that an object is within a certain oprtions.

Usage

assertChoice(
  x,
  choices,
  length = NULL,
  na = FALSE,
  null = FALSE,
  empty = TRUE,
  unique = FALSE,
  named = FALSE,
  nm = deparse1(substitute(x), backtick = TRUE),
  call = parent.frame(),
  msg = NULL
)

Arguments

x: Variable to check.
choices: Options that x is allowed to be.
length: Required length. If NULL length is not checked.
na: Whether it can contain NA values.
null: Whether it can be NULL.
empty: Whether it can be empty.
unique: Whether it has to contain unique elements.
named: Whether it has to be named.
nm: Name to use in error messages. Defaults to the expression supplied to x.
call: Call argument that will be passed to cli error message.
msg: Custom error message.