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Assert that an object is a list.

Usage

assertList(
  x,
  length = NULL,
  na = FALSE,
  null = FALSE,
  unique = FALSE,
  named = FALSE,
  class = NULL,
  call = parent.frame(),
  msg = NULL
)

Arguments

x

Variable to check.

length

Required length. If NULL length is not checked.

na

Whether it can contain NA values.

null

Whether it can be NULL.

unique

Whether it has to contain unique elements.

named

Whether it has to be named.

class

Class that the elements must have.

call

Call argument that will be passed to cli error message.

msg

Custom error message.