Parameter Descriptions for chk Functions
The object to check.
A string of the name of object x or NULL.
A flag specifying whether to check the other parameters.
A chk_ function.
A non-negative numeric scalar.
A character vector of the permitted file extensions (without the .).
An object to check against.
A non-missing scalar of a value.
A non-missing sorted vector of length 2 of the lower and upper permitted values.
A string of a regular expression.
A vector of the permitted values.
A string specifying the class.
A count of the number of formal arguments.
A vector of values that cannot be compared. FALSE means that all values can be compared.
Additional arguments.