any_obj                 Validator: Allow any object
atm_vec                 Validator: Check if element is atomic
chr_vec                 Validator: Check if element is a character
data_validator          Convert a dataclass to a data frame validator
dataclass               Construct a dataclass in R
df_like                 Validator: Check if element is a data like
                        object
dte_vec                 Validator: Check if element is a date
lgl_vec                 Validator: Check if element is a logical
num_vec                 Validator: Check if element is a number
