dte_vec {dataclass}

Validator: Check if element is a date

Description

This function is used to check whether something is a date. You can use this function to check the length of a date vector. You can also specify the level of a violation. If level is set to "warn" then invalid inputs will warn you. However, if level is set to "error" then invalid inputs will abort.

Usage

dte_vec(
  max_len = Inf,
  min_len = 1,
  level = "error",
  allow_na = FALSE,
  allow_dups = TRUE
)

Arguments

max_len

The maximum length of a date element

min_len

The minimum length of a date element

level

Setting "warn" throws a warning, setting "error" halts

allow_na

Should NA values be allowed?

allow_dups

Should duplicates be allowed?

Value

A function with the following properties:

* Checks whether something is a date * Determines whether the check will throw warning or error * Optionally checks for element length

Examples

# Define a dataclass for testing dates:
my_dataclass <-
  dataclass(
    num_val = num_vec(),
    # Setting warn means a warning will occur if violation is found
    # The default is "error" which is stricter and will halt upon violation
    dte_val = dte_vec(level = "warn")
  )

# While `num_val` must be a number, `dte_val` must be a date!
my_dataclass(
  num_val = c(1, 2, 3),
  dte_val = Sys.Date()
)

my_dataclass(
  num_val = c(1, 2, 3),
  dte_val = as.Date("2022-01-01")
)

my_dataclass(
  num_val = c(1, 2, 3),
  dte_val = as.Date(c("2022-01-01", "2023-01-01"))
)