Returns TRUE if the string is a valid date. — is_valid_date_str • nprcgenekeepr

Taken from github.com/rmsharp/rmsutilityr

Usage

is_valid_date_str(
  date_str,
  format = "%d-%m-%Y %H:%M:%S",
  optional = FALSE
)

Arguments

date_str: character vector with 0 or more dates
format: character vector of length one having the date format
optional: parameter to as.Date. Logical value indicating to return NA (instead of signaling an error) if the format guessing does not succeed. Defaults to FALSE.

Value

A logical value or NA indicating whether or not the provided character vector represented a valid date string.

Examples

is_valid_date_str(c(
  "13-21-1995", "20-13-98", "5-28-1014",
  "1-21-15", "2-13-2098", "25-28-2014"
), format = "%m-%d-%y")
#> [1] FALSE FALSE  TRUE  TRUE  TRUE FALSE