Returns TRUE if the string is a valid date.

Source: R/is_valid_date_str.R

Taken from github.com/rmsharp/rmsutilityr

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

# \donttest{
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
# }