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Returns TRUE if the string is a valid date.

Source: R/is_valid_date_str.R
is_valid_date_str.Rd

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