Check date format — is_date_proper • amadeus

Check date input strings conform to the required format.

Usage

is_date_proper(instr = NULL, format = "%Y-%m-%d")

Arguments

instr: character(1). String to check.
format: character(1). Matching format to be checked. Default is "%Y-%m-%d", which can detect "%Y/%m/%d. See strftime for details of formatting this string.

Value

No returning value. It stops the function if instr doesn't conform to the format.

Author

Insang Song