before<E> static method

Rule<DateTime, E> before<E>(
  1. DateTime date, {
  2. required E error,
})

Validates that the date is before date.

DateRules.before(deadline, error: 'Must be before deadline')

Implementation

static Rule<DateTime, E> before<E>(DateTime date, {required E error}) =>
    PredicateRule(
      predicate: (value) => value.isBefore(date),
      error: error,
    );