equalsIgnoreCase<E> static method
Validates that the string equals expected (case-insensitive).
StringRules.equalsIgnoreCase('yes', error: 'Must be "yes"')
Implementation
static Rule<String, E> equalsIgnoreCase<E>(
String expected, {
required E error,
}) =>
PredicateRule(
predicate: (value) => value.toLowerCase() == expected.toLowerCase(),
error: error,
);