listIsOfLength function

Validator listIsOfLength(
  1. int size
)

Validates that the list's length is the same as the provided size

This validator also validates that the value is a list first So there's no need to add the isTypeList validator when using this validator

Implementation

Validator listIsOfLength(int size) {
  return (value) {
    final isListResult = isType<List>().call(value);
    if (isListResult.isNotValid) return isListResult;

    return Result(
      isValid: (value as List).length == size,
      expected: 'List of size $size',
      value: value,
    );
  };
}