lengthEq static method

String? lengthEq(
  1. String? checkValue,
  2. int eq, {
  3. String? errorMessage,
})

Checks that the length of checkValue is equal to eq

If checkValue is not null and checkValue.length is not equal to ltEq than errorMessage is returned if provided, else the default is provided. Otherwise null is returned

Implementation

static String? lengthEq(String? checkValue, int eq, {String? errorMessage}) {
  if (checkValue != null && !(checkValue.length == eq)) {
    return errorMessage ?? "Field length not equal too $eq";
  }
  return null;
}