noNullElements static method

Iterable noNullElements(
  1. Iterable iterable, [
  2. String message = DEFAULT_NO_NULL_ELEMENTS_ARRAY_EX_MESSAGE
])

Validate that the specified argument array is neither [null] nor contains any elements that are [null]; otherwise throwing an exception with the specified message. 

Validate.noNullElements(myArray, "The validated array contains null element");

If the array is [null], then the message in the exception is "The validated object is null".

iterable the Iterable to check, validated not null by this method message the exception message if invalid, not null Returns the validated iterable (never null method for chaining) Throws ArgumentError if the iterable is null Throws ArgumentError if an element is null

Implementation

static Iterable noNullElements(Iterable iterable,
    [String message = DEFAULT_NO_NULL_ELEMENTS_ARRAY_EX_MESSAGE]) {
  DartValidate.notNull(iterable);
  for (var x in iterable) {
    if (x == null) {
      throw new ArgumentError(message);
    }
  }

  return iterable;
}