description

# first property Null safety

E first
inherited

Returns the first element.

Throws a StateError if `this` is empty. Otherwise returns the first element in the iteration order, equivalent to `this.elementAt(0)`.

## Implementation

    E get first {
      Iterator<E> it = iterator;
      if (!it.moveNext()) {
        throw IterableElementError.noElement();
      }
      return it.current;
    }

void first= (E value)

Updates the first position of the list to contain `value`.

Equivalent to `theList[0] = value;`.

The list must be non-empty.

## Implementation

    void set first(E value);