description

# followedBy method

Iterable<E> followedBy(

1. Iterable<E> other

)

Creates the lazy concatenation of this iterable and `other`.

The returned iterable will provide the same elements as this iterable, and, after that, the elements of `other`, in the same order as in the original iterables.

Example:

    var planets = <String>['Earth', 'Jupiter'];
    var updated = planets.followedBy(['Mars', 'Venus']);
    print(updated); // (Earth, Jupiter, Mars, Venus)

## Implementation

    Iterable<E> followedBy(Iterable<E> other) {
      var self = this; // TODO(lrn): Remove when we can promote `this`.
      if (self is EfficientLengthIterable<E>) {
        return FollowedByIterable<E>.firstEfficient(self, other);
      }
      return FollowedByIterable<E>(this, other);
    }