Method toStringImpl

output/java_guava/1.4.17/Collections2.java:299–308

An implementation of Collection#toString().

(final Collection<?> collection)

   */

  static String toStringImpl(final Collection<?> collection) {
    StringBuilder sb = newStringBuilderForCollection(collection.size()).append('[');
    STANDARD_JOINER.appendTo(sb, Iterables.transform(collection, new Function<Object, Object>() {
                                                                   @Override
                                                                   public Object apply(Object input) {
                                                                     return input == collection ? "(this Collection)" : input;
                                                                   }
                                                                 }));
    return sb.append(']').toString();
  }

  /**
   * Returns best-effort-sized StringBuilder based on the given collection size.