Method toString

core/src/main/java/org/apache/calcite/util/Util.java:1496–1508

Converts an iterable to a string.

(
      Iterable<T> iterable, String start, String sep, String end)

   * Converts an iterable to a string.
   */
  public static <T> String toString(
      Iterable<T> iterable, String start, String sep, String end) {
    final StringBuilder buf = new StringBuilder();
    buf.append(start);
    for (Ord<T> ord : Ord.zip(iterable)) {
      if (ord.i > 0) {
        buf.append(sep);
      }
      buf.append(ord.e);
    }
    buf.append(end);
    return buf.toString();
  }

  /** Converts a list of strings to a string separated by newlines. */
  public static String lines(Iterable<String> strings) {