Method ddo

basex-core/src/main/java/org/basex/query/expr/Expr.java:379–381

Indicates if this expression returns items in document order without duplicates. @return result of check

()

   * @return result of check
   */
  public boolean ddo() {
    return seqType().zeroOrOne();
  }

  /**
   * Returns the arguments/operands of an expression (function, list, etc.).