Method opt

basex-core/src/main/java/org/basex/query/expr/Set.java:62–62

Performs function specific optimizations. @param cc compilation context @return optimized expression or null @throws QueryException query exception

(CompileContext cc)

   * @throws QueryException query exception
   */
  abstract Expr opt(CompileContext cc) throws QueryException;

  @Override
  public final Iter iter(final QueryContext qc) throws QueryException {