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Virtual environment managment for Weka.

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/*
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see .
 */

/*
 * IteratingScriptCommand.java
 * Copyright (C) 2018 University of Waikato, Hamilton, NZ
 */

package com.github.fracpete.wekavirtualenv.command.script;

/**
 * Interface for script commands that iterate a block of instructions2.
 *
 * @author FracPete (fracpete at waikato dot ac dot nz)
 */
public interface IteratingScriptCommand
  extends ScriptCommand {

  /**
   * For querying whether the command can still iterate.
   *
   * @return		true if to iterate, false if finished
   */
  public boolean canIterate();

  /**
   * Performs the next iteration.
   *
   * @return		true if successfully executed
   */
  public boolean iterate();
}