src/main/java/edu/brown/cs/student/term/repl/Command.java


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package edu.brown.cs.student.term.repl;

/**
 * Interface implemented by all the commands that the REPL is responsible for
 */
public interface Command {
  /**
   * The function that the command calls when run from the REPL
   * @param args - the arguments for the command
   * @return a string representation of the output, or error message
   */
  String run(String[] args);
}