CORBA Programming with TAO-3

      // Truncate to three elements

      myseq.length(3); // Deallocates "fourth"

      // Grow to five elements (add two empty strings)

      myseq.length(5);

      // Initialize appended elements

      myseq[3] = CORBA::string_dup("4th");

      myseq[4] = CORBA::string_dup("5th");

      // Print contents once more

      for (CORBA::ULong k = 0; k < myseq.length(); k++)

            cout << "myseq[" << k << "] = \"" << myseq[k].in() << "\"" << endl;

      return 0;

}

·        union
idl中的union类型与C++中的union不是等价的，它实际上被映射成了对应的class，同时在使用上与C++中的union也有极大区别。以下面的idl为例：

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