On Mon, 9 Apr 2001, Pearu Peterson wrote:
On Mon, 9 Apr 2001, Christian Bauer wrote:
- added examples for specialized expression output by tree-traversal and with the aid of archives
These examples are very useful for understanding GiNaC archive stuff for GiNaC beginners like me. Thanks!
However, I might have found even simpler way to extract protected attributes. Take, for example, indexed class that has protected attribute `seq'. It can be read outside of the indexed class as follows:
class wrap_indexed: public indexed { public: const exvector & get_seq(void) const { return this->seq; } };
void somefunction (const indexed & obj) { const exvector & seq = ((const wrap_indexed &)obj).get_seq(); /* Use `seq' for something */ }
<preach> Hmm, you know that you are abusing the language, don't you? As a next step step you might #define private public before #include'ing <ginac/ginac.h>. That's just scary! Better stick to the interfaces provided by the library. </preach> Regards -richy. -- Richard Kreckel <Richard.Kreckel@Uni-Mainz.DE> <http://wwwthep.physik.uni-mainz.de/~kreckel/>