Re: [GiNaC-list] list input

1 Mar 2015


      On 03/01/2015 12:25 PM, soppon wrote:
...
#include <iostream>
#include <ginac/ginac.h>
using namespace std;
using namespace GiNaC;
int main()
{
    symbol xs("x");
    lst expr;
    parser reader;
    expr=reader("{x,x}");
    cout <<"list " << expr  << endl;
    cout <<"number of elements "<< expr.nops() << endl;
    cout <<"1st el " <<expr[0] << endl;
    cout <<"2nd el, error " <<expr[1]<< endl;
    return 0;
}
Your list expr has only one element, which is itself a list with two
elements.

best wishes
   -richy.
-- 
Richard B. Kreckel
<http://in.terlu.de/~kreckel/>