Re: [GiNaC-list] write access to entries of submatrices [Was: multi index storage of expressions]

--- Charlls Quarra <charlls_quarra@yahoo.com.ar> escribió:

I just noted that the following write access attempt will fail:

matrix foo(1 , 2); for (int i=0 ; i< 2 ; i++) { foo(0,i) = matrix(2,2); } ex_to<matrix>( foo(0,1) )(1,1) = 34; cout << "it was wrote -> " << ex_to<matrix>( foo( 0 , 1 ) )(1,1) << endl;

ok i found that this awfully-looking hack does the job: ( *(matrix*) & ex_to<matrix>(foo(0,1)) )(1,1) = 34; im eager to find out what its the ginac-sanctioned way to do it though __________________________________________________ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas