Thanks for the help, now it is running nicely!
On Monday, 28 October 2019 15:05:19 UTC+1, Bruno Turcksin wrote:
>
> There is a small bug in the lambda:
>
> Le lun. 28 oct. 2019 à 09:36, Juan Carlos Araujo Cabarcas
> <ju4...@gmail.com <javascript:>> a écrit :
> > auto my_lambda = [&polar](Vector<double> a, Vector<double>b) {
> > return polar.objective_fun(a,b);
> > }; //polar.Callback (a,b);};
>
> You want the vector to be passed by reference not by value, otherwise
> the result cannot be updated. So it should be:
> auto my_lambda = [&polar](const Vector<double> &a, Vector<double> &b) {
> return polar.objective_fun(a,b);
> };
>
> Bruno
>
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