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Ublas :

From: Rob McDonald (ramcdona_at_[hidden])
Date: 2008-08-20 16:26:51

I would like to be able to have a bounded_vector<double, 3> which I can
instantiate something like this...

typedef bounded_vector<double, 3> vect;
vect v = vect(0.0, 1.23, 3.45);

This requires a new constructor of the form

bounded_vector(T x, T y, T z);

Since constructors and the equals operator aren't inherited, I can't
just implement this one constructor. And, while I'm at it, I may as
well keep the code generic to type, but specific to 3 elements...

So, I've copied the code for a bounded_vector from vector.hpp. So far,
all I've really done is change the template parameter N to a 3. At this
point, I can't figure out how to implement my desired constructor...

I need to either 1) access the data directly or 2) use the available

I poked around in the source such that 'data () [i] =' looked like it
might be promising, but that doesn't seem to work. No combinations of
'this(i) =' or what not have worked either.

For 1), I haven't been able to figure out for sure where the data is
really stored and if I have access permissions to it.

For 2), I haven't been able to figure out how to access the overloaded
() operator in the constructor.

Here is one of many failed attempts:

   bounded_vector3 (T x, T y, T z):vector_type(3){
     data () [0] = x;
     data () [1] = y;
     data () [2] = z;

After I get that working, I have another similar challenge...

I would like to be able to assign one of these vectors with a comma
delimited list. This is currently done in Blitz++, and I am migrating
some code from Blitz to boost::ublas.

So, I want to be able to do this....

vect v;
v = (1.2), (3.5), (7.8); // I'm not sure if the () are significant.

Any help will be greatly appreciated,