Re: Allocating N-dimensional Array in C++

[Søren Hauberg]

søn, 07 03 2010 kl. 21:43 +0100, skrev Jaroslav Hajek:
> On Sun, Mar 7, 2010 at 7:34 PM, Søren Hauberg <address@hidden> wrote:
> > Okay, thanks. How do you feel about having an API for creating higher
> > dimensional dim_vector's that would look something like this
> >
> >  const octave_idx_type tmp_size [] = {1, 7, 3, 2};
> >  const dim_vector size (tmp_size, sizeof (tmp_size));
> >
> > ? To me, the current approach seems a bit tedious when working with more
> > than 3 dimensions.
> >
> 
> You can do the above trick only with constant sizes anyway, so it
> doesn't seem much useful to me.

You mean the 'sizeof' trick, right?

> But the constructor could be potentially useful, so why not. It should
> be trivial, if you want to do it.

How about the attached changeset? With this, I can do

    octave_idx_type tmp_size [] = {4, 5, 6, 7};
    const dim_vector size (tmp_size, 4);
    Array<double> A (size, 0);

I was a bit confused about the use of the 'explicit' keyword in the
other constructors. I thought this keyword only made a difference for
constructors with one input argument, but I see it is used with all
constructors.

Søren

dim-vector.changeset
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