How to easy set size of multi dimentional dynamic array?

for example:
class Foo{
  private double[][] m_array;

  this(uint o_length, uint o_width){
    // hard way:
    this.m_data.length = o_length;
    for(uint i = 0; i < this.m_array.length; i++){
      this.m_array[i] = new double[o_width];
    }
  }
}

On Wed, 03 Sep 2008 13:45:12 +0400, Zarathustra <adam.chrapkowski@gmail.com> wrote:

> How to easy set size of multi dimentional dynamic array?
>
> for example:
> class Foo{
>   private double[][] m_array;
>
>   this(uint o_length, uint o_width){
>     // hard way:
>     this.m_data.length = o_length;
>     for(uint i = 0; i < this.m_array.length; i++){
>       this.m_array[i] = new double[o_width];
>     }
>   }
> }


Try this:

this(uint o_length, uint o_width){
  m_array = new double[][](o_length, o_width);
}

Denis Koroskin Wrote:

> On Wed, 03 Sep 2008 13:45:12 +0400, Zarathustra <adam.chrapkowski@gmail.com> wrote:
> 
> > How to easy set size of multi dimentional dynamic array?
> >
> > for example:
> > class Foo{
> >   private double[][] m_array;
> >
> >   this(uint o_length, uint o_width){
> >     // hard way:
> >     this.m_data.length = o_length;
> >     for(uint i = 0; i < this.m_array.length; i++){
> >       this.m_array[i] = new double[o_width];
> >     }
> >   }
> > }
> 
> 
> Try this:
> 
> this(uint o_length, uint o_width){
>    m_array = new double[][](o_length, o_width);
> }

Great, ;)
Thanks Denis

On 2008-09-03 13:28:47 +0200, Zarathustra <adam.chrapkowski@gmail.com> said:

> Denis Koroskin Wrote:
> 
>> On Wed, 03 Sep 2008 13:45:12 +0400, Zarathustra
>> <adam.chrapkowski@gmail.com> wrote:
>> 
>>> How to easy set size of multi dimentional dynamic array?
>>> 
>>> for example:
>>> class Foo{
>>> private double[][] m_array;
>>> 
>>> this(uint o_length, uint o_width){
>>> // hard way:
>>> this.m_data.length = o_length;
>>> for(uint i = 0; i < this.m_array.length; i++){
>>> this.m_array[i] = new double[o_width];
>>> }
>>> }
>>> }
>> 
>> 
>> Try this:
>> 
>> this(uint o_length, uint o_width){
>> m_array = new double[][](o_length, o_width);
>> }
> 
> Great, ;)
> Thanks Denis

please not that a multidimensional array does not need to be square, so it uses a lot of emory more.
You might be interested at my multidimensional array library (tango only for the moment).
See http://github.com/fawzi/narray/tree/master/INSTALL.txt

ciao
Fawzi