[chuck-users] .cap() for multi-dimensional arrays

Mark Pauley mpauley at mac.com
Wed Oct 3 11:23:59 EDT 2007

In some languages (like C) multi-dimensional arrays do need to be  
rectangular.  This is because it's really just one big array.  i.e.  
If you

int foo[2][3];

you're doing exactly the same as

int foo[6];

except that the compiler will do a bit of sugar for you and multiply  
your outer index by the inner array size and add it to your inner index.

In java this is not the case because each index into your outer array  
is infact a ref to an array object.


On Oct 3, 2007, at 6:54 AM, Kassen wrote:

> On 10/3/07, Spencer Salazar <ssalazar at cs.princeton.edu> wrote:
> It makes sense when you think of multi dimensional arrays as just
> arrays of arrays.  Additionally each sub-array need not be of equal
> length.
> Ah! I didn't think your could do that, I had assumed the  sub- 
> arrays needed to be equal length.
> In that case I withdraw my comment about the need for the index  
> being ugly, obviously. In that case it's also quite coherent that  
> we need ask to get the .cap() for higher dimensions in exactly that  
> way but I still think a note about this in the manual couldn't hurt.
> Thanks for the demonstration!
> Kas.
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