Passing an array by reference?

[Rishub Nagpal via Digitalmars-d-learn]

On Thursday, 24 July 2014 at 16:15:44 UTC, John Colvin wrote:
> On Thursday, 24 July 2014 at 16:06:00 UTC, Rishub Nagpal wrote:
>>  1 class Test
>>  2 {
>>  3     int[][] array;
>>  4     this(ref int[][] d)
>>  5     {
>>  6         array = d;
>>  7     }
>>  8
>>  9 }
>> 10
>> 11 void main()
>> 12 {
>> 13     Test t = new Test([[1,1],[1,1]]);   //does not compile
>> 14 }
>> 15
>>
>>
>> what is the best way to pass a literal ([[1,2],[3,4]]) by 
>> reference? Is using ref the best way? I am still a bit fuzzy 
>> with in/out and scope
>
> Why do you need to pass the array by reference? D's slices are 
> just windows on to memory, they don't copy the contents when 
> you pass them around.
>
> Anyway, if you do need ref, the problem is that [[1,1],[1,1]] 
> is a temporary, an rvalue, and ref can't take rvalues.


Ah I did not know that. jwhear on IRC cleared it up for me
http://dpaste.dzfl.pl/c7ae7e71d45c