// foo is an associative array/hashtable with
 // key type: string
 // value type: int[10]
 //
int[10][string] foo;

// foo["a"] = new int[10]; // Range violation at runtime

// foo["a"][0] = 1; // Range violation at runtime

On Wednesday, 21 March 2018 at 15:53:32 UTC, tipdbmp wrote:
> int[10][string] foo;

One option is to initialize like this

---
void main() {
   int[10][string] foo;

   if("a" !in foo)
	foo["a"] = [0,0,0,0,0,0,0,0,0,0]; // set all to zero to create the key

   foo["a"][4] = 4;  // now valid to set individual element
}
---

I see. I guess the other would be:

{
    int[8192] bar;
    int[8192][string] foo;
    foo["a"] = bar;
    foo["a"][8191] = -1;
}

On Wednesday, 21 March 2018 at 18:31:29 UTC, tipdbmp wrote:
> I see. I guess the other would be:
>
> {
>     int[8192] bar;
>     int[8192][string] foo;
>     foo["a"] = bar;
>     foo["a"][8191] = -1;
> }

https://run.dlang.io/is/AK2X2t

Are you looking to use static arrays or dynamic? You can't use the new keyword if it static.