compile time arrays

[Androthi]

c3 is leaning heavily into macros and compile time features. it would be helpful for code generation if there were proper compile time mutable arrays which would make it easier to use, as well as being less bug prone.

eg:

int $value = 100;
int[20] $arr;
$arr[5] += $value;

i believe currently, you have to extract the value at index, modify it, then build a new array by concatenation.

[lerno]

Let's make it happen.