The app hanging after reach 1750MB of RAM

[Stanislav Blinov via Digitalmars-d-learn]

On Wednesday, 19 April 2017 at 07:28:32 UTC, Suliman wrote:

>> 1. You're measuring it wrong. Array length is already measured 
>> in terms of type size.
>
> So should I do:
> cargpspoints.length * cargpspoints[0].sizeof ?

No. .sizeof is the statically known size of a type, it can't take 
into account dynamically allocated memory.
cargpspoint.length * cargpspoints[0].sizeof will tell you the 
estimate size of the array, in bytes.
But each of the elements also has strings - dynamic arrays that 
are allocated elsewhere, their length is not included in that 
calculation.
So you could iterate over the array and sum up lengths of all 
strings to get an estimate.
Even then, that's just that: an estimate. Actual amount of memory 
allocated for a dynamic array T[] *may* be greater than length * 
T.sizeof. The only way to know that is to query the allocator 
used (in this case, GC).