What is the structure of D arrays?

[Don]

Ashok wrote:
> Sean Kelly wrote:
>> Ashok Wrote:
>>
>>> Actually, I have another question before the one in the subject
>>> line: How many types of arrays are there in D? THEN, I would like to
>>> know their layout/structure in memory.
>> There's one type, and its structure is described in the ABI:
>>
>> http://www.digitalmars.com/d/2.0/abi.html
> 
> How wide is length? And really? There's only one array type? D's age 
> showing! 

Dynamic arrays are internally just a pointer and a length, so there only 
needs to be one structure.