why can't we have array of references.
31  3232 
siddhu wrote:
why can't we have array of references.
References are not objects.
V
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On Dec 5, 2:25 am, siddhu <siddharth....@ gmail.comwrote:
why can't we have array of references.
Reference is just an alias to the variable, no memory is allocated
for a reference. In fact, we can't have a reference to a reference or
a pointer to a reference. Hope it clarifies.
On Dec 5, 12:32 am, "Alf P. Steinbach" <al...@start.no wrote:
* siddhu:
why can't we have array of references.
A reference is not an object, it has no size.
it has a size usually equal to that of a pointer in case of usage an
argument to a none inlined function.
On Dec 5, 12:25 am, siddhu <siddharth....@ gmail.comwrote:
why can't we have array of references.
why don`t use array of const pointers?
class A * const ptrArr[size_enum];
regards,
FM.
terminator wrote:
On Dec 5, 12:32 am, "Alf P. Steinbach" <al...@start.no wrote:
>* siddhu:
>>why can't we have array of references.
A reference is not an object, it has no size.
it has a size usually equal to that of a pointer in case of usage an
argument to a none inlined function.
And when the size isn't equal to that of a pointer, what is it?
V
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terminator <fa***********@ gmail.comwrote in news:b2d73c27-cfd5-42ee-ae2d- 2b**********@s3 6g2000prg.googl egroups.com:
On Dec 5, 12:32 am, "Alf P. Steinbach" <al...@start.no wrote:
>* siddhu:
why can't we have array of references.
A reference is not an object, it has no size.
it has a size usually equal to that of a pointer in case of usage an
argument to a none inlined function.
No, references don't even have to have a physical representation.
Analogous to typedef, a reference only introduces a new name for an object.
It turns out that usually memory for an address is allocated for reference
parameters and reference object members, but it would be a pretty poor
compiler that allocated anything at all for a local reference.
joe
On Dec 5, 2:32 am, "Alf P. Steinbach" <al...@start.no wrote:
* siddhu:
why can't we have array of references.
A reference is not an object, it has no size.
If by size you mean storage, it is *unspecified* that they have
storage or not. So, saying they have no size would be incorrect.
Chapter and verse: 8.3.2 (4) (2007-06-25 draft). :)
Abhishek Padmanabh wrote:
On Dec 5, 2:32 am, "Alf P. Steinbach" <al...@start.no wrote:
>* siddhu:
>>why can't we have array of references.
A reference is not an object, it has no size.
If by size you mean storage, it is *unspecified* that they have
storage or not. So, saying they have no size would be incorrect.
Chapter and verse: 8.3.2 (4) (2007-06-25 draft). :)
The more proper way of answering the original question would then
be "becuase the Standard says so in [dcl.ref]/4".
However, if it's unspecified whether they have storage or not, it
usually means that in a general case they do NOT have storage, and
hence they do NOT have size.
V
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On Dec 5, 2:25 am, siddhu <siddharth....@ gmail.comwrote:
why can't we have array of references.
Arrays of references are not possible because they may or may not
require storage (implemented as to have size or not). In the cases
(implementation s) when they won't have a size, arrays of them won't be
possible. References are not considered as objects by the standards.
They are just aliases. In next standards revision, there might be a
reference_wrapp er added that can be used instead of plain references
wherever you need to make arrays of them or use them with standard
containers. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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