Hi,
If I have this in a header file:
//Part of the class myClass:
static int myVar=99;
but then in the source file have this:
int myClass::myVar= 77;
which one takes priority?
Thank you,
Q
7  1651 
Quantum wrote:
If I have this in a header file:
//Part of the class myClass:
static int myVar=99;
Not allowed in C++. Non-const static members cannot be
initialised in the class definition.
>
but then in the source file have this:
int myClass::myVar= 77;
which one takes priority?
None. The program is ill-formed.
V
--
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Victor Bazarov wrote:
Quantum wrote:
>If I have this in a header file:
//Part of the class myClass:
static int myVar=99;
Not allowed in C++. Non-const static members cannot be
initialised in the class definition.
>but then in the source file have this:
int myClass::myVar= 77;
which one takes priority?
None. The program is ill-formed.
V
"Not allowed in C++. Non-const static members cannot be initialised in
the class definition."
Yep, right enough... :) I thought there was something weird going on,
but MSVC2K5 was compiling it. I've just cleaned and rebuilt the solution
and it now complains!!! Hmm.... Anyways, thanks for the quick reply! (:
Q
Quantum wrote:
Victor Bazarov wrote:
>Quantum wrote:
>>If I have this in a header file:
//Part of the class myClass:
static int myVar=99;
Not allowed in C++. Non-const static members cannot be
initialised in the class definition.
>>but then in the source file have this:
int myClass::myVar= 77;
which one takes priority?
None. The program is ill-formed.
V
"Not allowed in C++. Non-const static members cannot be initialised
in the class definition."
Yep, right enough... :) I thought there was something weird going on,
but MSVC2K5 was compiling it. I've just cleaned and rebuilt the
solution and it now complains!!! Hmm.... Anyways, thanks for the
quick reply! (:
Just a piece of additional information: if a static integral constant
is initialised in the class definition (like this
static const int myVar = 99;
then the definition outside of the class (if you need one), shall NOT
have an initialiser:
const int myClass::myVar;
V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask
Victor Bazarov wrote:
Quantum wrote:
>Victor Bazarov wrote:
>>Quantum wrote:
If I have this in a header file:
//Part of the class myClass:
static int myVar=99;
Not allowed in C++. Non-const static members cannot be
initialised in the class definition.
but then in the source file have this:
int myClass::myVar= 77;
which one takes priority?
None. The program is ill-formed.
V
"Not allowed in C++. Non-const static members cannot be initialised
in the class definition."
Yep, right enough... :) I thought there was something weird going on,
but MSVC2K5 was compiling it. I've just cleaned and rebuilt the
solution and it now complains!!! Hmm.... Anyways, thanks for the
quick reply! (:
Just a piece of additional information: if a static integral constant
is initialised in the class definition (like this
static const int myVar = 99;
then the definition outside of the class (if you need one), shall NOT
have an initialiser:
const int myClass::myVar;
V
Just curious... when would you need a definition outside of the class?
Mark P wrote:
Victor Bazarov wrote:
>[static const integral data members need a definition]
Just curious... when would you need a definition outside of the class?
When you take address of that variable, for example.
V
--
Please remove capital 'A's when replying by e-mail
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Victor Bazarov wrote:
Mark P wrote:
>Victor Bazarov wrote:
>>[static const integral data members need a definition]
Just curious... when would you need a definition outside of the class?
When you take address of that variable, for example.
I see, so may I then infer from your answer that a static const defined
only within a class does not actually get allocated in memory? Is it
simply replaced by the compiler with its integral value?
Mark P wrote:
Victor Bazarov wrote:
>Mark P wrote:
>>Victor Bazarov wrote:
[static const integral data members need a definition]
Just curious... when would you need a definition outside of the
class?
When you take address of that variable, for example.
I see, so may I then infer from your answer that a static const
defined only within a class does not actually get allocated in
memory? Is it simply replaced by the compiler with its integral
value?
That's generally true for any integral constant, i.e. not necessarily
a member of a class, however, I am not sure there is a requirement to
that extend in the Standard.
V
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