singleton problem

[Magcialking]

I'm writting a code using singleton idea much like this one:

//I have it simplified as to be brief
class a{
public:
static a&get(){return obj;}

void fun(){}

private:
static a obj;
}

int main(){
a::get().fun();
}

the problem occurs during the linking process I guess, 'cause the
message returned as follow

main.cpp:: undefined reference to `filelist::_obj'

without line number

I don't know what's going wrong here

Could anybody help me?

 

[Default User]

I'm writting a code using singleton idea much like this one:

//I have it simplified as to be brief
class a{
public:
static a&get(){return obj;}

void fun(){}

private:
static a obj;
}

int main(){
a::get().fun();
}

the problem occurs during the linking process I guess, 'cause the
message returned as follow

main.cpp:: undefined reference to `filelist::_obj'

<http://www.parashift.com/c++-faq-lite/ctors.html#faq-10.11>




Brian

 

[visu.murthy]

Hi,

I presume you had forgotten to end the definition of the class witha
semi clon (

Viswanath

 

[bankrock]

you should write the definition of the static variable after the class
decleration, like this:

a a:bj;

otherwise there would be a link problem.
"Magcialking дµÀ£º
"

 

[Default User]

Hi,

I presume you had forgotten to end the definition of the class witha
semi clon (

Who are you talking to? You replied to my message, but I didn't write
that code.

You also completely ignored this part that i DID write:




Brian

 

[BobR]

(e-mail address removed) wrote in message ...

Huh? Let's put this in the proper order.

On Dec 12, 9:27 am, "Default User" wrote:

text -- Show quoted text -

Hi,

I presume you had forgotten to end the definition of the class witha
semi clon (
Viswanath

What class definition?