Re: newbie question on singleton class
On 2007-05-12 15:53, email@example.com wrote:
I liked this article by Danny Kalev on the singleton design class:
However I was confused by this:
QUOTE BEGINS HERE
The class's implementation looks like this:
Singleton* Singleton::pinstance = 0;// initialize pointer
Singleton* Singleton::Instance ()
if (pinstance == 0) // is it the first call?
pinstance = new Singleton; // create sole instance
return pinstance; // address of sole instance
//... perform necessary instance initializations
QUOTE ENDS HERE
My confusion stems from the fact that pinstance is a private static
member of Singleton.
So I would have thought that Singleton* Singleton::pinstance = 0;
violates private access.
What am I missing?
That's the only way to initialize a static member, since they have to be
initialized before the rest of the program is run.
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