Just a quick question. I understand that Singleton patterns can be extended and that inheritance is applied. I was just wondering if I called a base class and then a extended class is there additional overhead than if I just called the extended class by itself?
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What does this have to do with a singleton?troelskn– troelskn2009-08-10 09:26:00 +00:00Commented Aug 10, 2009 at 9:26
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Nothing other than that that's the angle OP is coming at it from.chaos– chaos2009-08-10 13:49:28 +00:00Commented Aug 10, 2009 at 13:49
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1 Answer
If what you're talking about is something like
class BaseSingleton {
public function DoSomething() {
}
}
class ExtendedSingleton extends BaseSingleton {
public function DoSomething() {
parent::DoSomething();
}
}
then yes, there is overhead in the call being forwarded from the child class's DoSomething() to the parent class's. If ExtendedSingleton does not redefine DoSomething(), though, there is no additional overhead.
1 Comment
EddyR
You mean the line "public function DoSomething() {parent::DoSomething();}" is redefining the DoSomething() function in the BaseSingleton class?