How many instance of the class is initiated?
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Hello
I am just writing an object oriented code in Matlab. I need every object of my classes to know how many instances of that particular class has been made. I have tried persistent data variables or static methods. But no use! I appreciate any help.
Thank You
Hadi
5 件のコメント
Sean de Wolski
2013 年 5 月 30 日
Then why not have these ovbjects be children of a parent object like in handle graphics?
回答 (2 件)
Sean de Wolski
2013 年 5 月 30 日
Here is how I would attack this, (and let me reiterate, I don't know why you need this, there is probably a better way).
I would have singleton class:
That stores members of the other class. Let's call the singleton class, S.
Now you create one of your objects that needs to know about others, let's call it K. K first finds if an object of class S exists, if it does not, then it creates one. If it does, it calls a static method of this S object that bumps up the count. It also, adds a listener to S listening for it's own being deleted event. Now if this object of class K is deleted, the S object can remain up to date.
Alternatively, you could use findobj as is described here to look for some dummy property that all K objects have:
This is probably the easier way to do this.
2 件のコメント
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