Single instance of class

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Dean Phils
Dean Phils on 4 Jul 2019
Edited: Andreas Justin on 20 Feb 2024 at 16:40
Hello all! I have just started learning MATLAB and am exploring the OOPS concepts in it. Can someone guide me how to create a class and limit it with only one instance? Also can someone tell me where one can use it

Accepted Answer

Chirag Nighut
Chirag Nighut on 4 Jul 2019
In order to limit a single instance of a class you can use the persistent variables. Such type of classes are called Singleton Class. Such classes can be used
  1. When you wish to create a single client for connecting a server.
  2. Handle for a GUI
Following link should help you understand the singleton class and also its implementation:
  1 Comment
Andreas Justin
Andreas Justin on 20 Feb 2024 at 14:28
Edited: Andreas Justin on 20 Feb 2024 at 16:40
The persistent variables will be reinstantiated if you change the code of a class containing said variables. Even tough you might only change a comment somewhere within the source file (as of R2024a-pre).
Is mlock a valid way to prevent this behaviour?
Or is a constant property the better way?

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