Single instance of class

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

Answer 1

[Chirag Nighut]

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:

https://in.mathworks.com/matlabcentral/fileexchange/24911-design-pattern-singleton-creational

[Andreas Justin]

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?