Avoid multiple instances of Singleton?
548
What is an efficient way to implement a singleton pattern in Java?
150628
point of having an instance variable as final?
8937
How do I reference the only element in a singleton set?
79857
Avoid synchronized(this) in Java?
1138
How to avoid having class data shared among instances?
60648
Is Meyers' implementation of the Singleton pattern thread safe?
41842
Is it possible to avoid repeating the class name in the implementation file?
118002
What exactly is the singleton class in ruby?
57935
Why does the instance need to be recreated when restarting a thread?
84345
How can I tell if another instance of my program is already running?
9078
Difference between static class and singleton pattern?
61128
Would it be beneficial to begin using instancetype instead of id?
97127
Made one instance of a class equal to another. – How to cancel that?
26632
Why am I getting objects printed twice?
119077
Singleton: How should it be used
6948
How to prevent a user from having multiple instances of the Same Web application
35175
How to avoid multiple running instances of same handler function when running it from editor?