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C++-Singleton class


C++-Singleton class

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C++-Singleton class
Tag : cpp , By : Mr. Tacos
Date : January 02 2021, 06:48 AM


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Singleton module or class methods + class instance variables for singleton-like behaviour in Ruby?


Tag : ruby , By : Bas
Date : March 29 2020, 07:55 AM
Any of those help Nothing, as you wrote your code--but a singleton is a class that only allows a single instance. Nothing in the second code snippet disallows instantiation of multiple instances.

In what cases, a singleton design pattern may generate multiple instances of the same singleton class?


Tag : cpp , By : ap.
Date : March 29 2020, 07:55 AM
it helps some times In C++11 there is a new facility to make once-only initialization reliable - std::call_once. You can find a good reference for it here. If you're working with a compiler that supports C++11, this gives you a nice platform-independent, standard way of accomplishing it.
At the platform dependent level, most operating systems provide a means of doing once-only initialization. E.g. in iOS or OS X you can use dispatch_once from Grand Central Dispatch. On Windows, there's a One-Time Initialization API available in Vista and later.

Is class a singleton or not . how to make a class as a singleton or a prototype - in Spring


Tag : java , By : Richard
Date : March 29 2020, 07:55 AM
I wish did fix the issue. By default a class is singleton or not .. ,
By default a class is singleton or not .
enum You {
    INSTANCE;
}

is modifying singleton class codes the only way to extend the functionality of the singleton when using enum version sin


Tag : java , By : Jouni
Date : March 29 2020, 07:55 AM
I wish did fix the issue. When the quote says the "sole instance should be extensible by subclassing", they are talking about situations where:

Is it possible to inherit a singleton class with a base class (non-singleton class). If yes, is it a good practice?


Tag : java , By : Sinisa Ruzin
Date : March 29 2020, 07:55 AM
help you fix your problem I am actually trying to implement something where a singleton class would extend a non-singleton class. ,
1) Is this possible in java?
public enum SomeSingleton { 
  INSTANCE;
  ...
List<Parent> someInstances = Arrays.asList(parentInstanceA, parentInstanceB, thatSingletonInstanceOfMySingleton);
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