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what is singleton class

SATISH PATIBANDLA answered on February 9, 2023 Popularity 9/10 Helpfulness 1/10

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what is singleton class

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class SingletonClass:
    _instance = None

    def __new__(cls):
        if cls._instance is None:
            cls._instance = super(SingletonClass, cls).__new__(cls)
            # Additional initialization code can be placed here
        return cls._instance

# Usage
singleton_instance1 = SingletonClass()
singleton_instance2 = SingletonClass()

print(singleton_instance1 is singleton_instance2)  # Output: True

Popularity 9/10 Helpfulness 1/10 Language python

Source: chat.openai.com

Tags: class python singleton

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Contributed on Jul 17 2023

SATISH PATIBANDLA

0 Answers Avg Quality 2/10

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A singleton is a design pattern in software engineering that restricts 
a class to have only one instance of the object and provides a single 
point of access to it for any part of the code. The purpose of the 
singleton pattern is to ensure that a class has only one instance 
and to provide a global point of access to this instance.

In other words, it is a class that is designed to have only one instance
and to ensure that this instance is easily accessible to the rest of the system.
Singleton classes are often used for things like database connections, 
logging, thread pools, or caches, where having multiple instances could 
lead to unexpected behavior or errors.

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Source: Grepper

Tags: singleton sing

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Contributed on Feb 09 2023

0 Answers Avg Quality 2/10

what is singleton class

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