Breaking News: Grepper is joining You.com. Read the official announcement!

what is singleton

Add Answer

answered on December 21, 2021 Popularity 10/10 Helpfulness 4/10

answer what is singleton

related singleton

related Singleton

related what is singleton class

what is singleton

Comment

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.

Popularity 10/10 Helpfulness 4/10 Language whatever

Source: Grepper

Tags: singleton whatever

Link to this answer
Share Copy Link

Contributed on Feb 09 2023

0 Answers Avg Quality 2/10

Closely Related Answers

singleton

Comment

public final class Singleton {

  private static final Singleton INSTANCE = new Singleton();

  private Singleton() {}

  public static Singleton getInstance() { 
    return INSTANCE;
  }
}

Popularity 10/10 Helpfulness 2/10 Language java

Source: ar.wikipedia.org

Tags: java

Link to this answer
Share Copy Link

Contributed on May 04 2022

Adorable Anteater

0 Answers Avg Quality 2/10

singleton

Comment

let instance;
let counter = 0;

class Counter {
  constructor() {
    if (instance) {
      throw new Error("You can only create one instance!");
    }
    instance = this;
  }
}

const singletonCounter = Object.freeze(new Counter());
export default singletonCounter;

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: www.patterns.dev

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Dec 21 2021

Foolish Flamingo

0 Answers Avg Quality 2/10

Singleton

Comment

class SingletonExample
{
    private static $instance;

    // Prevent instantiation of the class through the constructor
    private function __construct()
    {
        // Initialize object properties here, if needed
    }

    // Static method to get the unique instance
    public static function getInstance()
    {
        if (!self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    // Add specific methods of your singleton here
    public function someMethod()
    {
        // Your code here
    }
}


$singleton1 = SingletonExample::getInstance();
$singleton2 = SingletonExample::getInstance();

// Both $singleton1 and $singleton2 refer to the same instance
// You will have only one instance of SingletonExample throughout the system.

Popularity 10/10 Helpfulness 1/10 Language php

Source: chat.openai.com

Tags: php

Link to this answer
Share Copy Link

Contributed on Jul 26 2023

PrototypeCodec

0 Answers Avg Quality 2/10

what is singleton class

Comment

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 clas

Link to this answer
Share Copy Link

Contributed on Jul 17 2023

SATISH PATIBANDLA

0 Answers Avg Quality 2/10

what is singleton

Contents

More Related Answers

what is singleton

Closely Related Answers

singleton

singleton

Singleton

what is singleton class

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.