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Built pattern is another design pattern from the creation of design patterns category.

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The features of the Singleton pattern are the following, it prevents the instantiation of a class more

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than once.

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So basically you cannot create two objects of the same class, that class that implements the Singleton

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pattern and also provide single access to an object.

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Where can you use the singleton patterns?

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If, for example, your scope is to create a longer for for your actions, for the actions that your

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program performs, you can create a Singleton class that will log all the actions that your program

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executes.

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This is the example that we will use later on in our code.

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Another use case might be a report.

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So, for example, you want to create a report of your unique tests.

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So, for example, you don't you don't you don't want to use something, an external library that will

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do that for you and you want to implement your own.

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You may use the Singleton pattern to create such a report, a and also a cache.

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So it doesn't make sense to have multiple objects that will store your cache, some objects in your

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cache.

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It might make sense to have a single instance of an object that will store everything.

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And you can call this instance from many, many places in your code.

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Let's take a look in the code to see how exactly we can implement the Singleton pattern.