Computer scienceFundamentalsEssentialsSoftware constructionDesign patternsCreational patterns

Singleton

Implemenation situations

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In which of these situations should you use singleton?

Select one option from the list

when you need to create an application that can be unit-tested with relative ease

when you are starting a new project and don't know the exact types of objects you'll work with

when you need to work with a LogManager class and maintain one instance of it

when other company provides your team with their objects through some interface

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