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- Which design pattern would you choose to avoid multiple?
- Which design pattern is best suited to implement a logger and log information into a file?
- What is the easiest design pattern?
- Which design pattern should you use when you want to parameterize objects by an action to perform?
Which design pattern would you choose to avoid multiple?
Which pattern prevents one from creating more than one instance of a variable? Explanation: In singleton pattern, the class itself is made responsible for keeping track of its instance. Thus it ensures that no more than one instance is created.
Which design pattern is best suited to implement a logger and log information into a file?
Which design pattern is best suited to implement a logger and log information into a file? Observer Pattern is well suited for logging framework. You can have Logger class extending Observable, and child classes like log to console, log to Database and log to File system etc and each child class implements Observer.
What is the easiest design pattern?
Singleton (Creational)
This is probably the best known and the simplest to implement design patterns in software engineering. Overuse of the singleton pattern can be a sign of poor architecture but used strategically the singleton pattern is a tried and true solution to a lot of commonly reoccurring scenarios.
Which design pattern should you use when you want to parameterize objects by an action to perform?
As you can see, the Command Pattern is well suited for the following situations: You want to be able to parameterize objects by an action to perform. You need to specify, queue, and execute requests at different times.
