What are some practical use cases for Ruby enumerators?

What are some practical use cases for Ruby enumerators?

Ruby enumerators are useful for handling collections of data. They allow you to iterate over elements, transform them, and perform operations like filtering and mapping.

Can you give me an example of how to use an enumerator in Ruby?

Sure! You can create an enumerator from an array and use methods like map to transform the data. For example: array = [1, 2, 3]; enumerator = array.each; enumerator.map { |num| num * 2 } will return [2, 4, 6].

What are the benefits of using enumerators over regular loops?

Enumerators provide a more concise and readable way to handle collections. They also support lazy evaluation, which can improve performance when dealing with large datasets.

Are there any performance considerations I should be aware of?

Yes, while enumerators are generally efficient, using them with very large collections can lead to increased memory usage. It's important to choose the right method based on your specific use case.