What are some best practices for using Enumerable methods in Ruby?

What are some best practices for using Enumerable methods in Ruby?

When using Enumerable methods in Ruby, it's best to choose the right method for the task, like using map for transformations and select for filtering.

Can you give me an example of using map and select?

Sure! For map, you can do array.map { |n| n * 2 } to double each element. For select, use array.select { |n| n.even? } to get even numbers.

Are there any performance considerations I should keep in mind?

Yes, be cautious with large datasets. Methods like each can be more efficient than map or select if you don't need to create a new array.

What about chaining Enumerable methods?

Chaining methods can be powerful, but ensure readability. For example, array.select { |n| n.even? }.map { |n| n * 2 } is clear and concise.