How can I use Ruby Lambda functions in a Rails application?

How can I use Ruby Lambda functions in a Rails application?

You can use Ruby Lambda functions in Rails by defining them as anonymous functions. They can be used for callbacks or as arguments to higher-order functions.

Can you give me an example of a Ruby Lambda function in a Rails controller?

Sure! Here's a simple example:

class UsersController < ApplicationController
  def index
    filter = ->(user) { user.active? }
    @active_users = User.all.select(&filter)
  end
end

What are the benefits of using Lambda functions in Rails?

Using Lambda functions can make your code more concise and improve readability. They also allow for better encapsulation of logic.

Are there any performance considerations I should be aware of?

Yes, while Lambdas are generally efficient, excessive use in performance-critical paths can lead to overhead. Always profile your application.