What is bundle exec and when should I use it?

What is bundle exec and when should I use it?

Bundle exec is a command used in Ruby applications to execute a script in the context of the current bundle. It ensures that the correct versions of gems specified in your Gemfile are used.

Why is it important to use bundle exec?

Using bundle exec helps avoid version conflicts between gems. It ensures that your application runs with the exact dependencies it was developed with.

Can you give me an example of how to use it?

Sure! If you have a Ruby script called 'app.rb', you would run it with: bundle exec ruby app.rb.

What happens if I don't use bundle exec?

If you don't use bundle exec, your script might run with different gem versions, potentially leading to errors or unexpected behavior.