Welcome to the Treehouse Community
The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.
How does the 2nd # add_list_item() gets called without explicitly calling it?
Hi in the code body after "list.inspect" how does it call for the # add_list_item without us calling it and prints the question "What is the item called? " ?
Jeff MudayTreehouse Moderator 27,586 Points
The thing I love most about coding is that there are many different right ways to do something, not just one way. Jason is particularly good at demonstrating the flexibility of Ruby and how we can combine operations.
Jason is being a little tricky with his coding by combining the list "push" method and a call to add_list_item(). The line below is executed by first calling "add_list_item()" which queries the user for item and quantity and returns a "hash". The hash is then "pushed" onto the list (also a hash).
He could have broken it down this way too (see below). It uses two lines to accomplish the same task, but you might think this is a little more straightforward.
user_response = add_list_item() # this asks the user for item and quantity list['items'].push(user_response)
Good luck with your Ruby studies-- it is great fun to program!