Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Ruby Ruby Booleans Build a Simple Todo List Program Part 2: Todo Item Methods

Jeremy Conley
Jeremy Conley
16,657 Points
Posted by Jeremy Conley
Jeremy Conley
16,657 Points

The to_s method

Why don't you need to call the to_s method like you called the mark_complete! method?

Jeremy Lindstrom
Jeremy Lindstrom
6,646 Points

The mark_complete is one you created for the actual program. Sorry if I am ignorant here, but using to_i, to_f, and to_s, are built in methods in ruby that change the output to to_i will change the output to an integer if it can, to_s will change it to a string if it can, and to_f to change a decimal to a float... This is a great book to go through as well as you go through these lessons. https://pine.fm/LearnToProgram/ it's a ruby book.

Hopefully that's helped a bit? :)

Jeremy Conley
Jeremy Conley
16,657 Points
Jeremy Conley
Jeremy Conley
16,657 Points

Well in this case we also created a to_s method for the program

1 Answer

Brandon Barrette
Brandon Barrette
20,485 Points
Brandon Barrette
Brandon Barrette
20,485 Points

So you can override the default to_s method, which is what happened here. This way, you don't need to format it multiple times elsewhere. Anytime you print the todo_item, it automatically calls the to_s. Here it will be overridden by what you've defined.