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


Why is the returnVal parameter being defined as an empty string on the distance method?

The default value of the returnVal is set to an empty string in Doc.java, so surely this is inherited into the MathUtils.java class. In the video Chris set it equal to an empty string again - is this not breaking DRY principles or is there a reason to do it?

edit: Treehouse seems to have not linked this question to the relevant video so here is a link