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 trialJoseph Ruben
2,752 Pointsrules for the !
Is there a way to undo a ! without have to retype the variable?
1 Answer
Gilbert Kennen
10,661 PointsNo.
The bang (!) in Ruby is an expression which returns a boolean value. This boolean value knows nothing of how it came into the world, so there is no un-bang method which will undo it. You will need to retype the variable to use it elsewhere.