Watch CSX Mentor, Katrina, explain one possible solution for CSX Callbacks & Higher Order Functions Unit: groupBy on Codesmith's free online learning platform CSX - https://csx.codesmith.io/. As you build with code, it's important to remember there are multiple ways to solve the coding challenges in CSX, just like there will be multiple ways to solve the challenges you encounter in the code you build throughout your journey. Explore more JavaScript challenges and discover different solutions on https://csx.codesmith.io/ SUBSCRIBE for more! ð https://tinyurl.com/codesmithsub ð Stay connected to the Codesmith community! ðĐâðŧ Codesmith: https://www.codesmith.io/ ðĨ Learn JavaScript for Free: https://csx.codesmith.io/ Follow Codesmith to stay updated! Facebook:   / codesmithhq  Instagram:   / codesmithio  Twitter:   / codesmith_  LinkedIn:   / codesmith-llc Â