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 trialTony Brackins
28,766 PointsFat Arrow Refactor
Hello All,
Wondering how to refactor this if possible
const numbers = [1,2,3,4,5,6,7,8,9,10];
numbers.filter(number => number % 2 === 0);
I'm wondering since I have number => number can I do something fancy with number so I wont have to write it twice (thinking ES6)
1 Answer
Steven Parker
231,184 PointsThis is already compact. The first "number" (left of the arrow) identifies it as the argument, the second one shows what should be done with it in the function.
If you don't feel clarity is seriously compromised, you can make it a bit more concise with a single-letter argument and a logical test instead of an equality comparison:
numbers.filter(n => !(n % 2));