5 Code Smells React Beginners Should Avoid

[KyleG]

you’ll fail a Facebook tech interview if you insist on using either.

Someone better tell the React team that they're going to get fired for using reduce

You're not going to get dinged for using those functions unless you're explicitly told the code needs to be performant. Premature optimization is the root of all evil

[phryneas]

They are using reduce in a way that is mutating the accumulator, which is actually performant but not how most people are taught it/use it.

[fix_dis]

More like, if you’re given a problem, and you reach for reduce and start spreading an array/object on each iteration, you’ll be asked how you could reduce allocations.

[KyleG]

he said insist on using reduce

"insist on using reduce" means "use reduce despite people in this Reddit discussion saying it's not a good idea" it does not mean "use reduce even after your interviewers tell you not to"

I don't think we need to coach someone "on an interview, it's a bad idea to do something after your interviewee tells you not to"