Discussion on: Master the Javascript Array Reduce Method with 10 Examples

[lionel-rowe]

You can't possibly be arguing that saving the 2 or 3 minified bytes from writing ,0 or ,'' or the amount of processing power required to add zero to something is somehow worth the likelihood of your code taking a single input type and outputting two unrelated types or throwing an error?

I notice your reverseStr function from your other comment suffers from this problem — did you realize that when you wrote it?

const reverseStr = str => [...str].reduce((a, v) => v + a)

reverseStr('') // throws TypeError

[Jon Randy 🎖️]

Yes