Hacker News Reader

Comment by ereyes01 | Hacker News Reader

For loops and their map/filter/reduce functional equivalents to me are just that: equivalent constructs, two styles/paradigms of doing the same thing. Can you elaborate on why one is poorer and the other much more productive in absolute terms?

View on HN

Not OP. I work with TypeScript and Go, and switching back and forth, I find it much easier to express my thoughts in TypeScript and just write them out without getting bogged down in the tiniest details every single time I want to map, filter or reduce something. Go is verbose in that way which makes me lose my train of thought because of a lot more typing, and it makes it harder for me get the gist of code because I have to actually read and not gloss over the Go loops to make sure they do what I think they do.

TypeScript/JavaScript:

    const itemIDs = items.map((item) => item.ID)

Go:

    itemIDs := make([]uint64, 0, len(items))
    for _, item := range items {
        itemIDs = append(itemIDs, item.ID)
    }

Reply on news.ycombinator.com