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Anecdotally, programmers dislike "reduce"

175 points · 283 comments · vinhnx

_moof · 1789625340 · focus · HN ↗
What's hard to understand about it? It's just
```
  x = initial
  for y in collection:
    x = f(y, x)
```
1. ema · 1789628755 · focus · HN ↗
  It's easy but it ain't simple. Because `f` can do arbitrary things to `x` you have to look at it just to know the general shape of the computation. Reduce gives you a lot of the flexibility of imperative programming but with that also a lot of the problems. Sometimes that's the right trade-off but it is good to be aware that it is a trade-off.

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