---
title: "418: Mental Models For Reduce Functions"
url: https://daily.dev/posts/418-mental-models-for-reduce-functions-cqorfc1mk
source_url: https://bikeshed.thoughtbot.com/418
type: article
source: "RUBYLAND"
published: 2024-03-12T04:23:35.146Z
updated: 2024-05-09T09:28:18.744Z
tags: ["functional-programming", "recursion"]
reading_time: 30
upvotes: 0
comments: 0
language: en
---

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# 418: Mental Models For Reduce Functions

**[RUBYLAND](https://daily.dev/sources/rubyla)** · 30 min read · 0 upvotes · 0 comments

## Summary

Joël and Stephanie discuss their mental models for reduce functions, including optimization techniques, the importance of understanding the combining operation, and the use of custom objects as the accumulator. They also touch on the use of each and map instead of reduce, and the concept of monoids in reducing.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://bikeshed.thoughtbot.com/418>

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---

Tags: [#functional-programming](https://daily.dev/tags/functional-programming), [#recursion](https://daily.dev/tags/recursion)

[View this post on daily.dev](https://daily.dev/posts/418-mental-models-for-reduce-functions-cqorfc1mk)