Conffab by Web Directions
  • Speakers
  • Presentations
  • Conferences
  • Live streams
  • Topics
  • Pricing & Plans
  • Browse
  • Signup
  • Sign In
  • Speakers
  • Presentations
  • Conferences
  • Live streams
  • Topics
  • Pricing & Plans
  • Browse
  • Signup
  • Sign In

Search Conffab

Search presentations, speakers, transcripts, slides and topics.

Searching Conffab

Welcome to the Fold

Katie Ots at Summit 2014
  • JavaScript
  • functional programming
  • computer science
  • map
  • reduce
  • fold
Sign up for Conffab Free to watch this and hundreds of other videos for free
  • Details

Reduce, accumulate, compress or fold — whatever you call it, this higher-order-function family is a set of power tools every programmer should have in their arsenal. However, it can take some time and effort to master them. This presentation will step you through what you need to know to use fold effectively as a JavaScript programmer, and shed some light on how it shines in other contexts.

You may also be interested in

Thumbnail for Understanding Recursion for Elegant Solutions

Understanding Recursion for Elegant Solutions

Ryan Yu

Web Directions Developer Summit 2025

Thumbnail for The joy of recursion, immutable data, and pure functions: Making mazes with JavaScript

The joy of recursion, immutable data, and pure functions: Making mazes with JavaScript

James Sinclair

Dev Summit ’24

Thumbnail for Dependency Injection with React Context

Dependency Injection with React Context

Erin Zimmer

Dev Summit ’24

Thumbnail for New Map and Set methods in JS

New Map and Set methods in JS

Zach Jensz

Web Directions Code 2025

Thumbnail for Mastering the JavaScript Engine: A Deep Dive into the V8

Mastering the JavaScript Engine: A Deep Dive into the V8

Anirudh Sharma

Code ’23

Thumbnail for Upgrading JavaScript’s collections

Upgrading JavaScript’s collections

Phil Nash

Code ’24

Thumbnail for Exploring the Event Loop

Exploring the Event Loop

Ikram Saedi

Summit ’23

Thumbnail for Strength in weakness: JavaScript memory management and weak references

Strength in weakness: JavaScript memory management and weak references

Dan Shappir

Global Scope 2022

More presentations from Summit 2014

Thumbnail for Interconnected

Interconnected

Matt Webb

Summit 2014

Thumbnail for Convenient Fictions

Convenient Fictions

Erin Moore

Summit 2014

Thumbnail for Some of These Things Are Not Like the Others

Some of These Things Are Not Like the Others

Tom Armitage

Summit 2014

Thumbnail for Doing Simple. Honest. Work.

Doing Simple. Honest. Work.

Scott Thomas

Summit 2014

Thumbnail for Open for Open Questions

Open for Open Questions

Younghee Jung

Summit 2014

Thumbnail for Lean Engineering

Lean Engineering

Bill Scott

Summit 2014

Thumbnail for A State of Change

A State of Change

Mark Dalgleish

Summit 2014

Thumbnail for Bit Rot in the Documentation

Bit Rot in the Documentation

Sarah Maddox

Summit 2014

© 2026

  • About
  • Speakers
  • Presentations
  • Conferences
  • Contact
  • Sign in
Sign Up