Faster JavaScript with Category Theory
summary
Claims that category theory yields concrete wins: mapping raw HTML-element functions into jQuery methods gives loop fusion, turning two jQuery loops into one and cutting overhead, measured roughly 10–15% speedup on common chains and up to 20% on string-parsing cases like removeAttr; an append escape hatch produces much larger gains in tight loops. Implements a small, modular AMD library (Wheeled) that exposes the underlying DOM manipulators, uses querySelector/Sizzle, lives on GitHub, and passes the jQuery test suite.
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chapters (32)
- 0:00Intro
- 1:00Personal Information
- 1:13John Bender
- 1:26Motivation
- 2:31Performance
- 2:53What is jQuery
- 3:19jQuery Internals
- 3:56jQuery Methods
- 5:15Category Theory
- 6:56Identity Law
- 7:12Composition Law
- 7:52HTML
- 9:24Identity
- 9:37Compose
- 11:36How does this work
- 12:20Example
- 13:15Functor
- 14:36Objects
- 16:28WHA
- 19:57Why you care
- 20:39Rewrapping
- 21:15Fusion
- 22:28Remove Attribute
- 23:51Simplify Manipulation
- 24:46Performance Benefit
- 25:00Caveat
- 25:46Escape Hatch
- 27:47GitHub
- 29:21Modular
- 29:42Radical modularity
- 29:57minification
- 30:20Category Theory jQuery
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