Category Theory, The essence of interface-based design - Erik Meijer
Overview
Erik Meijer argues that category theory is the mathematicians' version of interface-based design. He shows that Java 8 lambdas and method references form a Cartesian closed category.
On Hacker News
It is cited as an authoritative take on category theory for programmers and API design.
Topics
Sources
Video by FooCafe, played through YouTube.
Data and selection notes
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HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.
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