John Wiegley Explains Haskell Lenses by Example

Bay Area Haskell · Talk · 47 min · 2017 · YouTube title: John Wiegley: Putting Lenses to Work

Why it's here

HN recommends it as the fastest way to learn lenses by example, with far-out examples later on.

What it covers

John Wiegley's BayHac 2017 talk walks through Haskell lenses by example, showing many practical uses beyond simple record access. It is aimed at people who want to become productive with the lens library.