Rich Hickey's JaxConf 2012 keynote examines what values are and why immutable values matter as information systems grow more complex and data gets bigger. It contrasts places with values and builds the case for immutability.

Why Hacker News readers recommend it: HN commenters cite it as the talk that convinced them of immutability and functional programming.

“is what finally sold me on the benefits of pure functional programming and immutable data structures.”

View the original HN discussion

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