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Spec-ulation Keynote - Rich Hickey

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Further reading 1

What does a module promise its callers? →Try replacing a module whose callers rely on its incidental return order. Start with what the interface says, then trace the decisions it hides and the behaviors people have learned to expect.This video helps answer · Who migrates when a field becomes mandatory?

Caption notes

Hickey reads an API change in two directions: what the caller must provide and what the caller can expect. A new required input excludes earlier calls, unlike relaxing a precondition.

Video or transcript source ↗
Original passages · 2
if you require more than somebody who's giving less now is not going to get what they want
Spec-ulation Keynote - Rich Hickey · ▶ 24:55–25:05
the other thing is relaxation
Spec-ulation Keynote - Rich Hickey · ▶ 22:59–23:09

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