It's an implementation of the functional option pattern used a lot in go code. S... | Hacker News

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		arankine on Sept 27, 2020 \| parent \| context \| favorite \| on: Create system diagrams with Go It's an implementation of the functional option pattern used a lot in go code. See https://dave.cheney.net/2014/10/17/functional-options-for-fr... for a rundown.

erik_seaberg on Sept 27, 2020 [–]

It's a functor, though the type system doesn't let you write a reusable fmap.

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