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Pointfree style uses composition (among other operators), currying, and partially applied functions, but it refers to something distinct from the sum of those concepts/features

Exactly. But in all fairness to the parent comment to yours, the original article doesn't convey this as well as you lucidly did, and his confusion is perfectly understandable.

Thanks! I'd say at least some of the blame for that is due to how C-family languages make these concepts appear somewhat ... opaque.

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