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chore: add doc-string for Prod.mk (#3856)

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Kim Morrison 2024-04-13 09:55:20 +02:00 • committed by GitHub
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src/Init/Prelude.lean
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@ -477,6 +477,8 @@ and `Prod.snd p` respectively. You can also write `p.fst` and `p.snd`.
For more information: [Constructors with Arguments](https://lean-lang.org/theorem_proving_in_lean4/inductive_types.html?highlight=Prod#constructors-with-arguments)
-/
structure Prod (α : Type u) (β : Type v) where
/-- Constructs a pair from two terms. -/
mk ::
/-- The first projection out of a pair. if `p : α × β` then `p.1 : α`. -/
fst : α
/-- The second projection out of a pair. if `p : α × β` then `p.2 : β`. -/