Commit 2024-10-22 21:02 d50b9137
View on Github →chore(Data): use newly introduced finset notation (#18059)
For s : Finset α, replace s.card with #s, s.filter p with {x ∈ s | p x}, ∑ x ∈ s.filter p, f x with ∑ x ∈ s with p x, f x. Rewrap lines around and open the Finset locale where necessary.