lean4-htt/tests/lean_before_refactoring/run/finset_coe.lean
Sebastian Ullrich fd2c42a8bf chore(library, tests): switch to new attribute declaration syntax
sed -Ei 's/^(\s*)((private |protected )?(noncomputable )?(abbreviation|definition|meta_definition|theorem|lemma|proposition|corollary)\s+\S+\s*)((\s*\[(\S+(\s+[0-9]+)*|priority.*)\])+)\s*/\1attribute \6\n\1\2/' library/**/*.lean tests/**/*.lean
sed -Ei 's/\s+$//' library/**/*.lean  # remove trailing whitespace
2016-08-12 15:36:12 -07:00

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import data.finset data.set
open finset set
attribute [coercion]
definition to_set {A : Type} (s : finset A) : set A := λ a, a ∈ s
constant P {A : Type} (s : set A) : Prop
variable s : finset nat
check P s