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test(tests/lean/run): add example for constructive choice

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Leonardo de Moura 2015-05-09 12:02:52 -07:00
parent e9c8de7bdf
commit 9812cfe906
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tests/lean/run/choose_test.lean Normal file
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import data.encodable
open nat encodable
theorem ex : ∃ x, x > 3 :=
exists.intro 6 dec_trivial
reveal ex
eval choose ex
example : choose ex = 4 :=
rfl