25 lines
481 B
Text
25 lines
481 B
Text
open nat prod
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set_option pp.coercions true
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definition s : nat × nat := {| prod, pr1 := 10, pr2 := 20 |}
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structure test :=
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(A : Type) (a : A) (B : A → Type) (b : B a)
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definition s2 := ⦃ test, a := 3, b := 10 ⦄
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eval s2
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definition s3 := {| test, a := 20, using s2 |}
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eval s3
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definition s4 := ⦃ test, A := nat, B := λ a, nat, a := 10, b := 10 ⦄
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definition s5 : Σ a : nat, a > 0 :=
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⦃ sigma, pr1 := 10, pr2 := of_is_true trivial ⦄
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eval s5
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check ⦃ unit ⦄
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