23 lines
593 B
Text
23 lines
593 B
Text
prelude constant N : Type.{1}
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definition B : Type.{1} := Type.{0}
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constant ite : B → N → N → N
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constant and : B → B → B
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constant f : N → N
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constant p : B
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constant q : B
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constant x : N
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constant y : N
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constant z : N
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infixr ` ∧ `:25 := and
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notation `if` c `then` t:45 `else` e:45 := ite c t e
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check if p ∧ q then f x else y
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check if p ∧ q then q else y
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constant list : Type.{1}
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constant nil : list
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constant cons : N → list → list
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-- Non empty lists
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notation `[` l:(foldr `, ` (h t, cons h t) nil) `]` := l
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check [x, y, z, x, y, y]
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check [x]
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notation `[` `]` := nil
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check []
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