25 lines
397 B
Text
25 lines
397 B
Text
import data.num
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section
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parameter {A : Type}
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definition f (a b : A) := a
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infixl `◀`:65 := f
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parameters a b : A
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check a ◀ b
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end
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inductive list (T : Type) : Type :=
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nil {} : list T,
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cons : T → list T → list T
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namespace list
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section
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variable {T : Type}
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notation `[` l:(foldr `,` (h t, cons h t) nil) `]` := l
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check [10, 20, 30]
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end
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end list
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open list
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check [10, 20, 40]
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check 10 ◀ 20
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