19 lines
540 B
Text
19 lines
540 B
Text
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--| Build a list by copying the given element the specified number of times
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let replicate
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: Natural → ∀(a : Type) → a → List a
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= λ(n : Natural) →
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λ(a : Type) →
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λ(x : a) →
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List/build
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a
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( λ(list : Type) →
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λ(cons : a → list → list) →
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Natural/fold n list (cons x)
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)
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let example0 = assert : replicate 9 Natural 1 ≡ [ 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
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let example1 = assert : replicate 0 Natural 1 ≡ ([] : List Natural)
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in replicate
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