13 lines
390 B
Text
13 lines
390 B
Text
import system.IO data.list
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open list
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/- B and unit must be in the same universe
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So, we must put B at Type₁ or use poly_unit
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since unit is at Type₁
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-/
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definition for {A : Type} {B : Type} : list A → (A → IO B) → IO poly_unit
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| [] f := return poly_unit.star
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| (x::xs) f := do f x, for xs f
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vm_eval for [1,2,3,4,5] (λ i, do put_str "value: ", put_nat i, put_str "\n")
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