10 lines
152 B
Text
10 lines
152 B
Text
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def f (x : Nat) : StateM Nat Nat := do
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let y ← do
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modify (·+1)
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let s ← get
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pure $ s + x
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pure $ y + 1
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theorem ex1 : (f 5).run' 2 = 9 :=
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rfl
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