20 lines
335 B
Text
20 lines
335 B
Text
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Show 1 + true
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Variable R : Type
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Variable T : Type
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Variable r2t : R -> T
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Coercion r2t
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Variable t2r : T -> R
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Coercion t2r
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Variable f : T -> R -> T
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Variable a : T
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Variable b : R
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Set lean::pp::coercion true
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Set lean::pp::notation false
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Show f a b
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Show f b a
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Variable g : R -> T -> R
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Infix 10 ++ : f
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Infix 10 ++ : g
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Show a ++ b
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Show b ++ a
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