27 lines
939 B
Text
27 lines
939 B
Text
Variable f {A : Type} (a b : A) : Bool
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Variable a : Int
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Variable b : Real
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Definition tst : Bool := (fun x y, f x y) a b
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(*
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The example above demonstrates that may not be easy to eagerly create
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choice constructs that cover all needed coercions.
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The variables `a` and `b` have type Int and Real respectively.
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Since the type of the function is not known at compilation time, we
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add choice constructs that accomodate possible coercions.
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So, we get the problem:
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Definition tst : Bool := (fun (x : _) (y : _), f _ x y)
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((choice id int_to_real a))
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b
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*)
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Definition tst1 : Bool := (fun x y, f x y) (int_to_real a) b
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Set pp::coercion true
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Set pp::implicit true
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Show Environment 1
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(*
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It is unclear how to implement a simple elaboration problem generator that will produce
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a problem that has the following solution.
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*)
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Definition tst2 : Bool := (fun x y, f (int_to_real x) y) a b
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Show Environment 1
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