e4a3b434d7
@Kha The transition has begun :) I found and fixed a few bugs, but it is going well so far.
29 lines
701 B
Text
29 lines
701 B
Text
new_frontend
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structure ConstantFunction (α β : Type) :=
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(f : α → β)
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(h : ∀ a₁ a₂, f a₁ = f a₂)
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instance constFunCoe {α β : Type} : CoeFun (ConstantFunction α β) (fun _ => α → β) :=
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{ coe := fun c => c.f }
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def myFun {α : Type} : ConstantFunction α (Option α) :=
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{ f := fun a => none,
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h := fun a₁ a₂ => rfl }
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def myFun' (α : Type) : ConstantFunction α (Option α) :=
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{ f := fun a => none,
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h := fun a₁ a₂ => rfl }
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set_option pp.all true
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#check myFun 3 -- works
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#check @myFun Nat 3 -- works
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#check myFun' _ 3 -- works
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#check myFun' Nat 3 -- works
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variable (c : ConstantFunction Nat Nat)
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#check c 3 -- works
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#check (fun c => c 3) myFun -- works
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