[Agda] `let' in record decl
Nils Anders Danielsson
nad at chalmers.se
Thu Oct 11 12:31:40 CEST 2012
On 2012-10-11 11:51, Andreas Abel wrote:
> On 11.10.2012 10:56, Nils Anders Danielsson wrote:
>> Would it be hard to adopt the following notation instead?
>>
>> module MEndo let open Star in (A : ★) where
>> Endo : ★
>> Endo = A → A
>
> Frankly, I think your notation is more confusing...
Well, typically you don't start with a let:
module M {A B : Set}
(f : A → B)
let open X f in
(p : P f)
where
> But maybe the "let" should be dropped instead, e.g.,
>
> data D (A : Setoid)(A = Setoid.Carrier)(a : A) : A -> Set where
I assume that you don't want to drop let from the syntax of expressions.
I don't want to use different notation for the same thing, depending on
whether I happen to be writing a telescope or an expression.
> Summary: Have three different telescope entries:
>
> x : A
> x = t
> open M args
I think I would find this more appealing if "let" was removed entirely
(but that would be a rather disruptive change).
--
/NAD
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