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Typing for variables in let expressions #1637

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jonaprieto opened this issue Nov 22, 2022 · 2 comments · Fixed by #1785
Closed

Typing for variables in let expressions #1637

jonaprieto opened this issue Nov 22, 2022 · 2 comments · Fixed by #1785
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@janmasrovira
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priority:high syntax
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0.3 - Valencia

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@jonaprieto
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jonaprieto commented Nov 22, 2022 •
edited by lukaszcz
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Instead of:

let { x : A;
      x := y } in z;

We want to type:

let x : A := y in z;
@jonaprieto jonaprieto added this to the 0.3 milestone Nov 22, 2022
@lukaszcz lukaszcz mentioned this issue Jan 13, 2023
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lukaszcz commented Jan 13, 2023 •
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With the shorter syntax we should allow omitting the braces. Otherwise it gets unnecessarily verbose, in my opinion.

jonaprieto added a commit that referenced this issue Jan 19, 2023
@lukaszcz @jonaprieto
Restructure the documentation and add a tutorial (#1718)
b95abea 
* Closes #1597 
* Closes #1624 
* Closes #1633 

The tutorial uses syntax which has not been implemented yet: it depends
on
- #1637, 
- #1716, 
- #1639,
- #1638.

The tutorial also assumes the following issues are done: 
- #1720, and
- #1701.

Co-authored-by: Jonathan Cubides <jonathan.cubides@uib.no>
@janmasrovira janmasrovira mentioned this issue Jan 30, 2023
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@janmasrovira janmasrovira linked a pull request Jan 30, 2023 that will close this issue
Allow type signatures to have a body #1785
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janmasrovira commented Jan 30, 2023 •
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@lukaszcz I agree. Moreover, since the braces for let expressions serve no purpose, I think we should get rid of them entirely. See #1786

paulcadman pushed a commit that referenced this issue Jan 31, 2023
@janmasrovira
Allow type signatures to have a body (#1785)
38622b2 
- Closes #1637.

A function type signature is now allowed to have a body. This is valid
for both top level and let definitions.
```
not : Bool -> Bool := λ {
 | true := false
 | false := true
};
```
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Allow type signatures to have a body anoma/juvix
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@lukaszcz @jonaprieto @janmasrovira