Discussion Thread: DIP 1043--Shortened Method Syntax--Final Review

[WebFreak001]

On Wednesday, 15 June 2022 at 09:21:12 UTC, Mike Parker wrote:
> This is the discussion thread for the Final Review of DIP 1043, 
> "Shortened Method Syntax":
>
> https://github.com/dlang/DIPs/blob/2c2f6c33f5761236266a96bd268c62a06323a5e8/DIPs/DIP1043.md
>
> [...]

I am a strong supporter of this change, I think this will help 
adoption a lot with several language and library constructs, 
especially with things like pattern matching with `std.sumtype`.

I have already used the preview a bit in some of my code and I 
think it's a very good addition to do things like

```d
int width() => shape.match!(
     (Box b) => b.width,
     (Circle c) => c.radius * 2
);

string name()          => shape.match!(s => s.name);
double calculateArea() => shape.match!(s => s.calculateArea);
```

rather than

```d
int width()
{
     return shape.match!(
         (Box b) => b.width,
         (Circle c) => c.radius * 2
     );
}

string name()
{
     return shape.match!(s => s.name);
}

double calculateArea()
{
     return shape.match!(s => s.calculateArea);
}
```

I think the readability (understanding) is just as good as with 
the extended code, but it's much cleaner to look at, especially 
when there are many of these methods in sequence.

I think this DIP would also increase property usage through 
methods.

For tooling I don't see any problem, it's already implemented in 
libdparse and D-Scanner makes use of it already too. The syntax 
is consistent with lambdas and actually feels like it could have 
been in there since the start.