Re: [libgpiod][PATCH V9 6/8] bindings: rust: Add examples to libgpiod crate

[Bartosz Golaszewski <brgl@xxxxxxxx>]

On Mon, Nov 14, 2022 at 11:03 AM Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
>
> On 10-11-22, 19:26, Bartosz Golaszewski wrote:
> > I'm looking at it and thinking that it would look much better as:
> >
> > let settings = line::Settings::new()
> >     .set_direction(Direction::Output)
> >     .set_output_value(Value::new(value))
> >     .build()?;
> >
> > settings would not need to be mutable (we'd have some intermediate
> > SettingsBuilder object?) and could be directly passed to
> > add_line_settings()?
> >
> > We now have chained mutators for LineSettings in C++ and keyword
> > arguments in Python - somehow I think that the former suits rust much
> > better than passing an array of properties.
>
> We already support chained mutators in the Rust bindings. This example can also
> be written as:
>
>          let mut lsettings = line::Settings::new()?;
>
>          lsettings
>              .set_direction(Direction::Output)?
>              .set_output_value(Value::new(value)?)?;
>
> --
> viresh

Ah, I missed that, my bad.

Would it also work in non-mutable way like

let lsettings = line::Settings::new.set_direction(Direction::Output)?;

?