Enum ByOption 

pub enum ByOption<Via> {
    _Phantom(PhantomData<Via>),
}

Pass optional arguments by returning Option<&T::Via>, allowing delegation to underlying type’s strategy.

This enables Option<T> to benefit from the underlying type’s efficient passing without cloning. ByRef doesn’t support this because it would transform Option<T> to &Option<T>; however, we need Option<&T> instead.

See ToGodot::Pass.

Variants

_Phantom(PhantomData<Via>)

Trait Implementations

impl<Via> ArgPassing for ByOption<Via>

where Via: GodotType, <Via as GodotType>::ToFfi<'f>: for<'f> GodotNullableFfi,

type Output<'r, T: 'r> = Option<&'r Via> where ByOption<Via>: 'r

Return type: T or &'r T.