Trait OptionInner 

#[doc(hidden)]
pub trait OptionInner: Sized {
    const OPTION_NATIVE_BORROW: Option<NativeBorrow>;
    const OPTION_CHARACTER_ONLY: bool;

    // Required methods
    fn option_try_from_sexp(sexp: SEXP) -> Result<Option<Self>, SexpError>;
    unsafe fn option_try_from_sexp_unchecked(
        sexp: SEXP,
    ) -> Result<Option<Self>, SexpError>;
}

Option<Self>: TryFromSexp with an error that converts into SexpError, with Self as the bound’s self type.

Plumbing for the Option<T> blanket below: see the module docs (#1682).

Required Associated Constants

const OPTION_NATIVE_BORROW: Option<NativeBorrow>

<Option<Self> as TryFromSexp>::NATIVE_BORROW.

const OPTION_CHARACTER_ONLY: bool

<Option<Self> as TryFromSexp>::CHARACTER_ONLY.

Required Methods

fn option_try_from_sexp(sexp: SEXP) -> Result<Option<Self>, SexpError>

<Option<Self> as TryFromSexp>::try_from_sexp, its error as a SexpError.

unsafe fn option_try_from_sexp_unchecked( sexp: SEXP, ) -> Result<Option<Self>, SexpError>

<Option<Self> as TryFromSexp>::try_from_sexp_unchecked, its error as a SexpError.

Safety

As TryFromSexp::try_from_sexp_unchecked.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<I> OptionInner for I

where Option<I>: TryFromSexp, <Option<I> as TryFromSexp>::Error: Into<SexpError>,

const OPTION_NATIVE_BORROW: Option<NativeBorrow> = <Option<I> as TryFromSexp>::NATIVE_BORROW

const OPTION_CHARACTER_ONLY: bool = <Option<I> as TryFromSexp>::CHARACTER_ONLY