Trait RootedVecElement 

#[doc(hidden)]
pub trait RootedVecElement<'a>: Sized {
    const NATIVE_BORROW: Option<NativeBorrow>;

    // Required method
    fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>;
}

An element type of a Vec that converts through TryFromRoot. The element decides what the vector reads: character elements read a STRSXP, the others read a list. One Vec<E> impl over this trait, rather than one impl per element shape, keeps a nested Vec<Vec<..>> from sending type inference into unbounded recursion when the element type is not yet known.

Required Associated Constants

const NATIVE_BORROW: Option<NativeBorrow>

Native storage the vector borrows, for wrapper alias checks.

Required Methods

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

Convert every element, retaining each one an ALTREP accessor returns.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<'a, E: RootedVecElement<'a>> RootedVecElement<'a> for Option<Vec<E>>

where Option<Vec<E>>: TryFromRoot<'a>, <Option<Vec<E>> as TryFromRoot<'a>>::Error: Into<SexpError>,

const NATIVE_BORROW: Option<NativeBorrow>

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

impl<'a, E: RootedVecElement<'a>> RootedVecElement<'a> for Vec<E>

where Vec<E>: TryFromRoot<'a>, <Vec<E> as TryFromRoot<'a>>::Error: Into<SexpError>,

const NATIVE_BORROW: Option<NativeBorrow>

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

impl<'a, T: RNativeType> RootedVecElement<'a> for &'a T

where &'a T: TryFromRoot<'a>, <&'a T as TryFromRoot<'a>>::Error: Into<SexpError>,

const NATIVE_BORROW: Option<NativeBorrow>

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

impl<'a, T: RNativeType> RootedVecElement<'a> for &'a [T]

where &'a [T]: TryFromRoot<'a>, <&'a [T] as TryFromRoot<'a>>::Error: Into<SexpError>,

const NATIVE_BORROW: Option<NativeBorrow>

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

impl<'a, T: RNativeType> RootedVecElement<'a> for Option<&'a T>

where Option<&'a T>: TryFromRoot<'a>, <Option<&'a T> as TryFromRoot<'a>>::Error: Into<SexpError>,

const NATIVE_BORROW: Option<NativeBorrow>

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

impl<'a, T: RNativeType> RootedVecElement<'a> for Option<&'a [T]>

where Option<&'a [T]>: TryFromRoot<'a>, <Option<&'a [T]> as TryFromRoot<'a>>::Error: Into<SexpError>,

const NATIVE_BORROW: Option<NativeBorrow>

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

impl<'a> RootedVecElement<'a> for &'a str

const NATIVE_BORROW: Option<NativeBorrow> = None

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

impl<'a> RootedVecElement<'a> for Cow<'a, str>

const NATIVE_BORROW: Option<NativeBorrow> = None

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

impl<'a> RootedVecElement<'a> for Option<&'a str>

const NATIVE_BORROW: Option<NativeBorrow> = None

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

impl<'a> RootedVecElement<'a> for Option<Cow<'a, str>>

const NATIVE_BORROW: Option<NativeBorrow> = None

fn vec_from_root(root: Root<'a>) -> Result<Vec<Self>, SexpError>

Implementors