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ListMut

miniextendr_api::list

Struct ListMut

pub struct ListMut(SEXP);

Expand description

Mutable view of an R list (VECSXP).

This is a wrapper type instead of &mut [SEXP] to avoid exposing a raw slice that could become invalid if list elements are replaced with NULL.

Tuple Fields§

§0: SEXP

Implementations§

impl ListMut

pub const unsafe fn from_raw(sexp: SEXP) -> Self

Wrap an existing VECSXP without additional checks.

§Safety

Caller must ensure sexp is a valid VECSXP and remains managed by R.

pub const fn as_sexp(&self) -> SEXP

Get the underlying SEXP.

pub fn len(&self) -> isize

Length of the list (number of elements).

pub fn is_empty(&self) -> bool

Returns true if the list is empty.

pub fn get(&self, idx: isize) -> Option<SEXP>

Get raw SEXP element at 0-based index. Returns None if out of bounds.

pub fn set(&mut self, idx: isize, value: SEXP) -> Result<(), SexpError>

Set raw SEXP element at 0-based index.

Trait Implementations§

impl Debug for ListMut

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

impl IntoR for ListMut

type Error = Infallible

The error type for fallible conversions. Read more

fn try_into_sexp(self) -> Result<SEXP, Self::Error>

Try to convert this value to an R SEXP. Read more

unsafe fn try_into_sexp_unchecked(self) -> Result<SEXP, Self::Error>

Try to convert to SEXP without thread safety checks. Read more

fn into_sexp(self) -> SEXP

Convert this value to an R SEXP, panicking on error. Read more

unsafe fn into_sexp_unchecked(self) -> SEXP
where Self: Sized,

Convert to SEXP without thread safety checks, panicking on error. Read more

impl TryFromSexp for ListMut

type Error = SexpError

The error type returned when conversion fails.

fn try_from_sexp(sexp: SEXP) -> Result<Self, Self::Error>

Attempt to convert an R SEXP to this Rust type. Read more

unsafe fn try_from_sexp_unchecked(sexp: SEXP) -> Result<Self, Self::Error>

Convert from SEXP without thread safety checks. Read more

Auto Trait Implementations§

impl Freeze for ListMut

impl RefUnwindSafe for ListMut

impl Send for ListMut

impl Sync for ListMut

impl Unpin for ListMut

impl UnsafeUnpin for ListMut

impl UnwindSafe for ListMut

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> RDebug for T
where T: Debug,

fn debug_str(&self) -> String

Get a compact debug string representation.

fn debug_str_pretty(&self) -> String

Get a pretty-printed debug string with indentation.

impl<T> SizeHint for T
where T: ?Sized,

default fn lower_bound(&self) -> usize

🔬This is a nightly-only experimental API. (core_io_internals)

Returns a lower bound on the number of elements this container-like item contains. For example, an array [u8; 12] could return any value between 0 and 12 inclusively as a correct implementation. Read more

default fn upper_bound(&self) -> Option<usize>

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an upper bound on the number of elements this container-like item contains if it can be determined, otherwise None. Read more

final fn size_hint(&self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an estimate for the number of elements this container like type contains. Read more

impl<T> SizedTypeProperties for T

#[doc(hidden)]
const SIZE: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)

#[doc(hidden)]
const ALIGN: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)

#[doc(hidden)]
const ALIGNMENT: Alignment = _

🔬This is a nightly-only experimental API. (ptr_alignment_type)

#[doc(hidden)]
const IS_ZST: bool = _

🔬This is a nightly-only experimental API. (sized_type_properties)

true if this type requires no storage. false if its size is greater than zero. Read more

#[doc(hidden)]
const LAYOUT: Layout = _

🔬This is a nightly-only experimental API. (sized_type_properties)

#[doc(hidden)]
const MAX_SLICE_LEN: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)

The largest safe length for a [Self]. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes