Struct ListMut 

pub struct ListMut(SEXP);

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.

impl IntoR for ListMut

type Error = Infallible

The error type for fallible conversions.

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

Try to convert this value to an R SEXP.

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

Try to convert to SEXP without thread safety checks.

fn into_sexp(self) -> SEXP

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

unsafe fn into_sexp_unchecked(self) -> SEXP

where Self: Sized,

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

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.

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

Convert from SEXP without thread safety checks.