Module list 

Thin wrapper around R list (VECSXP).

Provides safe construction from Rust values and typed extraction.

Submodules

Module	Contents
accumulator	ListAccumulator — dynamic list construction with bounded protect stack
named	NamedList — O(1) name-indexed access via HashMap index

Core Types

• List — owned handle to an R list (VECSXP)
• ListMut — mutable view for in-place element replacement
• ListBuilder — fixed-size batch construction
• NamedListBuilder — owned, GC-rooted named lists and data frames
• BuiltList — the builder’s rooted plain-list finish
• IntoList / TryFromList — conversion traits

Re-exports

pub use named_builder::BuiltList;

pub use named_builder::NamedListBuilder;

pub use accumulator::*;

pub use named::*;

Modules

accumulator 🔒

ListAccumulator — unknown-length list construction with bounded stack usage.

named 🔒

NamedList — O(1) name-indexed access to R lists.

named_builder 🔒

Owned construction of heterogeneous named lists and data frames.

Macros

impl_tuple_list 🔒

Structs

List

Owned handle to an R list (VECSXP).

ListBuilder

Builder for constructing lists with efficient protection management.

ListMut

Mutable view of an R list (VECSXP).

Traits

IntoList

Convert things into an R list.

TryFromList

Fallible conversion from an R list into a Rust value.

Functions

into_list_column 👻

Build an R list-column (VECSXP) from values converted one at a time through IntoList.

into_option_list_column 👻

into_list_column for optional cells: None becomes NULL.

list_element 🔒

One element of a list of lists: a VECSXP. A pairlist element is refused, as List refuses a pairlist: a coerced copy would be a new object that nothing roots while the rest of the list is read.