Struct CollectStrings 

pub struct CollectStrings<I>(pub I);

Write an ExactSizeIterator of String directly into an R character vector.

Strings require per-element CHARSXP allocation (no bulk copy_from_slice), so this is a separate type from Collect.

Example

#[miniextendr]
fn upper(words: Vec<String>) -> CollectStrings<impl ExactSizeIterator<Item = String>> {
    CollectStrings(words.into_iter().map(|w| w.to_uppercase()))
}

Tuple Fields

0: I

Trait Implementations

impl<I> IntoR for CollectStrings<I>

where I: ExactSizeIterator<Item = String>,

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

where Self: Sized,

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.