Struct IterRealData 

pub struct IterRealData<I: Iterator<Item = f64>> {
    state: IterState<I, f64>,
}

Iterator-backed real (f64) vector data adaptor.

Wraps an iterator producing f64 values and implements the data-level traits (AltrepLen + AltRealData) for backing an ALTREP real vector. To expose it to R, wrap it in a #[derive(AltrepReal)] + #[altrep(manual)] struct (see the module docs).

Fields

state: IterState<I, f64>

Implementations

impl<I: Iterator<Item = f64>> IterRealData<I>

pub fn from_iter(iter: I, len: usize) -> Self

Create from an iterator with explicit length.

impl<I: ExactSizeIterator<Item = f64>> IterRealData<I>

pub fn from_exact_iter(iter: I) -> Self

Create from an ExactSizeIterator (length auto-detected).

Trait Implementations

impl<I: Iterator<Item = f64>> AltRealData for IterRealData<I>

fn elt(&self, i: usize) -> f64

Get the real element at index i.

fn as_slice(&self) -> Option<&[f64]>

Optional: return a pointer to contiguous data if available.

fn get_region(&self, start: usize, len: usize, buf: &mut [f64]) -> usize

Optional: bulk read into buffer (clamped to available data).

fn is_sorted(&self) -> Option<Sortedness>

Optional: sortedness hint.

fn no_na(&self) -> Option<bool>

Optional: does this vector contain any NA values?

fn sum(&self, _na_rm: bool) -> Option<f64>

Optional: optimized sum.

fn min(&self, _na_rm: bool) -> Option<f64>

Optional: optimized min.

fn max(&self, _na_rm: bool) -> Option<f64>

Optional: optimized max.

impl<I: Iterator<Item = f64>> AltrepLen for IterRealData<I>

fn len(&self) -> usize

Returns the length of this ALTREP vector.

fn is_empty(&self) -> bool

Returns true if the vector is empty.

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.