Type Alias RColumn 

pub type RColumn<T> = RArray<T, 1>;

Aliased Type

pub struct RColumn<T> {
    robj: Robj,
    _data: PhantomData<T>,
}

Fields

robj: Robj

Owning Robj (probably should be a Pin).

_data: PhantomData<T>

Data type of the n-array

Implementations

impl<T> RColumn<T>

where T: ToVectorValue, Robj: for<'a> AsTypedSlice<'a, T>,

pub fn new_column<F: FnMut(usize) -> T>(nrows: usize, f: F) -> Self

Make a new column type.

pub fn nrows(&self) -> usize

Get the number of rows.

pub fn iter(&self) -> impl Iterator<Item = &T>

Returns an iterator over the elements of the column.

This method is experimental and likely to be unstable for a while.

use extendr_api::prelude::*;
test! {
    let col = RColumn::new_column(3, |r| [1., 2., 3.][r]);
    let sum = col.iter().sum::<f64>();
    assert_eq!(sum, 6.);
}

pub fn iter_mut(&mut self) -> impl Iterator<Item = &mut T>

Returns a mutable iterator over the elements of the column.

This method is experimental and likely to be unstable for a while.

Trait Implementations

impl<T> TryFrom<&Robj> for RColumn<T>

where Robj: for<'a> AsTypedSlice<'a, T>,

type Error = Error

The type returned in the event of a conversion error.

fn try_from(robj: &Robj) -> Result<Self>

Performs the conversion.

impl<T> TryFrom<Robj> for RColumn<T>

where Robj: for<'a> AsTypedSlice<'a, T>,

type Error = Error

The type returned in the event of a conversion error.

fn try_from(robj: Robj) -> Result<Self>

Performs the conversion.