Struct extendr_api::wrapper::List

pub struct List<T>(pub T);

Wrapper for creating list (VECSXP) objects.

use extendr_api::prelude::*;
test! {
    let list = r!(List(&[r!(0), r!(1), r!(2)]));
    assert_eq!(list.is_list(), true);
    assert_eq!(list.len(), 3);
    assert_eq!(format!("{:?}", list), r#"r!(List([r!(0), r!(1), r!(2)]))"#);
}

Note: you can use the list! macro for named lists.

Trait Implementations

impl<T: Clone> Clone for List<T>

fn clone(&self) -> List<T>

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for List<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> From<List<T>> for Robj where
    T: IntoIterator,
    T::IntoIter: ExactSizeIterator,
    T::Item: Into<Robj>, 

fn from(val: List<T>) -> Self

Make a list object from an iterator of Robjs.

use extendr_api::prelude::*;
test! {
    let list_of_ints = r!(List(&[1, 2]));
    assert_eq!(list_of_ints.len(), 2);
}

impl<T: PartialEq> PartialEq<List<T>> for List<T>

fn eq(&self, other: &List<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &List<T>) -> bool

This method tests for !=.

impl<T> StructuralPartialEq for List<T>