Struct FromList 

pub struct FromList<T>(pub T);

You can use the FromList wrapper to coerce a Robj into a list.

use extendr_api::prelude::*;
test! {
    let list = list!(1, 2);
    let vec : FromList<Vec<i32>> = list.try_into()?;
    assert_eq!(vec.0, vec![1, 2]);
}

Tuple Fields

0: T

Trait Implementations

impl<T> TryFrom<Robj> for FromList<Vec<T>>

where T: TryFrom<Robj>, <T as TryFrom<Robj>>::Error: Into<Error>,

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

You can use the FromList wrapper to coerce a Robj into a list.

use extendr_api::prelude::*;
test! {
    let list = list!(1, 2);
    let vec : FromList<Vec<i32>> = list.try_into()?;
    assert_eq!(vec.0, vec![1, 2]);
}

type Error = Error

The type returned in the event of a conversion error.