Struct extendr_api::wrapper::Expr

pub struct Expr<T>(pub T);

Wrapper for creating expression objects.

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

Trait Implementations

impl<T: Clone> Clone for Expr<T>

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

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

Formats the value using the given formatter.

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

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

Make an expression object from an iterator of Robjs.

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

impl<T: PartialEq> PartialEq<Expr<T>> for Expr<T>

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

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

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

This method tests for !=.

impl<T> StructuralPartialEq for Expr<T>