Macro extendr_api::data_frame

macro_rules! data_frame {
    () => { ... };
    ($($rest: tt)*) => { ... };
}

Create a dataframe.

Example:

use extendr_api::prelude::*;
test! {
let mydata = data_frame!(x=1, y=2);
assert_eq!(mydata, r!(List(&[r!(1), r!(2)])));
}

Panics on error.