#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(new_range_api)]
use core::range::RangeFrom;
fn main() {
    assert_eq!(RangeFrom::from(2..), core::range::RangeFrom { start : 2 });
    assert_eq!(2 + 3 + 4, RangeFrom::from(2..).into_iter().take(3).sum());
}