Macro ne

macro_rules! ne {
    ($elem:expr; $n:expr) => { ... };
    ($single:expr) => { ... };
    ($head:expr, $($tail:expr),+ $(,)?) => { ... };
}

Creates a [NonEmptyVec] containing the arguments.

This macro is very similar in goal to the standard library’s vec! macro:

• Create a [NonEmptyVec] containing a given list of elements:

let ne = ne![1, 2, 3];
assert_eq!(ne[0], 1);
assert_eq!(ne[1], 2);
assert_eq!(ne[2], 3);

• Create a [NonEmptyVec] from a given element and size:

let ne = ne![1; 3];
assert_eq!(ne, NonEmptyVec::from_vec(vec![1, 1, 1]).unwrap());

Note that unlike Vecs, it is not possible to create an empty [NonEmptyVec] using this macro!