Macro positive_isize 

macro_rules! positive_isize {
    ($e:expr $(,)?) => { ... };
}

Creates a PositiveIsize checked at compile time.

This macro takes a single argument that must be a positive isize. Negative values will cause a compile error.

use sign_bound::{PositiveIsize, positive_isize};

let val: PositiveIsize = positive_isize!(123);