#[sealed]

This crate provide a convinient and simple way to implement the sealed trait pattern, as described in the Rust API Guidelines [1].

[dependencies]
sealed = "0.1"

Example

use sealed::sealed;

#[sealed]
trait T {}

#[sealed]
pub struct A;

impl T for A {}

#[sealed]
pub struct B{
    field_1: i32
}

impl T for B {}

fn main() {
    return
}