stackbox 0.2.2

`&own`ing references in stable Rust - no_std-friendly Box
Documentation 
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//! [`StackBox`]: `StackBox`
//!
#![doc = include_str!("../README.md")]
#![cfg_attr(
    not(any(doc, feature = "std", test)),
    no_std,
)]

#![allow(unused_parens)]
#![deny(rust_2018_idioms)]
#![allow(explicit_outlives_requirements)] // much unsafe code; better safe than sorry

#[cfg(feature = "alloc")]
extern crate alloc;

#[cfg(test)]
extern crate self as stackbox;

pub
mod dyn_traits;

mod marker;

mod ptr;

pub use slot::{mk_slot, Slot};
mod slot;

pub use stackbox_mod::{StackBox, slice};
#[path = "stackbox/mod.rs"]
mod stackbox_mod;

/// This crates prelude: usage of this crate is designed to be ergonomic
/// provided all the items within this module are in scope.
pub
mod prelude {
    #[doc(no_inline)]
    pub use crate::{
        custom_dyn,
        dyn_traits::{
            any::StackBoxDynAny,
            fn_once::*,
        },
        mk_slot,
        mk_slots,
        stackbox,
        StackBox,
    };
}

#[doc(hidden)] /** Macro internals, not subject to semver rules */ pub
mod __ {
    pub use ::core::{
        marker::Sized,
        mem::ManuallyDrop,
    };

    pub trait GetVTable {
        type VTable;
    }
    pub use ::core::{
        concat,
        marker::{PhantomData, Send, Sync},
        mem::transmute,
        ops::Drop,
    };
    pub use ::paste::paste;
    pub use crate::{
        marker::{Sendness::T as Sendness, Syncness::T as Syncness, NoAutoTraits},
        dyn_traits::__::DynCoerce,
    };
    mod ty { pub struct Erased(()); }
    pub type ErasedPtr = ::core::ptr::NonNull<ty::Erased>;

    pub
    unsafe fn drop_in_place<T> (ptr: ErasedPtr)
    {
        ::core::ptr::drop_in_place::<T>(ptr.cast::<T>().as_ptr());
    }
}