template.rs

#![no_std]
//#![no_implicit_prelude]

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

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

mod alloc {
    #[cfg(not(feature = "std"))]
    extern crate alloc;

    #[cfg(not(feature = "std"))]
    pub use alloc::boxed::Box;

    #[cfg(feature = "std")]
    pub use std::boxed::Box;
}
use {
    ::core,
};

//#[macro_use]
pub mod debug {
    #[macro_export]
    macro_rules! dbg {
        ($($input:tt)*) => {{
            #[cfg(all(debug_assertions, feature = "std"))]
            {
                ::std::dbg!($($input)*)
            }

            #[cfg(not(debug_assertions))]
            {
                $($input)*
            }
        }}
    }

    #[macro_use]
    pub use crate::dbg;
}

#[cfg_attr(docs_rs, doc(cfg(feature = "alloc")))]
fn swap<T>(a: &'_ mut T, b: &'_ mut T)
    -> ()
where
    T: Copy
{
    ::core::mem::swap(a, b)
}