type_name_of.rs

#[macro_export]
macro_rules! type_name_of {
    ( $e:expr $(,)? ) => ({
        fn __helper__<T> (_: [&T; 0]) -> &'static str {
            core::any::type_name::<T>()
        }
        let it = [];
        #[allow(unreachable_code)] {
            if false {
                loop {}
                (&mut { it })[0] = &$e
            }
        }
        __helper__(it)
    })
} pub use type_name_of;