Macro zng_hot_entry 

macro_rules! zng_hot_entry {
    () => { ... };
}

Declare the dynamic library hot reload entry.

This must be called at the root (src/lib.rs) of the library that will hot reload. See the module level documentation for more details.

Declare hot reload entry.

Must be called at the root of the crate.

Safety

Must be called only once at the hot-reload crate.