pub fn add_system(&mut self, name: &'static str, system: impl System + 'static) -> &mut Self {
        self.systems
            .write
            .push(SystemHandle::new(name, Box::new(system)));

        self
    }
// Adds a system to the world with mutable access to both the world and its parent struct.
// Systems run once per server tick and run in the order they were added.
Adds a system to the world with mutable access to both the world and its parent struct.
Systems run once per server tick and run in the order they were added.
Adds a system to the world with mutable access to both the world and its parent struct . Systems run once per server tick and run in the order they were added .
pub fn add_system(&mut self, name: &'static str, system: impl System + 'static) -> &mut Self {
        self.systems
            .write
            .push(SystemHandle::new(name, Box::new(system)));
        self
    }
pub fn add_system ( & mut self , name : & ' static str , system : impl System + ' static ) -> & mut Self { self . systems . write . push ( SystemHandle :: new ( name , Box :: new ( system ) ) ) ; self }
Adds a system to the world with mutable access to both the world and its parent struct.
Adds a system to the world with mutable access to both the world and its parent struct .
&mut self
name
&'static str
system
impl System + 'static
&mut self
name
&'static str
system
impl System + 'static