Struct VacantComponentEntry 

pub struct VacantComponentEntry<'w, 'a, T>
where
    T: Component,
{ /* private fields */ }

A view into a vacant entry in a EntityWorldMut. It is part of the ComponentEntry enum.

Implementations

impl<'w, 'a, T> VacantComponentEntry<'w, 'a, T>

where T: Component,

pub fn insert(self, component: T) -> OccupiedComponentEntry<'w, 'a, T>

Inserts the component into the VacantComponentEntry and returns an OccupiedComponentEntry.

Examples

#[derive(Component, Default, Clone, Copy, Debug, PartialEq)]
struct Comp(u32);

let mut entity = world.spawn_empty();

if let ComponentEntry::Vacant(v) = entity.entry::<Comp>() {
    v.insert(Comp(10));
}

assert_eq!(world.query::<&Comp>().single(&world).unwrap().0, 10);