Struct Query 

pub struct Query<'a, const LOCKING: bool, Fetch: TypedQueryFetch<'a, LOCKING>>(/* private fields */);

Implementations

impl<'a, const LOCKING: bool, Fetch: TypedQueryFetch<'a, LOCKING>> Query<'a, LOCKING, Fetch>

pub fn query(&self, world: &'a World) -> TypedQueryIter<'a, LOCKING, Fetch>

pub fn query_view( &self, view: &'a WorldView, ) -> TypedQueryIter<'a, LOCKING, Fetch>

Trait Implementations

impl<'a, const LOCKING: bool, Fetch: TypedQueryFetch<'a, LOCKING>> Clone for Query<'a, LOCKING, Fetch>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, const LOCKING: bool, Fetch: TypedQueryFetch<'a, LOCKING>> Default for Query<'a, LOCKING, Fetch>

fn default() -> Self

Returns the “default value” for a type.

impl<'a, const LOCKING: bool, Fetch: TypedQueryFetch<'a, LOCKING>> TypedLookupFetch<'a, LOCKING> for Query<'a, LOCKING, Fetch>

type Value = ()

type ValueOne = <Query<'a, LOCKING, Fetch> as TypedLookupFetch<'a, LOCKING>>::Value

type Access = ()

fn try_access(archetype: &'a Archetype) -> Option<Self::Access>

fn fetch(_: &mut Self::Access, _: Entity) -> Option<Self::Value>

fn fetch_one(_: &World, _: Entity) -> Option<Self::ValueOne>

fn unique_access(output: &mut HashSet<TypeHash>)

impl<'a, const LOCKING: bool, Fetch: TypedQueryFetch<'a, LOCKING>> TypedQueryFetch<'a, LOCKING> for Query<'a, LOCKING, Fetch>

type Value = ()

type Access = ()

fn does_accept_archetype(archetype: &Archetype) -> bool

fn access(_: &Archetype) -> Result<Self::Access, QueryError>

fn fetch(_: &mut Self::Access) -> Option<Self::Value>

fn unique_access(output: &mut HashSet<TypeHash>)

impl<'a, const LOCKING: bool, Fetch: TypedQueryFetch<'a, LOCKING>> UniverseFetch<'a> for Query<'a, LOCKING, Fetch>

type Value = Query<'a, LOCKING, Fetch>

fn fetch(_: &Universe, _: Entity) -> Result<Self::Value, Box<dyn Error>>

impl<'a, const LOCKING: bool, Fetch: TypedQueryFetch<'a, LOCKING>> Copy for Query<'a, LOCKING, Fetch>