Struct bevy_utils::EntityHasher
source · pub struct EntityHasher { /* private fields */ }
Expand description
A very fast hash that is only designed to work on generational indices
like Entity
. It will panic if attempting to hash a type containing
non-u64 fields.
This is heavily optimized for typical cases, where you have mostly live entities, and works particularly well for contiguous indices.
If you have an unusual case – say all your indices are multiples of 256
or most of the entities are dead generations – then you might want also to
try AHasher
for a slower hash computation but fewer lookup conflicts.
Trait Implementations§
source§impl Debug for EntityHasher
impl Debug for EntityHasher
source§impl Default for EntityHasher
impl Default for EntityHasher
source§fn default() -> EntityHasher
fn default() -> EntityHasher
Returns the “default value” for a type. Read more
source§impl Hasher for EntityHasher
impl Hasher for EntityHasher
1.26.0 · source§fn write_u128(&mut self, i: u128)
fn write_u128(&mut self, i: u128)
Writes a single
u128
into this hasher.1.3.0 · source§fn write_usize(&mut self, i: usize)
fn write_usize(&mut self, i: usize)
Writes a single
usize
into this hasher.1.26.0 · source§fn write_i128(&mut self, i: i128)
fn write_i128(&mut self, i: i128)
Writes a single
i128
into this hasher.1.3.0 · source§fn write_isize(&mut self, i: isize)
fn write_isize(&mut self, i: isize)
Writes a single
isize
into this hasher.source§fn write_length_prefix(&mut self, len: usize)
fn write_length_prefix(&mut self, len: usize)
🔬This is a nightly-only experimental API. (
hasher_prefixfree_extras
)Writes a length prefix into this hasher, as part of being prefix-free. Read more
Auto Trait Implementations§
impl Freeze for EntityHasher
impl RefUnwindSafe for EntityHasher
impl Send for EntityHasher
impl Sync for EntityHasher
impl Unpin for EntityHasher
impl UnwindSafe for EntityHasher
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more