pub struct UniqueIdMapper<SA, A = CurrentStorage>where
SA: StorageMapperApi,
A: StorageAddress<SA>,{ /* private fields */ }
Expand description
Holds the values from 1 to N with as little storage interaction as possible If Mapper[i] = i, then it stores nothing, i.e. “0” If Mapper[i] is equal to another value, then it stores the value
Implementations§
Source§impl<SA, A> UniqueIdMapper<SA, A>where
SA: StorageMapperApi,
A: StorageAddress<SA>,
impl<SA, A> UniqueIdMapper<SA, A>where
SA: StorageMapperApi,
A: StorageAddress<SA>,
Source§impl<SA> UniqueIdMapper<SA, CurrentStorage>where
SA: StorageMapperApi,
impl<SA> UniqueIdMapper<SA, CurrentStorage>where
SA: StorageMapperApi,
Sourcepub fn set_initial_len(&mut self, len: usize)
pub fn set_initial_len(&mut self, len: usize)
Initializes the mapper’s length. This may not be set again afterwards.
Sourcepub fn swap_remove(&mut self, index: usize) -> UniqueId
pub fn swap_remove(&mut self, index: usize) -> UniqueId
Gets the value from the index and removes it. The value is replaced by the last item, and length is decremented.
Trait Implementations§
Source§impl<'a, SA, A> IntoIterator for &'a UniqueIdMapper<SA, A>where
SA: StorageMapperApi,
A: StorageAddress<SA>,
impl<'a, SA, A> IntoIterator for &'a UniqueIdMapper<SA, A>where
SA: StorageMapperApi,
A: StorageAddress<SA>,
Source§impl<SA> StorageMapper<SA> for UniqueIdMapper<SA, CurrentStorage>where
SA: StorageMapperApi,
impl<SA> StorageMapper<SA> for UniqueIdMapper<SA, CurrentStorage>where
SA: StorageMapperApi,
Source§fn new(base_key: StorageKey<SA>) -> Self
fn new(base_key: StorageKey<SA>) -> Self
Will be called automatically by the
#[storage_mapper]
annotation generated code.Source§impl<SA> StorageMapperFromAddress<SA> for UniqueIdMapper<SA, ManagedAddress<SA>>where
SA: StorageMapperApi,
impl<SA> StorageMapperFromAddress<SA> for UniqueIdMapper<SA, ManagedAddress<SA>>where
SA: StorageMapperApi,
Source§fn new_from_address(
address: ManagedAddress<SA>,
base_key: StorageKey<SA>,
) -> Self
fn new_from_address( address: ManagedAddress<SA>, base_key: StorageKey<SA>, ) -> Self
Will be called automatically by the
#[storage_mapper_from_address]
annotation generated code.Source§impl<SA> TopEncodeMulti for UniqueIdMapper<SA, CurrentStorage>where
SA: StorageMapperApi,
Behaves like a MultiResultVec when an endpoint result.
impl<SA> TopEncodeMulti for UniqueIdMapper<SA, CurrentStorage>where
SA: StorageMapperApi,
Behaves like a MultiResultVec when an endpoint result.
Source§fn multi_encode_or_handle_err<O, H>(
&self,
output: &mut O,
h: H,
) -> Result<(), H::HandledErr>where
O: TopEncodeMultiOutput,
H: EncodeErrorHandler,
fn multi_encode_or_handle_err<O, H>(
&self,
output: &mut O,
h: H,
) -> Result<(), H::HandledErr>where
O: TopEncodeMultiOutput,
H: EncodeErrorHandler,
Version of
top_encode
that can handle errors as soon as they occur.
For instance in can exit immediately and make sure that if it returns, it is a success.
By not deferring error handling, this can lead to somewhat smaller bytecode.Source§fn multi_encode<O>(&self, output: &mut O) -> Result<(), EncodeError>where
O: TopEncodeMultiOutput,
fn multi_encode<O>(&self, output: &mut O) -> Result<(), EncodeError>where
O: TopEncodeMultiOutput,
Attempt to serialize the value to ouput.
Source§impl<SA> TypeAbi for UniqueIdMapper<SA, CurrentStorage>where
SA: StorageMapperApi,
Behaves like a MultiResultVec when an endpoint result.
impl<SA> TypeAbi for UniqueIdMapper<SA, CurrentStorage>where
SA: StorageMapperApi,
Behaves like a MultiResultVec when an endpoint result.
type Unmanaged = UniqueIdMapper<SA>
fn type_name() -> TypeName
fn type_name_rust() -> TypeName
Source§fn provide_type_descriptions<TDC: TypeDescriptionContainer>(
accumulator: &mut TDC,
)
fn provide_type_descriptions<TDC: TypeDescriptionContainer>( accumulator: &mut TDC, )
A type can provide more than its own name.
For instance, a struct can also provide the descriptions of the type of its fields.
TypeAbi doesn’t care for the exact accumulator type,
which is abstracted by the TypeDescriptionContainer trait.
fn type_names() -> TypeNames
impl<SA> TypeAbiFrom<UniqueIdMapper<SA>> for MultiValueEncoded<SA, usize>where
SA: StorageMapperApi,
impl<SA> TypeAbiFrom<UniqueIdMapper<SA>> for UniqueIdMapper<SA, CurrentStorage>where
SA: StorageMapperApi,
Auto Trait Implementations§
impl<SA, A> Freeze for UniqueIdMapper<SA, A>
impl<SA, A> RefUnwindSafe for UniqueIdMapper<SA, A>where
A: RefUnwindSafe,
<SA as HandleTypeInfo>::ManagedBufferHandle: RefUnwindSafe,
SA: RefUnwindSafe,
impl<SA, A> Send for UniqueIdMapper<SA, A>
impl<SA, A> Sync for UniqueIdMapper<SA, A>
impl<SA, A> Unpin for UniqueIdMapper<SA, A>
impl<SA, A> UnwindSafe for UniqueIdMapper<SA, A>
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