Struct concordium_std::VacantEntryRaw
source · [−]pub struct VacantEntryRaw<S> { /* private fields */ }Expand description
A view into a vacant entry in a HasStateApi type.
It is part of the EntryRaw enum.
Differs from VacantEntry in that this has access to the raw bytes stored
in the state via a HasStateEntry type.
Implementations
sourceimpl<StateApi: HasStateApi> VacantEntryRaw<StateApi>
impl<StateApi: HasStateApi> VacantEntryRaw<StateApi>
sourcepub fn key(&self) -> &[u8]ⓘNotable traits for &mut [u8]impl Write for &mut [u8]impl Read for &[u8]
pub fn key(&self) -> &[u8]ⓘNotable traits for &mut [u8]impl Write for &mut [u8]impl Read for &[u8]
Gets a reference to the key that would be used when inserting a value
through the VacantEntryRaw.
sourcepub fn insert_raw(self, value: &[u8]) -> Result<StateApi::EntryType, StateError>
pub fn insert_raw(self, value: &[u8]) -> Result<StateApi::EntryType, StateError>
Sets the value of the entry with the VacantEntryRaw’s key.
sourcepub fn insert<V: Serial>(
self,
value: &V
) -> Result<StateApi::EntryType, StateError>
pub fn insert<V: Serial>(
self,
value: &V
) -> Result<StateApi::EntryType, StateError>
Sets the value of the entry with the VacantEntryRaw’s key.
This differs from
insert_raw in that it automatically serializes
the provided value. insert should be preferred
for values that can be directly converted to byte arrays, e.g., any
value that implements AsRef<[u8]>.
Auto Trait Implementations
impl<S> RefUnwindSafe for VacantEntryRaw<S> where
S: RefUnwindSafe,
impl<S> Send for VacantEntryRaw<S> where
S: Send,
impl<S> Sync for VacantEntryRaw<S> where
S: Sync,
impl<S> Unpin for VacantEntryRaw<S> where
S: Unpin,
impl<S> UnwindSafe for VacantEntryRaw<S> where
S: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more