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MapEntries

Struct MapEntries 

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pub struct MapEntries<'a> { /* private fields */ }
Available on crate feature cbor only.
Expand description

A deterministic CBOR map stored as key/value slots, supporting efficient key-based extraction without rebuilding tree maps.

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impl<'a> MapEntries<'a>

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pub fn new(entries: Vec<(i64, &'a [u8])>) -> Self

Creates from entries that are already in CBOR deterministic key order (as validated by decode_map_entries_slices_notrail). Skips re-sorting.

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pub fn take(&mut self, key: i64) -> Option<&'a [u8]>

Removes and returns the raw value stored under the key, if still present.

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pub fn is_empty(&self) -> bool

Reports whether every entry has been claimed.

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pub fn contains(&self, key: i64) -> bool

Reports whether an unclaimed value is stored under the key.

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pub fn remaining_keys(&self) -> Vec<i64>

Lists the keys whose values have not been claimed yet.

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impl<'a> Clone for MapEntries<'a>

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<'a> Debug for MapEntries<'a>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'a> Eq for MapEntries<'a>

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impl<'a> MapEntryAccess<'a> for MapEntries<'a>

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fn take(&mut self, key: i64) -> Option<&'a [u8]>

Removes and returns the raw value stored under the key, if still present.
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fn contains(&self, key: i64) -> bool

Reports whether an unclaimed value is stored under the key.
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fn is_empty(&self) -> bool

Reports whether every entry has been claimed.
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fn remaining_keys(&self) -> Vec<i64>

Lists the keys whose values have not been claimed yet.
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impl<'a> PartialEq for MapEntries<'a>

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl<'a> StructuralPartialEq for MapEntries<'a>

Auto Trait Implementations§

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impl<'a> Freeze for MapEntries<'a>

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impl<'a> RefUnwindSafe for MapEntries<'a>

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impl<'a> Send for MapEntries<'a>

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impl<'a> Sync for MapEntries<'a>

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impl<'a> Unpin for MapEntries<'a>

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impl<'a> UnsafeUnpin for MapEntries<'a>

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impl<'a> UnwindSafe for MapEntries<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V