Struct Metadata

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pub struct Metadata(/* private fields */);

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impl Metadata

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pub fn add_value( &mut self, ty: MetaType, meta: MetaValue, ) -> Result<(), MetadataError>

Methods from Deref<Target = Confined<BTreeMap<MetaType, MetaValue>, amplify::::collection::confinement::TinyOrdMap::{constant#0}, amplify::::collection::confinement::TinyOrdMap::{constant#1}>>§

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pub fn iter_mut(&'c mut self) -> <&'c mut C as IntoIterator>::IntoIter

Returns an iterator that allows modifying each value.

The iterator yields all items from start to end.

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pub fn values_mut( &mut self, ) -> impl Iterator<Item = &mut <C as KeyedCollection>::Value>

Returns an iterator that allows modifying each value for each key.

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pub fn keyed_values_mut( &mut self, ) -> impl Iterator<Item = (&<C as KeyedCollection>::Key, &mut <C as KeyedCollection>::Value)>

Returns an iterator that allows modifying each value for each key.

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pub fn as_inner(&self) -> &C

👎Deprecated since 4.7.0: use as_unconfined method

Returns inner collection type

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pub fn as_unconfined(&self) -> &C

Returns reference to the inner collection type.

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pub fn to_inner(&self) -> C
where C: Clone,

👎Deprecated since 4.7.0: use to_unconfined method

Clones inner collection type and returns it

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pub fn to_unconfined(&self) -> C
where C: Clone,

Clones inner collection and returns an unconfined version of it.

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pub fn push(&mut self, elem: <C as Collection>::Item) -> Result<(), Error>

Attempts to add a single element to the confined collection. Fails if the number of elements in the collection already maximal.

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pub fn extend<T>(&mut self, iter: T) -> Result<(), Error>
where T: IntoIterator<Item = <C as Collection>::Item>,

Attempts to add all elements from an iterator to the confined collection. Fails if the number of elements in the collection already maximal.

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pub fn clear(&mut self)

Removes all elements from the confined collection.

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pub fn len_u8(&self) -> u8

Returns number of elements in the confined collection as u8. The confinement guarantees that the collection length can’t exceed u8::MAX.

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pub fn len_u16(&self) -> u16

Returns number of elements in the confined collection as u16. The confinement guarantees that the collection length can’t exceed u16::MAX.

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pub fn len_u24(&self) -> u24

Returns number of elements in the confined collection as u24. The confinement guarantees that the collection length can’t exceed u24::MAX.

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pub fn len_u32(&self) -> u32

Returns number of elements in the confined collection as u32. The confinement guarantees that the collection length can’t exceed u32::MAX.

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pub fn get_mut( &mut self, key: &<C as KeyedCollection>::Key, ) -> Option<&mut <C as KeyedCollection>::Value>

Gets mutable reference to an element of the collection.

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pub fn insert( &mut self, key: <C as KeyedCollection>::Key, value: <C as KeyedCollection>::Value, ) -> Result<Option<<C as KeyedCollection>::Value>, Error>

Inserts a new value into the confined collection under a given key. Fails if the collection already contains maximum number of elements allowed by the confinement.

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pub fn entry( &mut self, key: <C as KeyedCollection>::Key, ) -> Result<<C as KeyedCollection>::Entry<'_>, Error>

Gets the given key’s corresponding entry in the map for in-place manipulation. Errors if the collection entry is vacant and the collection has already reached maximal size of its confinement.

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pub fn remove(&mut self, key: &K) -> Result<Option<V>, Error>

Removes an element from the map. Errors if the index exceeds the number of elements in the map, of if the new collection length will be less than the confinement requirement. Returns the removed value otherwise.