Struct ManagedVec

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pub struct ManagedVec<M, T>where
    M: ManagedTypeApi,
    T: ManagedVecItem,
{ /* private fields */ }

Expand description

A list of items that lives inside a managed buffer. Items can be either stored there in full (e.g. u32), or just via handle (e.g. BigUint<M>).

Implementations§

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impl<M> ManagedVec<M, EsdtTokenPayment<M>>
where M: ManagedTypeApi,

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pub fn as_multi_egld_or_esdt_payment( &self, ) -> &ManagedVec<M, EgldOrEsdtTokenPayment<M>>

Zero-cost conversion that loosens the EGLD restriction.

It is always safe to do, since the 2 types are guaranteed to have the same layout.

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pub fn into_multi_egld_or_esdt_payment( self, ) -> ManagedVec<M, EgldOrEsdtTokenPayment<M>>

Zero-cost conversion that loosens the EGLD restriction.

It is always safe to do, since the 2 types are guaranteed to have the same layout.

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pub fn byte_len(&self) -> usize

Length of the underlying buffer in bytes.

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pub fn len(&self) -> usize

Number of items.

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pub fn is_empty(&self) -> bool

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pub fn try_get(&self, index: usize) -> Option<<T as ManagedVecItem>::Ref<'_>>

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pub fn to_array_of_refs<const N: usize>( &self, ) -> Option<[<T as ManagedVecItem>::Ref<'_>; N]>

Extracts all elements to an array, if the length matches exactly.

The resulting array contains mere references to the items, as defined in ManagedVecItem.

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pub fn get(&self, index: usize) -> <T as ManagedVecItem>::Ref<'_>

Retrieves element at index, if the index is valid. Otherwise, signals an error and terminates execution.

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pub fn is_single_item(&self) -> Option<<T as ManagedVecItem>::Ref<'_>>

If it contains precisely one item, will return Some with a reference to that item.

Will return None for zero or more than one item.

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pub fn get_mut(&mut self, index: usize) -> ManagedVecRefMut<'_, M, T>

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pub fn set(&mut self, index: usize, item: T) -> Result<(), InvalidSliceError>

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pub fn slice( &self, start_index: usize, end_index: usize, ) -> Option<ManagedVec<M, T>>

Returns a new ManagedVec, containing the [start_index, end_index) range of elements. Returns None if any index is out of range

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pub fn push(&mut self, item: T)

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pub fn remove(&mut self, index: usize)

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pub fn take(&mut self, index: usize) -> T

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pub fn from_single_item(item: T) -> ManagedVec<M, T>

New ManagedVec instance with 1 element in it.

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pub fn overwrite_with_single_item(&mut self, item: T)

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pub fn append_vec(&mut self, item: ManagedVec<M, T>)

Appends all the contents of another managed vec at the end of the current one. Consumes the other vec in the process.

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pub fn clear(&mut self)

Removes all items while retaining the handle.

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pub fn into_vec(self) -> Vec<T>

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pub fn with_self_as_vec<R, F>(&mut self, f: F) -> R
where F: FnOnce(&mut Vec<T>) -> R,

Temporarily converts self to a Vec<T>. All operations performed on the temporary vector get saved back to the underlying buffer.

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pub fn iter(&self) -> ManagedVecRefIterator<'_, M, T> ⓘ

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pub fn as_multi(&self) -> &MultiValueManagedVec<M, T>

Creates a reference to and identical object, but one which behaves like a multi-value-vec.

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impl<M, T> ManagedVec<M, T>
where M: ManagedTypeApi, T: ManagedVecItem + Ord + Debug,

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pub fn sort(&mut self)

👎Deprecated since 0.54.5: Please use method sort_unstable instead.

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pub fn sort_by<F>(&mut self, compare: F)
where F: FnMut(&T, &T) -> Ordering,

👎Deprecated since 0.54.5: Please use method sort_unstable_by instead.

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pub fn sort_by_key<K, F>(&mut self, f: F)
where F: FnMut(&T) -> K, K: Ord,

👎Deprecated since 0.54.5: Please use method sort_unstable_by_key instead.

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pub fn sort_by_cached_key<K, F>(&mut self, f: F)
where F: FnMut(&T) -> K, K: Ord,

👎Deprecated

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pub fn sort_unstable(&mut self)

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pub fn sort_unstable_by<F>(&mut self, compare: F)
where F: FnMut(&T, &T) -> Ordering,

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pub fn sort_unstable_by_key<K, F>(&mut self, f: F)
where F: FnMut(&T) -> K, K: Ord,

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pub fn is_sorted(&self) -> bool

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impl<M, T> ManagedVec<M, T>
where M: ManagedTypeApi, T: ManagedVecItem + PartialEq + Debug,

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pub fn dedup(&mut self)

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impl<M, T> ManagedVec<M, T>
where M: ManagedTypeApi, T: ManagedVecItem + PartialEq,

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pub fn find(&self, item: &T) -> Option<usize>

This can be very costly for big collections. It needs to deserialize and compare every single item in the worst case.

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pub fn contains(&self, item: &T) -> bool

This can be very costly for big collections. It needs to iterate, deserialize, and compare every single item in the worst case.

Trait Implementations§

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impl<M, T> Clone for ManagedVec<M, T>
where M: ManagedTypeApi, T: ManagedVecItem + Clone,

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fn clone(&self) -> ManagedVec<M, T>

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl<M, T> Debug for ManagedVec<M, T>
where M: ManagedTypeApi, T: ManagedVecItem + Debug + Clone,

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

Formats the value using the given formatter. Read more

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impl<M, T> Default for ManagedVec<M, T>
where M: ManagedTypeApi, T: ManagedVecItem,

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fn default() -> ManagedVec<M, T>

Returns the “default value” for a type. Read more

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impl<M, V> Extend<V> for ManagedVec<M, V>
where M: ManagedTypeApi, V: ManagedVecItem,

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fn extend<T>(&mut self, iter: T)
where T: IntoIterator<Item = V>,

Extends a collection with the contents of an iterator. Read more

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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements. Read more

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