Struct Option

pub struct Option<Element: MoveType> {
    pub vec: MoveVec<Element>,
}

Abstraction of a value that may or may not be present. Implemented with a vector of size zero or one because Move bytecode does not have ADTs.

Fields

vec: MoveVec<Element>

Implementations

impl<Element: MoveType> Option<Element>

pub fn new(vec: MoveVec<Element>) -> Self

Constructs a new Option.

impl<Element: MoveType> Option<Element>

pub fn move_instance( self, element: <Element as MoveType>::TypeTag, ) -> MoveInstance<Self>

pub fn type_(element: <Element as MoveType>::TypeTag) -> OptionTypeTag<Element>

Trait Implementations

impl<Element: Clone + MoveType> Clone for Option<Element>

fn clone(&self) -> Option<Element>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Element: Debug + MoveType> Debug for Option<Element>

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

Formats the value using the given formatter.

impl<'de, Element: MoveType> Deserialize<'de> for Option<Element>

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<Element: MoveType> Display for Option<Element>

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

Formats the value using the given formatter.

impl<Element: Hash + MoveType> Hash for Option<Element>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<Element: MoveType> MoveStruct for Option<Element>

type StructTag = OptionTypeTag<Element>

impl<Element: MoveType> MoveType for Option<Element>

type TypeTag = OptionTypeTag<Element>

fn from_bcs(bytes: &[u8]) -> Result<Self, Error>

Deserialize the contents of the Move type from BCS bytes.

fn into_bcs(self) -> Result<Vec<u8>, Error>

Consuming version of to_bcs.

fn to_bcs(&self) -> Result<Vec<u8>, Error>

Serialize the contents of the Move type to BCS bytes.

fn into_json(self) -> Value

Consuming version of to_json.

fn to_json(&self) -> Value

Serialize the contents of the Move type to JSON.

impl<Element: PartialEq + MoveType> PartialEq for Option<Element>

fn eq(&self, other: &Option<Element>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<Element> Serialize for Option<Element>

where Element: Serialize + MoveType,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<Element: MoveType> StaticAddress for Option<Element>

fn address() -> Address

impl<Element: MoveType> StaticModule for Option<Element>

fn module() -> Identifier

impl<Element: MoveType> StaticName for Option<Element>

fn name() -> Identifier

impl<Element: MoveType + StaticTypeTag> StaticTypeParams for Option<Element>

fn type_params() -> Vec<TypeTag>

impl<Element: MoveType> Tabled for Option<Element>

const LENGTH: usize = 1usize

A length of fields and headers, which must be the same.

fn fields(&self) -> Vec<Cow<'_, str>>

Fields method must return a list of cells.

fn headers() -> Vec<Cow<'static, str>>

Headers must return a list of column names.

impl<Element: Eq + MoveType> Eq for Option<Element>

impl<Element: MoveType> StructuralPartialEq for Option<Element>