Enum tc_scalar::Scalar

pub enum Scalar {
    Cluster(ClusterRef),
    Map(Map<Self>),
    Op(OpDef),
    Range((Bound<Value>, Bound<Value>)),
    Ref(Box<TCRef>),
    Tuple(Tuple<Self>),
    Value(Value),
}

A scalar value, i.e. an immutable state always held in main memory and never split into blocks.

Variants

Cluster(ClusterRef)

Map(Map<Self>)

Op(OpDef)

Range((Bound<Value>, Bound<Value>))

Ref(Box<TCRef>)

Tuple(Tuple<Self>)

Value(Value)

Implementations

impl Scalar

pub fn is_map(&self) -> bool

Return true if this Scalar variant is a Map.

pub fn is_none(&self) -> bool

Return true if self is an empty tuple, default link, or Value::None.

pub fn is_tuple(&self) -> bool

Return true if this Scalar variant is a Tuple.

pub fn into_type(self, class: ScalarType) -> Option<Self>

Cast this Scalar into the specified ScalarType, if possible.

Trait Implementations

impl AsType<(Bound<Value>, Bound<Value>)> for Scalar

fn as_type(&self) -> Option<&(Bound<Value>, Bound<Value>)>

Borrow this instance as an instance of T if possible.

fn as_type_mut(&mut self) -> Option<&mut (Bound<Value>, Bound<Value>)>

Borrow this instance mutably as an instance of T if possible.

fn into_type(self) -> Option<(Bound<Value>, Bound<Value>)>

Convert this instance into an instance of T if possible.

impl AsType<Box<TCRef>> for Scalar

fn as_type(&self) -> Option<&Box<TCRef>>

Borrow this instance as an instance of T if possible.

fn as_type_mut(&mut self) -> Option<&mut Box<TCRef>>

Borrow this instance mutably as an instance of T if possible.

fn into_type(self) -> Option<Box<TCRef>>

Convert this instance into an instance of T if possible.

impl AsType<ClusterRef> for Scalar

fn as_type(&self) -> Option<&ClusterRef>

Borrow this instance as an instance of T if possible.

fn as_type_mut(&mut self) -> Option<&mut ClusterRef>

Borrow this instance mutably as an instance of T if possible.

fn into_type(self) -> Option<ClusterRef>

Convert this instance into an instance of T if possible.

impl AsType<Map<Scalar>> for Scalar

fn as_type(&self) -> Option<&Map<Scalar>>

Borrow this instance as an instance of T if possible.

fn as_type_mut(&mut self) -> Option<&mut Map<Scalar>>

Borrow this instance mutably as an instance of T if possible.

fn into_type(self) -> Option<Map<Scalar>>

Convert this instance into an instance of T if possible.

impl AsType<OpDef> for Scalar

fn as_type(&self) -> Option<&OpDef>

Borrow this instance as an instance of T if possible.

fn as_type_mut(&mut self) -> Option<&mut OpDef>

Borrow this instance mutably as an instance of T if possible.

fn into_type(self) -> Option<OpDef>

Convert this instance into an instance of T if possible.

impl AsType<Tuple<Scalar>> for Scalar

fn as_type(&self) -> Option<&Tuple<Scalar>>

Borrow this instance as an instance of T if possible.

fn as_type_mut(&mut self) -> Option<&mut Tuple<Scalar>>

Borrow this instance mutably as an instance of T if possible.

fn into_type(self) -> Option<Tuple<Scalar>>

Convert this instance into an instance of T if possible.

impl AsType<Value> for Scalar

fn as_type(&self) -> Option<&Value>

Borrow this instance as an instance of T if possible.

fn as_type_mut(&mut self) -> Option<&mut Value>

Borrow this instance mutably as an instance of T if possible.

fn into_type(self) -> Option<Value>

Convert this instance into an instance of T if possible.

impl Clone for Scalar

fn clone(&self) -> Scalar

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Scalar

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

Formats the value using the given formatter.

impl Default for Scalar

fn default() -> Self

Returns the “default value” for a type.

impl From<(Bound<Value>, Bound<Value>)> for Scalar

fn from(t: (Bound<Value>, Bound<Value>)) -> Self

Converts to this type from the input type.

impl From<Box<TCRef>> for Scalar

fn from(t: Box<TCRef>) -> Self

Converts to this type from the input type.

impl From<ClusterRef> for Scalar

fn from(t: ClusterRef) -> Self

Converts to this type from the input type.

impl From<Host> for Scalar

fn from(host: Host) -> Self

Converts to this type from the input type.

impl From<Id> for Scalar

fn from(id: Id) -> Self

Converts to this type from the input type.

impl From<IdRef> for Scalar

fn from(id_ref: IdRef) -> Self

Converts to this type from the input type.

impl From<Link> for Scalar

fn from(link: Link) -> Self

Converts to this type from the input type.

impl From<Map<Scalar>> for Scalar

fn from(t: Map<Scalar>) -> Self

Converts to this type from the input type.

impl From<Number> for Scalar

fn from(n: Number) -> Self

Converts to this type from the input type.

impl From<OpDef> for Scalar

fn from(t: OpDef) -> Self

Converts to this type from the input type.

impl From<OpRef> for Scalar

fn from(op_ref: OpRef) -> Self

Converts to this type from the input type.

impl From<Subject> for Scalar

fn from(subject: Subject) -> Self

Converts to this type from the input type.

impl From<PathBuf> for Scalar

fn from(path: TCPathBuf) -> Self

Converts to this type from the input type.

impl From<TCRef> for Scalar

fn from(tc_ref: TCRef) -> Self

Converts to this type from the input type.

impl From<Tuple<Scalar>> for Scalar

fn from(t: Tuple<Scalar>) -> Self

Converts to this type from the input type.

impl From<Tuple<Value>> for Scalar

fn from(tuple: Tuple<Value>) -> Self

Converts to this type from the input type.

impl From<Value> for Scalar

fn from(t: Value) -> Self

Converts to this type from the input type.

impl From<bool> for Scalar

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<i64> for Scalar

fn from(n: i64) -> Self

Converts to this type from the input type.

impl From<u64> for Scalar

fn from(n: u64) -> Self

Converts to this type from the input type.

impl From<usize> for Scalar

fn from(n: usize) -> Self

Converts to this type from the input type.

impl FromStream for Scalar

type Context = ()

The decoding context of this type, useful in situations where the stream to be decoded may be too large to hold in main memory.

fn from_stream<'life0, 'async_trait, D>( __arg0: (), d: &'life0 mut D ) -> Pin<Box<dyn Future<Output = Result<Self, D::Error>> + Send + 'async_trait>>

where D: 'async_trait + Decoder, Self: 'async_trait, 'life0: 'async_trait,

Parse this value using the given Decoder.

impl GetSize for Scalar

fn get_size(&self) -> usize

Determines the total size of the object.

fn get_stack_size() -> usize

Determines how may bytes this object occupies inside the stack.

fn get_heap_size(&self) -> usize

Determines how many bytes this object occupies inside the heap.

impl<'a, D: Digest> Hash<D> for &'a Scalar

fn hash(self) -> Output<D>

Compute the SHA-2 hash of this value

impl<D: Digest> Hash<D> for Scalar

fn hash(self) -> Output<D>

Compute the SHA-2 hash of this value

impl Instance for Scalar

type Class = ScalarType

The Class type of this instance

fn class(&self) -> ScalarType

Returns the [Class] of this instance.

impl<'en> IntoStream<'en> for Scalar

fn into_stream<E: Encoder<'en>>(self, e: E) -> Result<E::Ok, E::Error>

Take ownership of this value and serialize it into the given encoder.

impl PartialEq for Scalar

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<State> Refer<State> for Scalar

where State: StateInstance + Refer<State> + From<Scalar>, State::Closure: From<(Map<State>, OpDef)> + TryCastFrom<State>, Map<State>: TryFrom<State, Error = TCError>, Value: TryFrom<State, Error = TCError> + TryCastFrom<State>, bool: TryCastFrom<State>,

fn dereference_self(self, path: &TCPathBuf) -> Self

Replace references to “$self” with the given relative path.

fn is_conditional(&self) -> bool

Return true if this is a conditional reference (e.g. If or Case).

fn is_inter_service_write(&self, cluster_path: &[PathSegment]) -> bool

Return true if this references a write operation to a cluster other than the path given.

fn is_ref(&self) -> bool

Return true if this state is a resolvable reference.

fn reference_self(self, path: &TCPathBuf) -> Self

Replace the given relative path with “$self”.

fn requires(&self, deps: &mut HashSet<Id>)

Add the dependency [Id]s of this reference to the given set.

fn resolve<'a, 'async_trait, T>( self, context: &'a Scope<'a, State, T>, txn: &'a State::Txn ) -> Pin<Box<dyn Future<Output = TCResult<State>> + Send + 'async_trait>>

where T: 'async_trait + ToState<State> + Public<State> + Instance, Self: 'async_trait, 'a: 'async_trait,

Resolve this reference with respect to the given context.

impl<State> Route<State> for Scalar

where State: StateInstance + Refer<State> + From<Scalar> + From<Tuple<Scalar>> + From<Map<Scalar>> + From<Value> + From<Tuple<Value>> + From<Number>, Box<dyn ClosureInstance<State>>: TryCastFrom<State>, Id: TryCastFrom<State>, Map<State>: TryFrom<State, Error = TCError> + TryCastFrom<State>, Number: TryCastFrom<State>, TCString: TryCastFrom<State>, Tuple<State>: TryCastFrom<State>, Value: TryCastFrom<State>,

fn route<'a>( &'a self, path: &'a [PathSegment] ) -> Option<Box<dyn Handler<'a, State> + 'a>>

impl<'en> ToStream<'en> for Scalar

fn to_stream<E: Encoder<'en>>(&'en self, e: E) -> Result<E::Ok, E::Error>

Serialize this value into the given encoder.

impl TryCastFrom<Scalar> for (Bound<Value>, Bound<Value>)

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl<T: TryCastFrom<Scalar>> TryCastFrom<Scalar> for (T,)

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl<T1: TryCastFrom<Scalar>, T2: TryCastFrom<Scalar>> TryCastFrom<Scalar> for (T1, T2)

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl<T1: TryCastFrom<Scalar>, T2: TryCastFrom<Scalar>, T3: TryCastFrom<Scalar>> TryCastFrom<Scalar> for (T1, T2, T3)

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for After

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Bytes

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Case

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Float

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Host

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Id

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for IdRef

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for IfRef

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Link

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl<T: Clone + TryCastFrom<Scalar>> TryCastFrom<Scalar> for Map<T>

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Number

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for OpDef

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for OpRef

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl<const N: usize, T> TryCastFrom<Scalar> for SmallVec<[T; N]>

where T: TryCastFrom<Scalar>, [T; N]: Array<Item = T>,

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Subject

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for TCPathBuf

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for TCRef

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for TCString

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Tuple<Scalar>

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Tuple<Value>

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for Value

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl<T: TryCastFrom<Scalar>> TryCastFrom<Scalar> for Vec<T>

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for While

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for With

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for bool

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for u64

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl TryCastFrom<Scalar> for usize

fn can_cast_from(scalar: &Scalar) -> bool

Test if value can be cast into Self.

fn opt_cast_from(scalar: Scalar) -> Option<Self>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err>

where OnErr: FnOnce(&T) -> Err,

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.

impl<T: TryFrom<Scalar>> TryFrom<Scalar> for (Id, T)

where TCError: From<T::Error>,

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(scalar: Scalar) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Scalar> for Id

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(scalar: Scalar) -> TCResult<Self>

Performs the conversion.

impl TryFrom<Scalar> for Map<Scalar>

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(scalar: Scalar) -> TCResult<Map<Scalar>>

Performs the conversion.

impl TryFrom<Scalar> for Map<Value>

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(scalar: Scalar) -> TCResult<Map<Value>>

Performs the conversion.

impl TryFrom<Scalar> for TCRef

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(scalar: Scalar) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Scalar> for Tuple<Scalar>

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(scalar: Scalar) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Scalar> for Value

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(scalar: Scalar) -> TCResult<Value>

Performs the conversion.

impl TryFrom<Scalar> for bool

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(scalar: Scalar) -> TCResult<Self>

Performs the conversion.

impl Eq for Scalar

impl StructuralPartialEq for Scalar