Enum Value

pub enum Value {
    Bytes(Arc<[u8]>),
    Email(Arc<EmailAddress>),
    Link(Link),
    Id(Id),
    None,
    Number(Number),
    String(TCString),
    Tuple(Tuple<Self>),
    Version(Version),
}

A generic value enum

Variants

Bytes(Arc<[u8]>)

Email(Arc<EmailAddress>)

Link(Link)

Id(Id)

None

Number(Number)

String(TCString)

Tuple(Tuple<Self>)

Version(Version)

Implementations

impl Value

pub fn expect_none(&self) -> TCResult<()>

Return a TCError if this Value is not none.

pub fn is_none(&self) -> bool

Return true if this Value is a default Link, Value::None, or empty Tuple.

pub fn is_some(&self) -> bool

Return true if this value is not a default Link, Value::None, or empty Tuple.

pub fn is_tuple(&self) -> bool

Return true if this Value variant is a Tuple.

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

Trait Implementations

impl AsType<Arc<[u8]>> for Value

fn as_type(&self) -> Option<&Arc<[u8]>>

Borrow this instance as an instance of T if possible.

fn as_type_mut(&mut self) -> Option<&mut Arc<[u8]>>

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

fn into_type(self) -> Option<Arc<[u8]>>

Convert this instance into an instance of T if possible.

impl AsType<Arc<EmailAddress>> for Value

fn as_type(&self) -> Option<&Arc<EmailAddress>>

Borrow this instance as an instance of T if possible.

fn as_type_mut(&mut self) -> Option<&mut Arc<EmailAddress>>

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

fn into_type(self) -> Option<Arc<EmailAddress>>

Convert this instance into an instance of T if possible.

impl AsType<Id> for Value

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

Borrow this instance as an instance of T if possible.

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

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

fn into_type(self) -> Option<Id>

Convert this instance into an instance of T if possible.

impl AsType<Link> for Value

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

Borrow this instance as an instance of T if possible.

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

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

fn into_type(self) -> Option<Link>

Convert this instance into an instance of T if possible.

impl AsType<Number> for Value

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

Borrow this instance as an instance of T if possible.

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

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

fn into_type(self) -> Option<Number>

Convert this instance into an instance of T if possible.

impl AsType<TCString> for Value

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

Borrow this instance as an instance of T if possible.

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

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

fn into_type(self) -> Option<TCString>

Convert this instance into an instance of T if possible.

impl AsType<Tuple<Value>> for Value

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

Borrow this instance as an instance of T if possible.

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

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

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

Convert this instance into an instance of T if possible.

impl AsType<Version> for Value

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

Borrow this instance as an instance of T if possible.

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

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

fn into_type(self) -> Option<Version>

Convert this instance into an instance of T if possible.

impl<T1: CastInto<Value>, T2: CastInto<Value>> CastFrom<(T1, T2)> for Value

fn cast_from(value: (T1, T2)) -> Self

Cast an instance of T into an instance of Self.

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Default for Value

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Value

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for Value

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

Formats the value using the given formatter.

impl<const N: usize> From<[u8; N]> for Value

fn from(bytes: [u8; N]) -> Self

Converts to this type from the input type.

impl From<()> for Value

fn from(_: ()) -> Value

Converts to this type from the input type.

impl From<Arc<[u8]>> for Value

fn from(t: Arc<[u8]>) -> Self

Converts to this type from the input type.

impl From<Arc<EmailAddress>> for Value

fn from(t: Arc<EmailAddress>) -> Self

Converts to this type from the input type.

impl From<Bytes> for Value

fn from(bytes: Bytes) -> Self

Converts to this type from the input type.

impl From<Host> for Value

fn from(host: Host) -> Self

Converts to this type from the input type.

impl From<Id> for Value

fn from(t: Id) -> Self

Converts to this type from the input type.

impl From<Link> for Value

fn from(t: Link) -> Self

Converts to this type from the input type.

impl From<Number> for Value

fn from(t: Number) -> Self

Converts to this type from the input type.

impl<T: Into<Value>> From<Option<T>> for Value

fn from(opt: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(s: String) -> Self

Converts to this type from the input type.

impl From<PathBuf> for Value

fn from(path: TCPathBuf) -> Value

Converts to this type from the input type.

impl From<TCString> for Value

fn from(t: TCString) -> Self

Converts to this type from the input type.

impl From<Tuple<Value>> for Value

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

Converts to this type from the input type.

impl From<Vec<Value>> for Value

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

Converts to this type from the input type.

impl From<Version> for Value

fn from(t: Version) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(n: i64) -> Self

Converts to this type from the input type.

impl From<u64> for Value

fn from(n: u64) -> Self

Converts to this type from the input type.

impl From<usize> for Value

fn from(n: usize) -> Self

Converts to this type from the input type.

impl<T> FromIterator<T> for Value

where Value: From<T>,

fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self

Creates a value from an iterator.

impl FromStream for Value

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>( _context: (), decoder: &'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 Value

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 Value

fn hash(self) -> Output<D>

Compute the SHA-2 hash of this value

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

fn hash(self) -> Output<D>

Compute the SHA-2 hash of this value

impl Hash for Value

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 Instance for Value

type Class = ValueType

The Class type of this instance

fn class(&self) -> ValueType

Returns the [Class] of this instance.

impl<'en> IntoStream<'en> for Value

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

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

impl PartialEq for Value

fn eq(&self, other: &Value) -> 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 Serialize for Value

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl<'en> ToStream<'en> for Value

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

Serialize this value into the given encoder.

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

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value>, T2: TryCastFrom<Value>> TryCastFrom<Value> for (T1, T2)

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value>, T2: TryCastFrom<Value>, T3: TryCastFrom<Value>> TryCastFrom<Value> for (T1, T2, T3)

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for Arc<[u8]>

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for Arc<EmailAddress>

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for Bound<Value>

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> Option<Bound<Value>>

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<Value> for Bytes

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> Option<Bytes>

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<Value> for Float

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for Host

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for Id

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for Link

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value>> TryCastFrom<Value> for Map<T>

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for Number

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for SmallVec<[T; N]>

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

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for String

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for TCPathBuf

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for TCString

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value>> TryCastFrom<Value> for Tuple<T>

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for Uuid

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for ValueType

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value>> TryCastFrom<Value> for Vec<T>

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for Version

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for bool

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for f32

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for f64

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for i16

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for i32

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for i64

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for u16

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for u32

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for u64

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for u8

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value> for usize

fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

fn opt_cast_from(value: Value) -> 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<Value>> TryFrom<Value> for (Id, T)

where TCError: From<T::Error>,

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> TCResult<Self>

Performs the conversion.

impl TryFrom<Value> for Arc<[u8]>

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for Id

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> TCResult<Self>

Performs the conversion.

impl TryFrom<Value> for Map<Value>

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for Number

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> TCResult<Self>

Performs the conversion.

impl TryFrom<Value> for Tuple<Value>

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> TCResult<Self>

Performs the conversion.

impl TryFrom<Value> for bool

type Error = TCError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for Value