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Value

Enum Value 

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pub enum Value {
    Bool(bool),
    Int(i64),
    UInt(u64),
    Float(f32),
    Double(f64),
    String(String),
    Array(Array),
    Pair(Box<(Value, Value)>),
    Struct(Vec<(Arc<str>, Value)>),
}
Expand description

A decoded value: a primitive, a string, an array, a pair or a struct of named fields.

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Bool(bool)

A bool.

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Int(i64)

Signed integers of any width.

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UInt(u64)

Unsigned integers of any width.

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Float(f32)

A float.

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Double(f64)

A double.

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String(String)

A string.

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Array(Array)

A vector (Array node) or TypelessData.

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Pair(Box<(Value, Value)>)

A pair.

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Struct(Vec<(Arc<str>, Value)>)

Fields in type tree order.

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impl Value

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pub fn get(&self, name: &str) -> Option<&Value>

The field name of a struct.

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pub fn at(&self, path: &[&str]) -> Option<&Value>

Follow a path of field names.

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pub fn as_i64(&self) -> Option<i64>

The value as an i64 when it is an integer that fits.

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pub fn as_f32(&self) -> Option<f32>

The value when it is a float.

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pub fn as_str(&self) -> Option<&str>

The value when it is a string.

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pub fn as_bool(&self) -> Option<bool>

The value when it is a bool.

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pub fn as_array(&self) -> Option<&Array>

The value when it is an array.

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pub fn as_bytes(&self) -> Option<&[u8]>

The bytes of a UInt8, char or TypelessData array.

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pub fn to_json(&self, bytes: &dyn Fn(&[u8]) -> Json) -> Json

The value as JSON, byte arrays replaced by bytes(b) (e.g. a length and a digest, so a comparison need not hold millions of numbers). Non-finite floats become strings ("NaN", "inf", "-inf").

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impl Clone for Value

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Value

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

Formats the value using the given formatter. Read more
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impl PartialEq for Value

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for Value

Auto Trait Implementations§

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impl Freeze for Value

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impl RefUnwindSafe for Value

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impl Send for Value

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impl Sync for Value

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impl Unpin for Value

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impl UnsafeUnpin for Value

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impl UnwindSafe for Value

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.