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Value

Enum Value 

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pub enum Value {
    Null,
    Bool(bool),
    Int(i64),
    UInt(u64),
    Float(f64),
    Str(String),
    List(Vec<Value>),
}
Expand description

One prop value: text, a number, true or false, or a list.

You rarely build one by hand. Anything that converts with .into() works: &str, String, bool, every integer type, f32, f64, Option<T> (None means “leave it out”), and Vec<T> or arrays for lists.

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Null

No value. The prop is left out. In per-call page props it removes a configured prop with the same key.

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Bool(bool)

true or false.

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Int(i64)

A whole number.

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UInt(u64)

A whole number too big for i64.

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Float(f64)

A number with a fraction.

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Str(String)

Text.

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List(Vec<Value>)

A list of values.

Trait Implementations§

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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 From<&String> for Value

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fn from(value: &String) -> Self

Converts to this type from the input type.
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impl From<&Value> for Value

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fn from(value: &Value) -> Self

Converts to this type from the input type.
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impl<T: Into<Value> + Clone> From<&[T]> for Value

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fn from(value: &[T]) -> Self

Converts to this type from the input type.
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impl From<&str> for Value

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fn from(value: &str) -> Self

Converts to this type from the input type.
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impl From<Cow<'_, str>> for Value

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fn from(value: Cow<'_, str>) -> Self

Converts to this type from the input type.
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impl<T: Into<Value>> From<Option<T>> for Value

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

Converts to this type from the input type.
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impl From<String> for Value

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fn from(value: String) -> Self

Converts to this type from the input type.
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impl<T: Into<Value>> From<Vec<T>> for Value

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fn from(value: Vec<T>) -> Self

Converts to this type from the input type.
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impl<T: Into<Value>, const N: usize> From<[T; N]> for Value

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fn from(value: [T; N]) -> Self

Converts to this type from the input type.
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impl From<bool> for Value

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fn from(value: bool) -> Self

Converts to this type from the input type.
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impl From<char> for Value

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fn from(value: char) -> Self

Converts to this type from the input type.
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impl From<f32> for Value

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fn from(value: f32) -> Self

Goes through text so 1.1_f32 stays 1.1 and does not become 1.100000023841858.

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impl From<f64> for Value

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fn from(value: f64) -> Self

Converts to this type from the input type.
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impl From<i8> for Value

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fn from(value: i8) -> Self

Converts to this type from the input type.
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impl From<i16> for Value

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fn from(value: i16) -> Self

Converts to this type from the input type.
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impl From<i32> for Value

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fn from(value: i32) -> Self

Converts to this type from the input type.
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impl From<i64> for Value

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fn from(value: i64) -> Self

Converts to this type from the input type.
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impl From<isize> for Value

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fn from(value: isize) -> Self

Converts to this type from the input type.
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impl From<u8> for Value

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fn from(value: u8) -> Self

Converts to this type from the input type.
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impl From<u16> for Value

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fn from(value: u16) -> Self

Converts to this type from the input type.
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impl From<u32> for Value

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fn from(value: u32) -> Self

Converts to this type from the input type.
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impl From<u64> for Value

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fn from(value: u64) -> Self

Converts to this type from the input type.
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impl From<usize> for Value

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fn from(value: usize) -> Self

Converts to this type from the input type.
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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

Blanket Implementations§

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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<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> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> 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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more