Value

Enum Value 

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pub enum Value {
    Null,
    Bool(bool),
    Number(Number),
    String(String),
    Array(Vec<Value>),
    Object(IndexMap<String, Value>),
}
Expand description

Represents any valid TOON value.

This type is useful when you need to work with TOON data dynamically without knowing the schema ahead of time.

§Examples

use serde_toon2::{Value, Map, Number};

// Create a simple value
let name = Value::String("Ada".to_string());

// Create an object
let mut map = Map::new();
map.insert("name".to_string(), Value::String("Ada".to_string()));
map.insert("age".to_string(), Value::Number(Number::U64(42)));
let obj = Value::Object(map);

Variants§

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Null

Represents a null value.

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Bool(bool)

Represents a boolean value.

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Number(Number)

Represents a numeric value.

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String(String)

Represents a string value.

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Array(Vec<Value>)

Represents an array of values.

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Object(IndexMap<String, Value>)

Represents an object (map of string keys to values).

Implementations§

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impl Value

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pub fn is_null(&self) -> bool

Returns true if this value is null.

§Examples
use serde_toon2::Value;

assert!(Value::Null.is_null());
assert!(!Value::Bool(false).is_null());
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pub fn as_bool(&self) -> Option<bool>

If this value is a boolean, returns it. Otherwise returns None.

§Examples
use serde_toon2::Value;

assert_eq!(Value::Bool(true).as_bool(), Some(true));
assert_eq!(Value::Null.as_bool(), None);
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pub fn as_i64(&self) -> Option<i64>

If this value is a number, tries to convert it to i64. Otherwise returns None.

§Examples
use serde_toon2::Value;

let v: Value = 42i64.into();
assert_eq!(v.as_i64(), Some(42));

let v = Value::String("42".to_string());
assert_eq!(v.as_i64(), None);
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pub fn as_u64(&self) -> Option<u64>

If this value is a number, tries to convert it to u64. Otherwise returns None.

§Examples
use serde_toon2::Value;

let v: Value = 42u64.into();
assert_eq!(v.as_u64(), Some(42));

let v: Value = (-42i64).into();
assert_eq!(v.as_u64(), None);
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pub fn as_f64(&self) -> Option<f64>

If this value is a number, converts it to f64. Otherwise returns None.

§Examples
use serde_toon2::Value;

let v: Value = 3.14.into();
assert_eq!(v.as_f64(), Some(3.14));

let v = Value::String("3.14".to_string());
assert_eq!(v.as_f64(), None);
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pub fn as_str(&self) -> Option<&str>

If this value is a string, returns a reference to it. Otherwise returns None.

§Examples
use serde_toon2::Value;

let v = Value::String("hello".to_string());
assert_eq!(v.as_str(), Some("hello"));

let v = Value::Null;
assert_eq!(v.as_str(), None);
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pub fn as_array(&self) -> Option<&Vec<Value>>

If this value is an array, returns a reference to it. Otherwise returns None.

§Examples
use serde_toon2::Value;

let v = Value::Array(vec![Value::String("a".to_string())]);
assert!(v.as_array().is_some());

let v = Value::Null;
assert!(v.as_array().is_none());
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pub fn as_object(&self) -> Option<&IndexMap<String, Value>>

If this value is an object, returns a reference to it. Otherwise returns None.

§Examples
use serde_toon2::{Value, Map};

let mut map = Map::new();
map.insert("key".to_string(), Value::String("value".to_string()));
let v = Value::Object(map);
assert!(v.as_object().is_some());

let v = Value::Null;
assert!(v.as_object().is_none());

Trait Implementations§

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impl Clone for Value

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fn clone(&self) -> Value

Returns a duplicate of the value. Read more
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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<(), Error>

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for Value

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fn deserialize<__D>( __deserializer: __D, ) -> Result<Value, <__D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl<'de> Deserializer<'de> for Value

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type Error = Error

The error type that can be returned if some error occurs during deserialization.
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fn deserialize_any<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, Error>
where V: Visitor<'de>,

Require the Deserializer to figure out how to drive the visitor based on what data type is in the input. Read more
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fn deserialize_bool<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a bool value.
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fn deserialize_i8<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i8 value.
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fn deserialize_i16<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i16 value.
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fn deserialize_i32<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i32 value.
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fn deserialize_i64<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i64 value.
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fn deserialize_i128<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting an i128 value. Read more
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fn deserialize_u8<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a u8 value.
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fn deserialize_u16<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a u16 value.
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fn deserialize_u32<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a u32 value.
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fn deserialize_u64<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a u64 value.
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fn deserialize_u128<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting an u128 value. Read more
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fn deserialize_f32<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a f32 value.
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fn deserialize_f64<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a f64 value.
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fn deserialize_char<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a char value.
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fn deserialize_str<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a string value and does not benefit from taking ownership of buffered data owned by the Deserializer. Read more
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fn deserialize_string<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a string value and would benefit from taking ownership of buffered data owned by the Deserializer. Read more
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fn deserialize_bytes<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a byte array and does not benefit from taking ownership of buffered data owned by the Deserializer. Read more
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fn deserialize_byte_buf<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a byte array and would benefit from taking ownership of buffered data owned by the Deserializer. Read more
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fn deserialize_option<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting an optional value. Read more
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fn deserialize_unit<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a unit value.
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fn deserialize_unit_struct<V>( self, name: &'static str, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a unit struct with a particular name.
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fn deserialize_newtype_struct<V>( self, name: &'static str, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a newtype struct with a particular name.
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fn deserialize_seq<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a sequence of values.
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fn deserialize_tuple<V>( self, len: usize, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a sequence of values and knows how many values there are without looking at the serialized data.
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fn deserialize_tuple_struct<V>( self, name: &'static str, len: usize, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a tuple struct with a particular name and number of fields.
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fn deserialize_map<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a map of key-value pairs.
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fn deserialize_struct<V>( self, name: &'static str, fields: &'static [&'static str], visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting a struct with a particular name and fields.
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fn deserialize_enum<V>( self, name: &'static str, variants: &'static [&'static str], visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting an enum value with a particular name and possible variants.
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fn deserialize_identifier<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type is expecting the name of a struct field or the discriminant of an enum variant.
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fn deserialize_ignored_any<V>( self, visitor: V, ) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error>
where V: Visitor<'de>,

Hint that the Deserialize type needs to deserialize a value whose type doesn’t matter because it is ignored. Read more
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fn is_human_readable(&self) -> bool

Determine whether Deserialize implementations should expect to deserialize their human-readable form. Read more
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impl From<&str> for Value

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fn from(s: &str) -> Value

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

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fn from(m: IndexMap<String, Value>) -> Value

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

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fn from(s: String) -> Value

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

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fn from(v: Vec<T>) -> Value

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

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fn from(b: bool) -> Value

Converts to this type from the input type.
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impl From<f64> for Value

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fn from(n: f64) -> Value

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

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fn from(n: i64) -> Value

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

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fn from(n: u64) -> Value

Converts to this type from the input type.
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impl PartialEq for Value

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

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

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

Serialize this value into the given Serde serializer. 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 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, 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 = Infallible

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

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> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,