Enum serde_mcf::Value
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pub enum Value { Null, Bool(bool), Number(Number), String(String), Array(Vec<Value>), Object(Map<String, Value>), }
Represents any valid JSON value.
See the serde_json::value
module documentation for usage examples.
Variants
Null
Represents a JSON null value.
let v = json!(null);
Bool(bool)
Represents a JSON boolean.
let v = json!(true);
Number(Number)
Represents a JSON number, whether integer or floating point.
let v = json!(12.5);
String(String)
Represents a JSON string.
let v = json!("a string");
Array(Vec<Value>)
Represents a JSON array.
let v = json!(["an", "array"]);
Object(Map<String, Value>)
Represents a JSON object.
By default the map is backed by a BTreeMap. Enable the preserve_order
feature of serde_json to use LinkedHashMap instead, which preserves
entries in the order they are inserted into the map. In particular, this
allows JSON data to be deserialized into a Value and serialized to a
string while retaining the order of map keys in the input.
let v = json!({ "an": "object" });
Methods
impl Value
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fn get<I>(&self, index: I) -> Option<&Value> where
I: Index,
I: Index,
Index into a JSON array or map. A string index can be used to access a value in a map, and a usize index can be used to access an element of an array.
Returns None
if the type of self
does not match the type of the
index, for example if the index is a string and self
is an array or a
number. Also returns None
if the given key does not exist in the map
or the given index is not within the bounds of the array.
let object = json!({ "A": 65, "B": 66, "C": 67 }); assert_eq!(*object.get("A").unwrap(), json!(65)); let array = json!([ "A", "B", "C" ]); assert_eq!(*array.get(2).unwrap(), json!("C")); assert_eq!(array.get("A"), None);
Square brackets can also be used to index into a value in a more concise
way. This returns Value::Null
in cases where get
would have returned
None
.
let object = json!({ "A": ["a", "á", "à"], "B": ["b", "b́"], "C": ["c", "ć", "ć̣", "ḉ"], }); assert_eq!(object["B"][0], json!("b")); assert_eq!(object["D"], json!(null)); assert_eq!(object[0]["x"]["y"]["z"], json!(null));
fn get_mut<I>(&mut self, index: I) -> Option<&mut Value> where
I: Index,
I: Index,
Mutably index into a JSON array or map. A string index can be used to access a value in a map, and a usize index can be used to access an element of an array.
Returns None
if the type of self
does not match the type of the
index, for example if the index is a string and self
is an array or a
number. Also returns None
if the given key does not exist in the map
or the given index is not within the bounds of the array.
let mut object = json!({ "A": 65, "B": 66, "C": 67 }); *object.get_mut("A").unwrap() = json!(69); let mut array = json!([ "A", "B", "C" ]); *array.get_mut(2).unwrap() = json!("D");
fn is_object(&self) -> bool
Returns true if the Value
is an Object. Returns false otherwise.
For any Value on which is_object
returns true, as_object
and
as_object_mut
are guaranteed to return the map representation of the
object.
let obj = json!({ "a": { "nested": true }, "b": ["an", "array"] }); assert!(obj.is_object()); assert!(obj["a"].is_object()); // array, not an object assert!(!obj["b"].is_object());
fn as_object(&self) -> Option<&Map<String, Value>>
If the Value
is an Object, returns the associated Map. Returns None
otherwise.
let v = json!({ "a": { "nested": true }, "b": ["an", "array"] }); // The length of `{"nested": true}` is 1 entry. assert_eq!(v["a"].as_object().unwrap().len(), 1); // The array `["an", "array"]` is not an object. assert_eq!(v["b"].as_object(), None);
fn as_object_mut(&mut self) -> Option<&mut Map<String, Value>>
If the Value
is an Object, returns the associated mutable Map.
Returns None otherwise.
let mut v = json!({ "a": { "nested": true } }); v["a"].as_object_mut().unwrap().clear(); assert_eq!(v, json!({ "a": {} }));
fn is_array(&self) -> bool
Returns true if the Value
is an Array. Returns false otherwise.
For any Value on which is_array
returns true, as_array
and
as_array_mut
are guaranteed to return the vector representing the
array.
let obj = json!({ "a": ["an", "array"], "b": { "an": "object" } }); assert!(obj["a"].is_array()); // an object, not an array assert!(!obj["b"].is_array());
fn as_array(&self) -> Option<&Vec<Value>>
If the Value
is an Array, returns the associated vector. Returns None
otherwise.
let v = json!({ "a": ["an", "array"], "b": { "an": "object" } }); // The length of `["an", "array"]` is 2 elements. assert_eq!(v["a"].as_array().unwrap().len(), 2); // The object `{"an": "object"}` is not an array. assert_eq!(v["b"].as_array(), None);
fn as_array_mut(&mut self) -> Option<&mut Vec<Value>>
If the Value
is an Array, returns the associated mutable vector.
Returns None otherwise.
let mut v = json!({ "a": ["an", "array"] }); v["a"].as_array_mut().unwrap().clear(); assert_eq!(v, json!({ "a": [] }));
fn is_string(&self) -> bool
Returns true if the Value
is a String. Returns false otherwise.
For any Value on which is_string
returns true, as_str
is guaranteed
to return the string slice.
let v = json!({ "a": "some string", "b": false }); assert!(v["a"].is_string()); // The boolean `false` is not a string. assert!(!v["b"].is_string());
fn as_str(&self) -> Option<&str>
If the Value
is a String, returns the associated str. Returns None
otherwise.
let v = json!({ "a": "some string", "b": false }); assert_eq!(v["a"].as_str(), Some("some string")); // The boolean `false` is not a string. assert_eq!(v["b"].as_str(), None);
fn is_number(&self) -> bool
Returns true if the Value
is a Number. Returns false otherwise.
let v = json!({ "a": 1, "b": "2" }); assert!(v["a"].is_number()); // The string `"2"` is a string, not a number. assert!(!v["b"].is_number());
fn is_i64(&self) -> bool
Returns true if the Value
is an integer between i64::MIN
and
i64::MAX
.
For any Value on which is_i64
returns true, as_i64
is guaranteed to
return the integer value.
let big = i64::MAX as u64 + 10; let v = json!({ "a": 64, "b": big, "c": 256.0 }); assert!(v["a"].is_i64()); // Greater than i64::MAX. assert!(!v["b"].is_i64()); // Numbers with a decimal point are not considered integers. assert!(!v["c"].is_i64());
fn is_u64(&self) -> bool
Returns true if the Value
is an integer between zero and u64::MAX
.
For any Value on which is_u64
returns true, as_u64
is guaranteed to
return the integer value.
let v = json!({ "a": 64, "b": -64, "c": 256.0 }); assert!(v["a"].is_u64()); // Negative integer. assert!(!v["b"].is_u64()); // Numbers with a decimal point are not considered integers. assert!(!v["c"].is_u64());
fn is_f64(&self) -> bool
Returns true if the Value
is a number that can be represented by f64.
For any Value on which is_f64
returns true, as_f64
is guaranteed to
return the floating point value.
Currently this function returns true if and only if both is_i64
and
is_u64
return false but this is not a guarantee in the future.
let v = json!({ "a": 256.0, "b": 64, "c": -64 }); assert!(v["a"].is_f64()); // Integers. assert!(!v["b"].is_f64()); assert!(!v["c"].is_f64());
fn as_i64(&self) -> Option<i64>
If the Value
is an integer, represent it as i64 if possible. Returns
None otherwise.
let big = i64::MAX as u64 + 10; let v = json!({ "a": 64, "b": big, "c": 256.0 }); assert_eq!(v["a"].as_i64(), Some(64)); assert_eq!(v["b"].as_i64(), None); assert_eq!(v["c"].as_i64(), None);
fn as_u64(&self) -> Option<u64>
If the Value
is an integer, represent it as u64 if possible. Returns
None otherwise.
let v = json!({ "a": 64, "b": -64, "c": 256.0 }); assert_eq!(v["a"].as_u64(), Some(64)); assert_eq!(v["b"].as_u64(), None); assert_eq!(v["c"].as_u64(), None);
fn as_f64(&self) -> Option<f64>
If the Value
is a number, represent it as f64 if possible. Returns
None otherwise.
let v = json!({ "a": 256.0, "b": 64, "c": -64 }); assert_eq!(v["a"].as_f64(), Some(256.0)); assert_eq!(v["b"].as_f64(), Some(64.0)); assert_eq!(v["c"].as_f64(), Some(-64.0));
fn is_boolean(&self) -> bool
Returns true if the Value
is a Boolean. Returns false otherwise.
For any Value on which is_boolean
returns true, as_bool
is
guaranteed to return the boolean value.
let v = json!({ "a": false, "b": "false" }); assert!(v["a"].is_boolean()); // The string `"false"` is a string, not a boolean. assert!(!v["b"].is_boolean());
fn as_bool(&self) -> Option<bool>
If the Value
is a Boolean, returns the associated bool. Returns None
otherwise.
let v = json!({ "a": false, "b": "false" }); assert_eq!(v["a"].as_bool(), Some(false)); // The string `"false"` is a string, not a boolean. assert_eq!(v["b"].as_bool(), None);
fn is_null(&self) -> bool
Returns true if the Value
is a Null. Returns false otherwise.
For any Value on which is_null
returns true, as_null
is guaranteed
to return Some(())
.
let v = json!({ "a": null, "b": false }); assert!(v["a"].is_null()); // The boolean `false` is not null. assert!(!v["b"].is_null());
fn as_null(&self) -> Option<()>
If the Value
is a Null, returns (). Returns None otherwise.
let v = json!({ "a": null, "b": false }); assert_eq!(v["a"].as_null(), Some(())); // The boolean `false` is not null. assert_eq!(v["b"].as_null(), None);
fn pointer(&'a self, pointer: &str) -> Option<&'a Value>
Looks up a value by a JSON Pointer.
JSON Pointer defines a string syntax for identifying a specific value within a JavaScript Object Notation (JSON) document.
A Pointer is a Unicode string with the reference tokens separated by /
.
Inside tokens /
is replaced by ~1
and ~
is replaced by ~0
. The
addressed value is returned and if there is no such value None
is
returned.
For more information read RFC6901.
Examples
let data = json!({ "x": { "y": ["z", "zz"] } }); assert_eq!(data.pointer("/x/y/1").unwrap(), &json!("zz")); assert_eq!(data.pointer("/a/b/c"), None);
fn pointer_mut(&'a mut self, pointer: &str) -> Option<&'a mut Value>
Looks up a value by a JSON Pointer and returns a mutable reference to that value.
JSON Pointer defines a string syntax for identifying a specific value within a JavaScript Object Notation (JSON) document.
A Pointer is a Unicode string with the reference tokens separated by /
.
Inside tokens /
is replaced by ~1
and ~
is replaced by ~0
. The
addressed value is returned and if there is no such value None
is
returned.
For more information read RFC6901.
Example of Use
extern crate serde_json; use serde_json::Value; use std::mem; fn main() { let s = r#"{"x": 1.0, "y": 2.0}"#; let mut value: Value = serde_json::from_str(s).unwrap(); // Check value using read-only pointer assert_eq!(value.pointer("/x"), Some(&1.0.into())); // Change value with direct assignment *value.pointer_mut("/x").unwrap() = 1.5.into(); // Check that new value was written assert_eq!(value.pointer("/x"), Some(&1.5.into())); // "Steal" ownership of a value. Can replace with any valid Value. let old_x = value.pointer_mut("/x").map(|x| mem::replace(x, Value::Null)).unwrap(); assert_eq!(old_x, 1.5); assert_eq!(value.pointer("/x").unwrap(), &Value::Null); }
Trait Implementations
impl Display for Value
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fn fmt(&self, f: &mut Formatter) -> Result<(), Error>
Display a JSON value as a string.
let json = json!({ "city": "London", "street": "10 Downing Street" }); // Compact format: // // {"city":"London","street":"10 Downing Street"} let compact = format!("{}", json); assert_eq!(compact, "{\"city\":\"London\",\"street\":\"10 Downing Street\"}"); // Pretty format: // // { // "city": "London", // "street": "10 Downing Street" // } let pretty = format!("{:#}", json); assert_eq!(pretty, "{\n \"city\": \"London\",\n \"street\": \"10 Downing Street\"\n}");
impl From<f32> for Value
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fn from(f: f32) -> Value
Convert 32-bit floating point number to Value
Examples
use serde_json::Value; let f: f32 = 13.37; let x: Value = f.into();
impl<T> From<Vec<T>> for Value where
T: Into<Value>,
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T: Into<Value>,
fn from(f: Vec<T>) -> Value
Convert a Vec
to Value
Examples
use serde_json::Value; let v = vec!["lorem", "ipsum", "dolor"]; let x: Value = v.into();
impl From<bool> for Value
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impl From<Map<String, Value>> for Value
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fn from(f: Map<String, Value>) -> Value
Convert map (with string keys) to Value
Examples
use serde_json::{Map, Value}; let mut m = Map::new(); m.insert("Lorem".to_string(), "ipsum".into()); let x: Value = m.into();
impl From<i32> for Value
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impl From<i8> for Value
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impl From<u64> for Value
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impl From<i64> for Value
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impl From<usize> for Value
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impl From<String> for Value
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fn from(f: String) -> Value
Convert String
to Value
Examples
use serde_json::Value; let s: String = "lorem".to_string(); let x: Value = s.into();
impl From<f64> for Value
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fn from(f: f64) -> Value
Convert 64-bit floating point number to Value
Examples
use serde_json::Value; let f: f64 = 13.37; let x: Value = f.into();
impl From<u32> for Value
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impl<'a> From<&'a str> for Value
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fn from(f: &str) -> Value
Convert string slice to Value
Examples
use serde_json::Value; let s: &str = "lorem"; let x: Value = s.into();
impl From<u16> for Value
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impl From<u8> for Value
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impl<'a> From<Cow<'a, str>> for Value
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fn from(f: Cow<'a, str>) -> Value
Convert copy-on-write string to Value
Examples
use serde_json::Value; use std::borrow::Cow; let s: Cow<str> = Cow::Borrowed("lorem"); let x: Value = s.into();
use serde_json::Value; use std::borrow::Cow; let s: Cow<str> = Cow::Owned("lorem".to_string()); let x: Value = s.into();
impl From<isize> for Value
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impl<'a, T> From<&'a [T]> for Value where
T: Clone + Into<Value>,
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T: Clone + Into<Value>,
fn from(f: &'a [T]) -> Value
Convert a slice to Value
Examples
use serde_json::Value; let v: &[&str] = &["lorem", "ipsum", "dolor"]; let x: Value = v.into();
impl From<i16> for Value
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impl FromStr for Value
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impl<I> IndexMut<I> for Value where
I: Index,
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I: Index,
fn index_mut(&mut self, index: I) -> &mut Value
Write into a serde_json::Value
using the syntax value[0] = ...
or
value["k"] = ...
.
If the index is a number, the value must be an array of length bigger than the index. Indexing into a value that is not an array or an array that is too small will panic.
If the index is a string, the value must be an object or null which is treated like an empty object. If the key is not already present in the object, it will be inserted with a value of null. Indexing into a value that is neither an object nor null will panic.
Examples
let mut data = json!({ "x": 0 }); // replace an existing key data["x"] = json!(1); // insert a new key data["y"] = json!([false, false, false]); // replace an array value data["y"][0] = json!(true); // inserted a deeply nested key data["a"]["b"]["c"]["d"] = json!(true); println!("{}", data);
impl Debug for Value
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fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>
Formats the value using the given formatter.
impl<T> FromIterator<T> for Value where
T: Into<Value>,
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T: Into<Value>,
fn from_iter<I>(iter: I) -> Value where
I: IntoIterator<Item = T>,
I: IntoIterator<Item = T>,
Convert an iteratable type to a Value
Examples
use serde_json::Value; let v = std::iter::repeat(42).take(5); let x: Value = v.collect();
use serde_json::Value; let v: Vec<_> = vec!["lorem", "ipsum", "dolor"]; let x: Value = v.into_iter().collect();
use std::iter::FromIterator; use serde_json::Value; let x: Value = Value::from_iter(vec!["lorem", "ipsum", "dolor"]);
impl Default for Value
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The default value is Value::Null
.
This is useful for handling omitted Value
fields when deserializing.
Examples
use serde_json::Value; #[derive(Deserialize)] struct Settings { level: i32, #[serde(default)] extras: Value, } let data = r#" { "level": 42 } "#; let s: Settings = serde_json::from_str(data)?; assert_eq!(s.level, 42); assert_eq!(s.extras, Value::Null);
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,
&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
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. Read more
fn deserialize_any<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
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
fn deserialize_option<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting an optional value. Read more
fn deserialize_enum<V>(
self,
_name: &str,
_variants: &'static [&'static str],
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
self,
_name: &str,
_variants: &'static [&'static str],
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting an enum value with a particular name and possible variants. Read more
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>,
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. Read more
fn deserialize_bool<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_i8<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_i16<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_i32<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_i64<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_u8<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_u16<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_u32<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_u64<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_f32<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_f64<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_char<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_str<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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
fn deserialize_string<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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
fn deserialize_bytes<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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
fn deserialize_byte_buf<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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
fn deserialize_unit<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
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>,
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. Read more
fn deserialize_seq<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
fn deserialize_tuple<V>(
self,
len: usize,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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. Read more
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>,
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. Read more
fn deserialize_map<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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.
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>,
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. Read more
fn deserialize_identifier<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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. Read more
fn deserialize_ignored_any<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
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
impl<'de> Deserializer<'de> for &'de Value
[src]
type Error = Error
The error type that can be returned if some error occurs during deserialization. Read more
fn deserialize_any<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
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
fn deserialize_option<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting an optional value. Read more
fn deserialize_enum<V>(
self,
_name: &str,
_variants: &'static [&'static str],
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
self,
_name: &str,
_variants: &'static [&'static str],
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting an enum value with a particular name and possible variants. Read more
fn deserialize_newtype_struct<V>(
self,
_name: &'static str,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
_name: &'static str,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a newtype struct with a particular name. Read more
fn deserialize_bool<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a bool
value.
fn deserialize_i8<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting an i8
value.
fn deserialize_i16<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting an i16
value.
fn deserialize_i32<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting an i32
value.
fn deserialize_i64<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting an i64
value.
fn deserialize_u8<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a u8
value.
fn deserialize_u16<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a u16
value.
fn deserialize_u32<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a u32
value.
fn deserialize_u64<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a u64
value.
fn deserialize_f32<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a f32
value.
fn deserialize_f64<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a f64
value.
fn deserialize_char<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a char
value.
fn deserialize_str<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de 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
fn deserialize_string<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de 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
fn deserialize_bytes<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de 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
fn deserialize_byte_buf<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de 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
fn deserialize_unit<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a unit value.
fn deserialize_unit_struct<V>(
self,
name: &'static str,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
name: &'static str,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a unit struct with a particular name. Read more
fn deserialize_seq<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a sequence of values.
fn deserialize_tuple<V>(
self,
len: usize,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
len: usize,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de 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. Read more
fn deserialize_tuple_struct<V>(
self,
name: &'static str,
len: usize,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
name: &'static str,
len: usize,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de 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. Read more
fn deserialize_map<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a map of key-value pairs.
fn deserialize_struct<V>(
self,
name: &'static str,
fields: &'static [&'static str],
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
name: &'static str,
fields: &'static [&'static str],
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
Hint that the Deserialize
type is expecting a struct with a particular name and fields. Read more
fn deserialize_identifier<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de 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. Read more
fn deserialize_ignored_any<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de Value as Deserializer<'de>>::Error> where
V: Visitor<'de>,
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, <&'de 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
impl Clone for Value
[src]
impl<'de> Deserialize<'de> for Value
[src]
fn deserialize<D>(
deserializer: D
) -> Result<Value, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,
deserializer: D
) -> Result<Value, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
impl PartialEq<usize> for Value
[src]
fn eq(&self, other: &usize) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<u32> for &'a mut Value
[src]
fn eq(&self, other: &u32) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<i64> for &'a mut Value
[src]
fn eq(&self, other: &i64) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<usize> for &'a mut Value
[src]
fn eq(&self, other: &usize) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<u32> for Value
[src]
fn eq(&self, other: &u32) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<f32> for Value
[src]
fn eq(&self, other: &f32) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<str> for Value
[src]
fn eq(&self, other: &str) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<u8> for Value
[src]
fn eq(&self, other: &u8) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<isize> for Value
[src]
fn eq(&self, other: &isize) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<f64> for Value
[src]
fn eq(&self, other: &f64) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<i32> for Value
[src]
fn eq(&self, other: &i32) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<u8> for &'a mut Value
[src]
fn eq(&self, other: &u8) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<i32> for &'a mut Value
[src]
fn eq(&self, other: &i32) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<f32> for &'a Value
[src]
fn eq(&self, other: &f32) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<f64> for &'a Value
[src]
fn eq(&self, other: &f64) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<u16> for Value
[src]
fn eq(&self, other: &u16) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<i64> for &'a Value
[src]
fn eq(&self, other: &i64) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<u64> for &'a Value
[src]
fn eq(&self, other: &u64) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<i32> for &'a Value
[src]
fn eq(&self, other: &i32) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<u16> for &'a Value
[src]
fn eq(&self, other: &u16) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<i8> for &'a mut Value
[src]
fn eq(&self, other: &i8) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<isize> for &'a Value
[src]
fn eq(&self, other: &isize) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<i16> for &'a mut Value
[src]
fn eq(&self, other: &i16) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<isize> for &'a mut Value
[src]
fn eq(&self, other: &isize) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<i64> for Value
[src]
fn eq(&self, other: &i64) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<&'a str> for Value
[src]
fn eq(&self, other: &&str) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<u8> for &'a Value
[src]
fn eq(&self, other: &u8) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<u32> for &'a Value
[src]
fn eq(&self, other: &u32) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<f32> for &'a mut Value
[src]
fn eq(&self, other: &f32) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<u64> for &'a mut Value
[src]
fn eq(&self, other: &u64) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<u64> for Value
[src]
fn eq(&self, other: &u64) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<i16> for &'a Value
[src]
fn eq(&self, other: &i16) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<i16> for Value
[src]
fn eq(&self, other: &i16) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<i8> for &'a Value
[src]
fn eq(&self, other: &i8) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<usize> for &'a Value
[src]
fn eq(&self, other: &usize) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<u16> for &'a mut Value
[src]
fn eq(&self, other: &u16) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<Value> for Value
[src]
fn eq(&self, __arg_0: &Value) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &Value) -> bool
This method tests for !=
.
impl PartialEq<String> for Value
[src]
fn eq(&self, other: &String) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<'a> PartialEq<f64> for &'a mut Value
[src]
fn eq(&self, other: &f64) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl PartialEq<i8> for Value
[src]
fn eq(&self, other: &i8) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl<I> Index<I> for Value where
I: Index,
[src]
I: Index,
type Output = Value
fn index(&self, index: I) -> &Value
Index into a serde_json::Value
using the syntax value[0]
or
value["k"]
.
Returns Value::Null
if the type of self
does not match the type of
the index, for example if the index is a string and self
is an array
or a number. Also returns Value::Null
if the given key does not exist
in the map or the given index is not within the bounds of the array.
For retrieving deeply nested values, you should have a look at the
Value::pointer
method.
Examples
let data = json!({ "x": { "y": ["z", "zz"] } }); assert_eq!(data["x"]["y"], json!(["z", "zz"])); assert_eq!(data["x"]["y"][0], json!("z")); assert_eq!(data["a"], json!(null)); // returns null for undefined values assert_eq!(data["a"]["b"], json!(null)); // does not panic