pub type JsonObject = Map<String, Value>;
Expand description
The inner type of JsonValue::Object
.
Aliased Type§
struct JsonObject { /* private fields */ }
Implementations
Source§impl Map<String, Value>
impl Map<String, Value>
Sourcepub fn new() -> Map<String, Value>
Available on crate feature events
only.
pub fn new() -> Map<String, Value>
events
only.Makes a new empty Map.
Sourcepub fn with_capacity(capacity: usize) -> Map<String, Value>
Available on crate feature events
only.
pub fn with_capacity(capacity: usize) -> Map<String, Value>
events
only.Makes a new empty Map with the given initial capacity.
Sourcepub fn clear(&mut self)
Available on crate feature events
only.
pub fn clear(&mut self)
events
only.Clears the map, removing all values.
Sourcepub fn get<Q>(&self, key: &Q) -> Option<&Value>
Available on crate feature events
only.
pub fn get<Q>(&self, key: &Q) -> Option<&Value>
events
only.Returns a reference to the value corresponding to the key.
The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.
Sourcepub fn contains_key<Q>(&self, key: &Q) -> bool
Available on crate feature events
only.
pub fn contains_key<Q>(&self, key: &Q) -> bool
events
only.Returns true if the map contains a value for the specified key.
The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.
Sourcepub fn get_mut<Q>(&mut self, key: &Q) -> Option<&mut Value>
Available on crate feature events
only.
pub fn get_mut<Q>(&mut self, key: &Q) -> Option<&mut Value>
events
only.Returns a mutable reference to the value corresponding to the key.
The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.
Sourcepub fn get_key_value<Q>(&self, key: &Q) -> Option<(&String, &Value)>
Available on crate feature events
only.
pub fn get_key_value<Q>(&self, key: &Q) -> Option<(&String, &Value)>
events
only.Returns the key-value pair matching the given key.
The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.
Sourcepub fn insert(&mut self, k: String, v: Value) -> Option<Value>
Available on crate feature events
only.
pub fn insert(&mut self, k: String, v: Value) -> Option<Value>
events
only.Inserts a key-value pair into the map.
If the map did not have this key present, None
is returned.
If the map did have this key present, the value is updated, and the old value is returned.
Sourcepub fn remove<Q>(&mut self, key: &Q) -> Option<Value>
Available on crate feature events
only.
pub fn remove<Q>(&mut self, key: &Q) -> Option<Value>
events
only.Removes a key from the map, returning the value at the key if the key was previously in the map.
The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.
If serde_json’s “preserve_order” is enabled, .remove(key)
is
equivalent to [.swap_remove(key)
][Self::swap_remove], replacing this
entry’s position with the last element. If you need to preserve the
relative order of the keys in the map, use
[.shift_remove(key)
][Self::shift_remove] instead.
Sourcepub fn remove_entry<Q>(&mut self, key: &Q) -> Option<(String, Value)>
Available on crate feature events
only.
pub fn remove_entry<Q>(&mut self, key: &Q) -> Option<(String, Value)>
events
only.Removes a key from the map, returning the stored key and value if the key was previously in the map.
The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.
If serde_json’s “preserve_order” is enabled, .remove_entry(key)
is
equivalent to [.swap_remove_entry(key)
][Self::swap_remove_entry],
replacing this entry’s position with the last element. If you need to
preserve the relative order of the keys in the map, use
[.shift_remove_entry(key)
][Self::shift_remove_entry] instead.
Sourcepub fn append(&mut self, other: &mut Map<String, Value>)
Available on crate feature events
only.
pub fn append(&mut self, other: &mut Map<String, Value>)
events
only.Moves all elements from other into self, leaving other empty.
Sourcepub fn entry<S>(&mut self, key: S) -> Entry<'_>
Available on crate feature events
only.
pub fn entry<S>(&mut self, key: S) -> Entry<'_>
events
only.Gets the given key’s corresponding entry in the map for in-place manipulation.
Sourcepub fn len(&self) -> usize
Available on crate feature events
only.
pub fn len(&self) -> usize
events
only.Returns the number of elements in the map.
Sourcepub fn is_empty(&self) -> bool
Available on crate feature events
only.
pub fn is_empty(&self) -> bool
events
only.Returns true if the map contains no elements.
Sourcepub fn iter(&self) -> Iter<'_> ⓘ
Available on crate feature events
only.
pub fn iter(&self) -> Iter<'_> ⓘ
events
only.Gets an iterator over the entries of the map.
Sourcepub fn iter_mut(&mut self) -> IterMut<'_> ⓘ
Available on crate feature events
only.
pub fn iter_mut(&mut self) -> IterMut<'_> ⓘ
events
only.Gets a mutable iterator over the entries of the map.
Sourcepub fn keys(&self) -> Keys<'_> ⓘ
Available on crate feature events
only.
pub fn keys(&self) -> Keys<'_> ⓘ
events
only.Gets an iterator over the keys of the map.
Sourcepub fn values(&self) -> Values<'_> ⓘ
Available on crate feature events
only.
pub fn values(&self) -> Values<'_> ⓘ
events
only.Gets an iterator over the values of the map.
Sourcepub fn values_mut(&mut self) -> ValuesMut<'_> ⓘ
Available on crate feature events
only.
pub fn values_mut(&mut self) -> ValuesMut<'_> ⓘ
events
only.Gets an iterator over mutable values of the map.
Sourcepub fn into_values(self) -> IntoValues ⓘ
Available on crate feature events
only.
pub fn into_values(self) -> IntoValues ⓘ
events
only.Gets an iterator over the values of the map.
Sourcepub fn retain<F>(&mut self, f: F)
Available on crate feature events
only.
pub fn retain<F>(&mut self, f: F)
events
only.Retains only the elements specified by the predicate.
In other words, remove all pairs (k, v)
such that f(&k, &mut v)
returns false
.
Sourcepub fn sort_keys(&mut self)
Available on crate feature events
only.
pub fn sort_keys(&mut self)
events
only.Sorts this map’s entries in-place using str
’s usual ordering.
If serde_json’s “preserve_order” feature is not enabled, this method does no work because all JSON maps are always kept in a sorted state.
If serde_json’s “preserve_order” feature is enabled, this method destroys the original source order or insertion order of this map in favor of an alphanumerical order that matches how a BTreeMap with the same contents would be ordered. This takes O(n log n + c) time where n is the length of the map and c is the capacity.
Other maps nested within the values of this map are not sorted. If you
need the entire data structure to be sorted at all levels, you must also
call
map.values_mut().for_each(Value::sort_all_objects)
.
Trait Implementations
Source§impl<'de> Deserialize<'de> for Map<String, Value>
impl<'de> Deserialize<'de> for Map<String, Value>
Source§fn deserialize<D>(
deserializer: D,
) -> Result<Map<String, Value>, <D as Deserializer<'de>>::Error>where
D: Deserializer<'de>,
fn deserialize<D>(
deserializer: D,
) -> Result<Map<String, Value>, <D as Deserializer<'de>>::Error>where
D: Deserializer<'de>,
Source§impl<'de> Deserializer<'de> for Map<String, Value>
impl<'de> Deserializer<'de> for Map<String, Value>
Source§type Error = Error
type Error = Error
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self,
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self,
visitor: V,
) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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self,
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_variants: &'static [&'static str],
visitor: V,
) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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self,
_name: &'static str,
_variants: &'static [&'static str],
visitor: V,
) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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self,
visitor: V,
) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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visitor: V,
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self,
visitor: V,
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self,
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self,
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visitor: V,
) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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Deserialize
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self,
visitor: V,
) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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self,
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) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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self,
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) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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fields: &'static [&'static str],
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) -> Result<<V as Visitor<'de>>::Value, <Map<String, Value> as Deserializer<'de>>::Error>where
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fn is_human_readable(&self) -> bool
Deserialize
implementations should expect to
deserialize their human-readable form. Read moreSource§impl Extend<(String, Value)> for Map<String, Value>
impl Extend<(String, Value)> for Map<String, Value>
Source§fn extend<T>(&mut self, iter: T)
fn extend<T>(&mut self, iter: T)
Source§fn extend_one(&mut self, item: A)
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fn extend_reserve(&mut self, additional: usize)
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)Source§impl<Q> Index<&Q> for Map<String, Value>
Access an element of this map. Panics if the given key is not present in the
map.
impl<Q> Index<&Q> for Map<String, Value>
Access an element of this map. Panics if the given key is not present in the map.
match val {
Value::String(s) => Some(s.as_str()),
Value::Array(arr) => arr[0].as_str(),
Value::Object(map) => map["type"].as_str(),
_ => None,
}
Source§impl<Q> IndexMut<&Q> for Map<String, Value>
Mutably access an element of this map. Panics if the given key is not
present in the map.
impl<Q> IndexMut<&Q> for Map<String, Value>
Mutably access an element of this map. Panics if the given key is not present in the map.
map["key"] = json!("value");
Source§impl<'de> IntoDeserializer<'de, Error> for Map<String, Value>
impl<'de> IntoDeserializer<'de, Error> for Map<String, Value>
Source§fn into_deserializer(
self,
) -> <Map<String, Value> as IntoDeserializer<'de, Error>>::Deserializer
fn into_deserializer( self, ) -> <Map<String, Value> as IntoDeserializer<'de, Error>>::Deserializer
Source§impl Serialize for Map<String, Value>
Available on crate features std
or alloc
only.
impl Serialize for Map<String, Value>
std
or alloc
only.