pub struct MapType {
pub type_name: String,
pub key_type: DataType,
pub value_type: DataType,
pub value_contains_null: bool,
}
Expand description
A map stores an arbitrary length collection of key-value pairs
Fields§
§type_name: String
The type of this struct
key_type: DataType
The type of element used for the key of this map
value_type: DataType
The type of element used for the value of this map
value_contains_null: bool
Denoting whether this array can contain one or more null values
Implementations§
source§impl MapType
impl MapType
sourcepub fn new(
key_type: DataType,
value_type: DataType,
value_contains_null: bool
) -> MapType
pub fn new( key_type: DataType, value_type: DataType, value_contains_null: bool ) -> MapType
Creates a new map type
sourcepub const fn value_type(&self) -> &DataType
pub const fn value_type(&self) -> &DataType
Returns the value type of the map
sourcepub const fn value_contains_null(&self) -> bool
pub const fn value_contains_null(&self) -> bool
Returns whether the map can contain null values
Trait Implementations§
source§impl<'de> Deserialize<'de> for MapType
impl<'de> Deserialize<'de> for MapType
source§fn deserialize<__D>(
__deserializer: __D
) -> Result<MapType, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D
) -> Result<MapType, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
source§impl PartialEq for MapType
impl PartialEq for MapType
source§impl Serialize for MapType
impl Serialize for MapType
source§fn serialize<__S>(
&self,
__serializer: __S
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
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
source§impl TryFrom<&MapType> for Field
impl TryFrom<&MapType> for Field
§type Error = ArrowError
type Error = ArrowError
The type returned in the event of a conversion error.
impl Eq for MapType
impl StructuralPartialEq for MapType
Auto Trait Implementations§
impl Freeze for MapType
impl RefUnwindSafe for MapType
impl Send for MapType
impl Sync for MapType
impl Unpin for MapType
impl UnwindSafe for MapType
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreCreates a shared type from an unshared type.