pub struct ListScalar<'a> { /* private fields */ }Expand description
A scalar value representing a list or fixed-size list (array) of elements.
We use the same ListScalar to represent both variants since a single list scalar’s data is
identical to a single fixed-size list scalar.
This type provides a view into a list or fixed-size list scalar value which can contain zero or
more elements of the same type, or be null. If the dtype is a FixedSizeList, then the
number of elements is equal to the size field of the FixedSizeList.
Implementations§
Source§impl<'a> ListScalar<'a>
impl<'a> ListScalar<'a>
Sourcepub fn try_new(
dtype: &'a DType,
value: Option<&'a ScalarValue>,
) -> VortexResult<Self>
pub fn try_new( dtype: &'a DType, value: Option<&'a ScalarValue>, ) -> VortexResult<Self>
Attempts to create a new ListScalar from a DType and optional ScalarValue.
§Errors
Returns an error if the data type is not a DType::List or DType::FixedSizeList.
Sourcepub fn len(&self) -> usize
pub fn len(&self) -> usize
Returns the number of elements in the list.
Returns 0 if the list is null.
Sourcepub fn element_dtype(&self) -> &DType
pub fn element_dtype(&self) -> &DType
Returns the data type of the list’s elements.
Trait Implementations§
Source§impl<'a> Clone for ListScalar<'a>
impl<'a> Clone for ListScalar<'a>
Source§fn clone(&self) -> ListScalar<'a>
fn clone(&self) -> ListScalar<'a>
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moreSource§impl<'a> Debug for ListScalar<'a>
impl<'a> Debug for ListScalar<'a>
Source§impl Display for ListScalar<'_>
impl Display for ListScalar<'_>
Source§impl Hash for ListScalar<'_>
impl Hash for ListScalar<'_>
Source§impl PartialEq for ListScalar<'_>
impl PartialEq for ListScalar<'_>
Source§impl PartialOrd for ListScalar<'_>
Ord is not implemented since it’s undefined for different element DTypes
impl PartialOrd for ListScalar<'_>
Ord is not implemented since it’s undefined for different element DTypes
Source§impl<'a> TryFrom<&'a Scalar> for ListScalar<'a>
impl<'a> TryFrom<&'a Scalar> for ListScalar<'a>
Source§type Error = VortexError
type Error = VortexError
Source§fn try_from(value: &'a Scalar) -> VortexResult<Self>
fn try_from(value: &'a Scalar) -> VortexResult<Self>
impl Eq for ListScalar<'_>
Auto Trait Implementations§
impl<'a> Freeze for ListScalar<'a>
impl<'a> !RefUnwindSafe for ListScalar<'a>
impl<'a> Send for ListScalar<'a>
impl<'a> Sync for ListScalar<'a>
impl<'a> Unpin for ListScalar<'a>
impl<'a> UnsafeUnpin for ListScalar<'a>
impl<'a> !UnwindSafe for ListScalar<'a>
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