Struct DictString 

pub struct DictString(pub String);

Dictionary-encoded Utf8 (Dictionary(Int16, Utf8)) wire type. On the user-facing side it’s just a String; the newtype controls the schema choice.

Tuple Fields

0: String

Trait Implementations

impl Clone for DictString

fn clone(&self) -> DictString

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DictString

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for DictString

impl From<DictString> for String

fn from(s: DictString) -> Self

Converts to this type from the input type.

impl From<String> for DictString

fn from(s: String) -> Self

Converts to this type from the input type.

impl PartialEq for DictString

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl StructuralPartialEq for DictString

impl VgiArrow for DictString

fn arrow_data_type() -> DataType

The Arrow DataType carrying values of this Rust type.

fn describe_name() -> String

Wire-format type name surfaced via __describe__ metadata. Mirrors Python: "str", "int", "list[int]", "int | None".

fn read(arr: &dyn Array, idx: usize) -> Result<Self>

Pull this value out of arr at row idx. Errors with a RpcError::type_error if arr’s concrete type doesn’t match Self::arrow_data_type().

fn build_singleton(value: Self) -> Result<ArrayRef>

Build a 1-row ArrayRef containing value.

fn nullable() -> bool

Whether the column should be flagged nullable. The default is false; the Option<T> blanket impl returns true.