Struct Column 

pub struct Column { /* private fields */ }

Lazy reference to a column by name

Column wraps a string column name and defers resolution until selection time. This separates user intent (“I want column A”) from runtime data (Field with dtype, metadata).

Implementations

impl Column

pub fn new(name: impl Into<String>) -> Self

Create a new column reference

Example

use minarrow::Column;

let col = Column::new("employee_id");
assert_eq!(col.name(), "employee_id");

pub fn name(&self) -> &str

Get the column name

pub fn into_name(self) -> String

Consume and return the column name as a String

Trait Implementations

impl AsRef<str> for Column

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Column

fn clone(&self) -> Column

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Column

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

Formats the value using the given formatter.

impl Eq for Column

impl From<&str> for Column

fn from(name: &str) -> Self

Converts to this type from the input type.

impl From<String> for Column

fn from(name: String) -> Self

Converts to this type from the input type.

impl Hash for Column

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Column

fn eq(&self, other: &Column) -> 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 Column