Struct polars_core::datatypes::Schema

pub struct Schema { /* fields omitted */ }

Implementations

impl Schema

pub fn rename<I, J, T, S>(&self, old_names: I, new_names: J) -> Result<Schema> where
    I: IntoIterator<Item = T>,
    J: IntoIterator<Item = S>,
    T: AsRef<str>,
    S: AsRef<str>, 

pub fn new(fields: Vec<Field>) -> Self

pub fn fields(&self) -> &Vec<Field>

Returns an immutable reference of the vector of Field instances

pub fn field(&self, i: usize) -> Option<&Field>

Returns an immutable reference of a specific Field instance selected using an offset within the internal fields vector

pub fn field_with_name(&self, name: &str) -> Result<&Field>

Returns an immutable reference of a specific Field instance selected by name

pub fn index_of(&self, name: &str) -> Result<usize>

Find the index of the column with the given name

pub fn to_arrow(&self) -> ArrowSchema

pub fn try_merge(schemas: &[Self]) -> Result<Self>

pub fn column_with_name(&self, name: &str) -> Option<(usize, &Field)>

Trait Implementations

impl Clone for Schema

fn clone(&self) -> Schema

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Schema

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

Formats the value using the given formatter.

impl Default for Schema

fn default() -> Self

Returns the "default value" for a type.

impl From<&'_ Schema> for Schema

fn from(a_schema: &ArrowSchema) -> Self

Performs the conversion.

impl From<Schema> for Schema

fn from(a_schema: ArrowSchema) -> Self

Performs the conversion.

impl Hash for Schema

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl PartialEq<Schema> for Schema

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralPartialEq for Schema