Struct StrMatrix 

pub struct StrMatrix { /* private fields */ }

Row-major matrix of strings used by the categorical encoders.

Implementations

impl StrMatrix

pub fn new(data: Vec<Vec<String>>) -> Result<Self>

Creates a string matrix from a nested vector, validating a rectangular shape.

pub fn from_column<I, S>(col: I) -> Result<Self>

where I: IntoIterator<Item = S>, S: Into<String>,

Creates a single-column string matrix from an iterator of values.

pub fn from_strings<I, S>(rows: I) -> Result<Self>

where I: IntoIterator<Item = Vec<S>>, S: Into<String>,

Creates a string matrix from an iterator of rows.

pub fn nrows(&self) -> usize

Returns the number of rows.

pub fn ncols(&self) -> usize

Returns the number of columns.

pub fn get(&self, i: usize, j: usize) -> &str

Returns the string at row i, column j.

Panics

Panics if i >= nrows() or j >= ncols(). Use checked_get for a safe alternative.

pub fn checked_get(&self, i: usize, j: usize) -> Option<&str>

Returns Some(element) at row i, column j, or None if the indices are out of bounds.

pub fn column(&self, j: usize) -> Vec<String>

Returns column j as a new vector of strings.

pub fn row(&self, i: usize) -> &[String]

Returns the row at index i as a slice.

Trait Implementations

impl Clone for StrMatrix

fn clone(&self) -> StrMatrix

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StrMatrix

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StrMatrix

Available on crate feature serde only.

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for StrMatrix

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for StrMatrix

Available on crate feature serde only.

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for StrMatrix