Struct Row 

pub struct Row { /* private fields */ }

Represents a single row in a data frame.

Implementations

impl Row

Functions for creating, mutating, and getting data from Rows.

pub fn new(schema: &Schema) -> Self

Constructs a new Row with the given Schema and fills it with Null values.

pub fn set_int(&mut self, col_idx: usize, data: i64) -> Result<(), LiquidError>

Sets the field in this Row at the given col_idx to have the given data. The DataType at the col_idx must be an Int or it will return a TypeMismatch error.

pub fn set_float( &mut self, col_idx: usize, data: f64, ) -> Result<(), LiquidError>

Sets the field in this Row at the given col_idx to have the given data. The DataType at the col_idx must be an Int or it will return a TypeMismatch error.

pub fn set_bool( &mut self, col_idx: usize, data: bool, ) -> Result<(), LiquidError>

Sets the field in this Row at the given col_idx to have the given data. The DataType at the col_idx must be an Int or it will return a TypeMismatch error.

pub fn set_string( &mut self, col_idx: usize, data: String, ) -> Result<(), LiquidError>

Sets the field in this Row at the given col_idx to have the given data. The DataType at the col_idx must be an Int or it will return a TypeMismatch error.

pub fn set_null(&mut self, col_idx: usize) -> Result<(), LiquidError>

Sets the field in this Row at the given col_idx to be Null.

pub fn set_idx(&mut self, idx: usize)

Set the row offset in the dataframe for this Row.

pub fn get_idx(&self) -> Option<usize>

Get the current index of this Row. Is Some if the index has been set, and is None otherwise.

pub fn get(&self, idx: usize) -> Result<&Data, LiquidError>

Get a reference of the boxed value at the given idx.

pub fn width(&self) -> usize

Get the number of columns in this Row.

pub fn col_type(&self, idx: usize) -> Result<&DataType, LiquidError>

Get the DataType of the Column at the given idx.

pub fn accept<T: Fielder>(&self, f: &mut T) -> Result<(), LiquidError>

Accept a Fielder visitor for this row that visits all the elements in this Row. Note that this method is only useful if the data held in this Row is meaningful (ie, not only Data::Null).

Trait Implementations

impl Clone for Row

fn clone(&self) -> Row

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Row

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

Formats the value using the given formatter.

impl DeepSizeOf for Row

fn deep_size_of_children(&self, context: &mut Context) -> usize

Returns an estimation of the heap-managed storage of this object. This does not include the size of the object itself.

fn deep_size_of(&self) -> usize

Returns an estimation of a total size of memory owned by the object, including heap-managed storage.

fn recurse_deep_size_of(&self, context: &mut Context) -> usize

👎Deprecated since 0.1.1: use std::mem::size_of_val(val) + val.deep_size_of_children() instead

Deprecated: equivalent to std::mem::size_of_val(val) + val.deep_size_of_children()

impl<'de> Deserialize<'de> for Row

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Index<&str> for Row

type Output = Data

The returned type after indexing.

fn index(&self, name: &str) -> &Self::Output

Performs the indexing (container[index]) operation.

impl PartialEq for Row

fn eq(&self, other: &Row) -> 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 Serialize for Row

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 Row