Enum MissingValue 

pub enum MissingValue {
    Null,
    Empty,
    Marker(String),
    NA,
    Dash,
    Unknown,
}

Represents a missing value placeholder.

Variants

Null

Standard null/None.

Empty

Empty string.

Marker(String)

Special marker string.

NA

NA string.

Dash

Dash placeholder.

Unknown

Question mark.

Implementations

impl MissingValue

pub fn to_string_value(&self) -> String

Converts to string representation.

pub fn common_representations() -> Vec<Self>

Returns common missing value representations.

Trait Implementations

impl Clone for MissingValue

fn clone(&self) -> MissingValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MissingValue

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

Formats the value using the given formatter.

impl PartialEq for MissingValue

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