Enum Scalar 

pub enum Scalar {
    Null(NullKind),
    Bool(bool),
    Int64(i64),
    Float64(f64),
    Utf8(String),
    Timedelta64(i64),
    Datetime64(i64),
    Period(Period),
    Interval(Interval),
}

Variants

Null(NullKind)

Bool(bool)

Int64(i64)

Float64(f64)

Utf8(String)

Timedelta64(i64)

Datetime64(i64)

Nanoseconds since Unix epoch. Matches pandas datetime64[ns]. Uses Timestamp::NAT (i64::MIN) for missing values.

Period(Period)

Period value (ordinal + frequency). A Period whose ordinal is i64::MIN is NaT (missing). The frequency is carried so writers can render the pandas calendar string (2024Q1, 2024-03, …) — the calendar string is not recoverable from the ordinal alone, since different frequencies share overlapping ordinal axes.

Interval(Interval)

Numeric interval value. Missing values remain Scalar::Null.

Implementations

impl Scalar

pub fn dtype(&self) -> DType

pub fn is_missing(&self) -> bool

pub fn is_nan(&self) -> bool

pub const fn is_bool(&self) -> bool

Returns true if this is a Bool scalar.

pub const fn is_integer(&self) -> bool

Returns true if this is an Int64 scalar.

pub const fn is_float(&self) -> bool

Returns true if this is a Float64 scalar.

pub const fn is_numeric(&self) -> bool

Returns true if this is a numeric scalar (Int64 or Float64).

pub const fn is_string(&self) -> bool

Returns true if this is a Utf8 (string) scalar.

pub const fn is_datetime(&self) -> bool

Returns true if this is a Datetime64 scalar.

pub const fn is_timedelta(&self) -> bool

Returns true if this is a Timedelta64 scalar.

pub const fn is_period(&self) -> bool

Returns true if this is a Period scalar.

pub const fn is_interval(&self) -> bool

Returns true if this is an Interval scalar.

pub fn missing_for_dtype(dtype: DType) -> Self

pub fn semantic_eq(&self, other: &Self) -> bool

pub fn semantic_le(&self, other: &Self) -> bool

pub fn semantic_ge(&self, other: &Self) -> bool

pub fn is_null(&self) -> bool

pub fn is_na(&self) -> bool

pub fn coalesce(&self, other: &Self) -> Self

pub fn semantic_cmp(&self, other: &Self) -> Ordering

pub fn to_f64(&self) -> Result<f64, TypeError>

pub fn to_i64(&self) -> Result<i64, TypeError>

Try to convert to i64. Returns error for missing or non-numeric values.

pub fn to_bool(&self) -> Result<bool, TypeError>

Try to convert to bool. Returns error for missing values.

pub fn to_str(&self) -> String

Try to convert to string representation.

Trait Implementations

impl Clone for Scalar

fn clone(&self) -> Scalar

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Scalar

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Scalar

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Scalar

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

Formats the value using the given formatter.

impl From<&str> for Scalar

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<String> for Scalar

fn from(value: String) -> Self

Converts to this type from the input type.

impl From<bool> for Scalar

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f64> for Scalar

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i64> for Scalar

fn from(value: i64) -> Self

Converts to this type from the input type.

impl PartialEq for Scalar

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

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 Scalar