Enum Value

pub enum Value {
    Binary(Vec<u8>),
    Float(f64),
    Integer(i64),
    String(String),
    Null,
}

A value.

Variants

Binary(Vec<u8>)

Binary data.

Float(f64)

A floating-point number.

Integer(i64)

An integer number.

String(String)

A string.

Null

A null value.

Implementations

impl Value

pub fn kind(&self) -> Type

Return the type.

pub fn try_into<'l, T>(&'l self) -> Result<T>

where T: TryFrom<&'l Value, Error = Error>,

Try to return the value.

Trait Implementations

impl BindableWithIndex for &Value

fn bind<T: ParameterIndex>( self, statement: &mut Statement<'_>, index: T, ) -> Result<()>

Bind to a parameter.

impl BindableWithIndex for Value

fn bind<T: ParameterIndex>( self, statement: &mut Statement<'_>, index: T, ) -> Result<()>

Bind to a parameter.

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Default for Value

fn default() -> Value

Returns the “default value” for a type.

impl From<&[u8]> for Value

fn from(value: &[u8]) -> Self

Converts to this type from the input type.

impl From<&str> for Value

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<()> for Value

fn from(_: ()) -> Self

Converts to this type from the input type.

impl<T> From<Option<T>> for Value

where T: Into<Value>, Value: From<T>,

fn from(value: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(value: String) -> Self

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(value: Vec<u8>) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(value: i64) -> Self

Converts to this type from the input type.

impl PartialEq for Value

fn eq(&self, other: &Value) -> 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 ReadableWithIndex for Value

fn read<T: ColumnIndex>(statement: &Statement<'_>, index: T) -> Result<Self>

Read from a column.

impl<'l> TryFrom<&'l Value> for &'l [u8]

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &'l Value) -> Result<Self>

Performs the conversion.

impl<'l> TryFrom<&'l Value> for &'l str

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &'l Value) -> Result<Self>

Performs the conversion.

impl TryFrom<&Value> for ()

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self>

Performs the conversion.

impl<'l> TryFrom<&'l Value> for Option<&'l [u8]>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &'l Value) -> Result<Self>

Performs the conversion.

impl<'l> TryFrom<&'l Value> for Option<&'l str>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &'l Value) -> Result<Self>

Performs the conversion.

impl TryFrom<&Value> for Option<f64>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self>

Performs the conversion.

impl TryFrom<&Value> for Option<i64>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self>

Performs the conversion.

impl TryFrom<&Value> for f64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self>

Performs the conversion.

impl TryFrom<&Value> for i64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self>

Performs the conversion.

impl TryFrom<Value> for Option<String>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self>

Performs the conversion.

impl TryFrom<Value> for Option<Vec<u8>>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self>

Performs the conversion.

impl TryFrom<Value> for String

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self>

Performs the conversion.

impl TryFrom<Value> for Vec<u8>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self>

Performs the conversion.

impl StructuralPartialEq for Value