Enum migration::Value

pub enum Value {
    Bool(Option<bool>),
    TinyInt(Option<i8>),
    SmallInt(Option<i16>),
    Int(Option<i32>),
    BigInt(Option<i64>),
    TinyUnsigned(Option<u8>),
    SmallUnsigned(Option<u16>),
    Unsigned(Option<u32>),
    BigUnsigned(Option<u64>),
    Float(Option<f32>),
    Double(Option<f64>),
    String(Option<Box<String>>),
    Char(Option<char>),
    Bytes(Option<Box<Vec<u8>>>),
}

Value variants

We want the inner Value to be exactly 1 pointer sized, so anything larger should be boxed.

If the hashable-value feature is enabled, NaN == NaN, which contradicts Rust’s built-in implementation of NaN != NaN.

Variants

Bool(Option<bool>)

TinyInt(Option<i8>)

SmallInt(Option<i16>)

Int(Option<i32>)

BigInt(Option<i64>)

TinyUnsigned(Option<u8>)

SmallUnsigned(Option<u16>)

Unsigned(Option<u32>)

BigUnsigned(Option<u64>)

Float(Option<f32>)

Double(Option<f64>)

String(Option<Box<String>>)

Char(Option<char>)

Bytes(Option<Box<Vec<u8>>>)

Implementations

impl Value

pub fn unwrap<T>(self) -> T

where T: ValueType,

pub fn expect<T>(self, msg: &str) -> T

where T: ValueType,

Trait Implementations

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<(), Error>

Formats the value using the given formatter.

impl Display for Value

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

Formats the value using the given formatter.

impl From<&[u8]> for Value

fn from(x: &[u8]) -> Value

Converts to this type from the input type.

impl From<&String> for Value

fn from(x: &String) -> Value

Converts to this type from the input type.

impl From<&str> for Value

fn from(x: &str) -> Value

Converts to this type from the input type.

impl From<Cow<'_, str>> for Value

fn from(x: Cow<'_, str>) -> Value

Converts to this type from the input type.

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

where T: Into<Value> + Nullable,

fn from(x: Option<T>) -> Value

Converts to this type from the input type.

impl From<String> for Value

fn from(x: String) -> Value

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(x: Vec<u8>) -> Value

Converts to this type from the input type.

impl From<bool> for Value

fn from(x: bool) -> Value

Converts to this type from the input type.

impl From<char> for Value

fn from(x: char) -> Value

Converts to this type from the input type.

impl From<f32> for Value

fn from(x: f32) -> Value

Converts to this type from the input type.

impl From<f64> for Value

fn from(x: f64) -> Value

Converts to this type from the input type.

impl From<i16> for Value

fn from(x: i16) -> Value

Converts to this type from the input type.

impl From<i32> for Value

fn from(x: i32) -> Value

Converts to this type from the input type.

impl From<i64> for Value

fn from(x: i64) -> Value

Converts to this type from the input type.

impl From<i8> for Value

fn from(x: i8) -> Value

Converts to this type from the input type.

impl From<u16> for Value

fn from(x: u16) -> Value

Converts to this type from the input type.

impl From<u32> for Value

fn from(x: u32) -> Value

Converts to this type from the input type.

impl From<u64> for Value

fn from(x: u64) -> Value

Converts to this type from the input type.

impl From<u8> for Value

fn from(x: u8) -> Value

Converts to this type from the input type.

impl Hash for Value

fn hash<__H>(&self, __state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Value

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Value