Value

Enum Value 

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pub enum Value {
    Null,
    Integer(i64),
    Real(f64),
    Text(String),
    Blob(Vec<u8>),
}
Expand description

Owning dynamic type value. Value’s type is typically dictated by SQLite (not by the caller).

See ValueRef for a non-owning dynamic type value.

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Null

The value is a NULL value.

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Integer(i64)

The value is a signed integer.

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Real(f64)

The value is a floating point number.

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Text(String)

The value is a text string.

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Blob(Vec<u8>)

The value is a blob of data

Implementations§

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impl Value

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pub fn data_type(&self) -> Type

Returns SQLite fundamental datatype.

Trait Implementations§

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impl Clone for Value

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fn clone(&self) -> Value

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Value

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

Formats the value using the given formatter. Read more
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impl<'a> From<&'a Value> for ValueRef<'a>

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fn from(value: &'a Value) -> Self

Converts to this type from the input type.
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impl From<Null> for Value

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fn from(_: Null) -> Self

Converts to this type from the input type.
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impl<T> From<Option<T>> for Value
where T: Into<Self>,

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

Converts to this type from the input type.
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impl From<String> for Value

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fn from(s: String) -> Self

Converts to this type from the input type.
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impl From<ValueRef<'_>> for Value

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fn from(borrowed: ValueRef<'_>) -> Self

Converts to this type from the input type.
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impl From<Vec<u8>> for Value

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

Converts to this type from the input type.
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impl From<bool> for Value

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fn from(i: bool) -> Self

Converts to this type from the input type.
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impl From<f32> for Value

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fn from(f: f32) -> Self

Converts to this type from the input type.
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impl From<f64> for Value

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fn from(f: f64) -> Self

Converts to this type from the input type.
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impl From<i16> for Value

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fn from(i: i16) -> Value

Converts to this type from the input type.
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impl From<i32> for Value

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fn from(i: i32) -> Value

Converts to this type from the input type.
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impl From<i64> for Value

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fn from(i: i64) -> Self

Converts to this type from the input type.
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impl From<i8> for Value

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fn from(i: i8) -> Value

Converts to this type from the input type.
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impl From<isize> for Value

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fn from(i: isize) -> Self

Converts to this type from the input type.
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impl From<u16> for Value

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fn from(i: u16) -> Value

Converts to this type from the input type.
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impl From<u32> for Value

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fn from(i: u32) -> Value

Converts to this type from the input type.
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impl From<u8> for Value

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fn from(i: u8) -> Value

Converts to this type from the input type.
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impl FromSql for Value

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fn column_result(value: ValueRef<'_>) -> FromSqlResult<Self>

Converts SQLite value into Rust value.
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impl PartialEq for Value

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl ToSql for Value

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fn to_sql(&self) -> Result<ToSqlOutput<'_>>

Converts Rust value to SQLite value
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impl StructuralPartialEq for Value

Auto Trait Implementations§

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impl Freeze for Value

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impl RefUnwindSafe for Value

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impl Send for Value

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impl Sync for Value

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impl Unpin for Value

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impl UnwindSafe for Value

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes

Size for each variant:

  • Null: 0 bytes
  • Integer: 8 bytes
  • Real: 8 bytes
  • Text: 24 bytes
  • Blob: 24 bytes