Enum Modification

pub enum Modification {
    Set(DataType),
    Apply(Operation, DataType),
    None,
}

A modification to make to a column in an existing row.

Variants

Set(DataType)

Set the cell to this value.

Apply(Operation, DataType)

Use the given Operation to combine the existing value and this one.

None

Leave the existing value as-is.

Trait Implementations

impl Clone for Modification

fn clone(&self) -> Modification

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Modification

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Modification

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> From<T> for Modification

where T: Into<DataType>,

fn from(t: T) -> Modification

Converts to this type from the input type.

impl PartialEq for Modification

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

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Modification

impl StructuralPartialEq for Modification