Struct ColumnMeta 

pub struct ColumnMeta {
    pub description: Option<String>,
    pub context: Option<String>,
    pub dtype: Option<String>,
    pub unit: Option<String>,
}

Per-column documentation for humans and AI agents.

• description — short label (1–2 lines)
• context — longer intent, units, lineage, caveats (agent-oriented)

Fields

description: Option<String>

context: Option<String>

dtype: Option<String>

Optional logical type hint (utf8, int64, float64, timestamp, …).

unit: Option<String>

Optional unit (USD, shares, ratio, ns_epoch, …).

Trait Implementations

impl Clone for ColumnMeta

fn clone(&self) -> ColumnMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnMeta

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

Formats the value using the given formatter.

impl Default for ColumnMeta

fn default() -> ColumnMeta

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ColumnMeta

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ColumnMeta

impl PartialEq for ColumnMeta

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ColumnMeta

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 ColumnMeta