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TableView

antecedent_data::table

Trait TableView 

Source 
pub trait TableView {
    // Required methods
    fn schema(&self) -> &CausalSchema;
    fn row_count(&self) -> usize;
    fn column(&self, id: VariableId) -> Result<ColumnView<'_>, DataError>;

    // Provided methods
    fn float64_slice(&self, id: VariableId) -> Result<&[f64], DataError> { ... }
    fn float64_cow(&self, id: VariableId) -> Result<Cow<'_, [f64]>, DataError> { ... }
    fn float64_values(&self, id: VariableId) -> Result<Vec<f64>, DataError> { ... }
}
Expand description

Borrowed table access used by algorithms.

Required Methods§

Source

fn schema(&self) -> &CausalSchema

Immutable causal schema.

Source

fn row_count(&self) -> usize

Number of rows.

Source

fn column(&self, id: VariableId) -> Result<ColumnView<'_>, DataError>

Column view for id.

§Errors

Unknown variable or type issues.

Provided Methods§

Source

fn float64_slice(&self, id: VariableId) -> Result<&[f64], DataError>

Borrow a native Float64 column as a contiguous slice (no allocation).

Unlike TableView::float64_values, no coercion is attempted: Int64 and Boolean columns error so callers stay on the copying path for them. Use TableView::float64_cow to get borrowed-when-possible semantics with the same values as float64_values.

§Errors

Unknown variable or non-Float64 column type.

Source

fn float64_cow(&self, id: VariableId) -> Result<Cow<'_, [f64]>, DataError>

Column values as f64, borrowed when the column is native Float64.

Yields exactly the same values as TableView::float64_values (including the Int64/Boolean coercions), but avoids the copy for native Float64 columns.

§Errors

Unknown variable or unsupported column type.

Source

fn float64_values(&self, id: VariableId) -> Result<Vec<f64>, DataError>

Copy a column into an owned f64 buffer.

Native Float64 columns are copied as-is. Int64 and Boolean columns are coerced to f64 (true → 1.0, false → 0.0); invalid rows become NaN. Other column kinds (categorical, timestamp, fixed vector) error.

§Errors

Unknown variable or unsupported column type.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§