Struct CsvSchema 

pub struct CsvSchema {
    pub columns: Vec<(String, ColumnType)>,
}

A schema definition for a CSV file: each column has a name and expected type.

Fields

columns: Vec<(String, ColumnType)>

Ordered column definitions.

Implementations

impl CsvSchema

pub fn new(columns: Vec<(String, ColumnType)>) -> Self

Create a schema from paired (name, type) entries.

pub fn len(&self) -> usize

Number of columns in this schema.

pub fn is_empty(&self) -> bool

Returns true if the schema has no columns.

pub fn validate(&self, csv: &CsvFile) -> Vec<String>

Validate that a CsvFile matches this schema.

Checks column count and, for numeric types, that every value in the column parses successfully. Returns a list of human-readable error messages (empty if valid).

Trait Implementations

impl Clone for CsvSchema

fn clone(&self) -> CsvSchema

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CsvSchema

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

Formats the value using the given formatter.