Enum ColumnRef 

pub enum ColumnRef {
    Index(usize),
    Name(String),
}

Reference to a column

Variants

Index(usize)

Column by index

Name(String)

Column by name

Implementations

impl ColumnRef

pub fn resolve(&self, columns: &[String]) -> Option<usize>

Resolve to an index given a column name mapping

Trait Implementations

impl Clone for ColumnRef

fn clone(&self) -> ColumnRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnRef

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

Formats the value using the given formatter.