Trait RowIndex

pub trait RowIndex<I> {
    // Required method
    fn idx(&self, idx: I) -> Option<usize>;
}

Representing a way to index into database rows

• Crates using existing backends should use existing implementations of this traits. Diesel provides RowIndex<usize> and RowIndex<&str> for all built-in backends

• Crates implementing custom backends need to provide RowIndex<usize> and RowIndex<&str> impls for their Row type.

Required Methods

fn idx(&self, idx: I) -> Option<usize>

Get the numeric index inside the current row for the provided index value

Implementors

impl<'a, R> RowIndex<&'a str> for PartialRow<'_, R>

where R: RowIndex<&'a str>,

impl<R> RowIndex<usize> for PartialRow<'_, R>

where R: RowIndex<usize>,