Trait mem_query::header::HasCol

pub trait HasCol<C: Col> {
    type Index;
}

Finds the location of a column within a Header, and returns its index.

Associated Types

type Index

Implementors

impl<C: Col, H: Header> HasCol<C> for H where
    HCons<Is, HCons<Missing, HCons<HCons<Find, HCons<Quote<C>, HCons<Quote<H>, HNil>>>, HNil>>>: Fail,
    HCons<Find, HCons<Quote<C>, HCons<Quote<H>, HNil>>>: Eval,
    Self: Take<<HCons<Find, HCons<Quote<C>, HCons<Quote<H>, HNil>>> as Eval>::Result, Taken = C>, 

type Index = <HCons<Find, HCons<Quote<C>, HCons<Quote<H>, HNil>>> as Eval>::Result