Function column 

pub fn column<'a, 'b, T, E, Message, Theme, Renderer>(
    header: impl Into<Element<'a, Message, Theme, Renderer>>,
    view: impl Fn(T) -> E + 'b,
) -> Column<'a, 'b, T, Message, Theme, Renderer>
where
    T: 'a,
    E: Into<Element<'a, Message, Theme, Renderer>>,

Creates a new Column with the given header and view function.

The view function will be called for each row in a Table and it must produce the resulting contents of a cell.