Type Alias ColumnHeaderFormatterFn 

pub type ColumnHeaderFormatterFn<'s> = Box<dyn Fn(usize) -> String + 's>;

Formatter for the column-header row above the hex/ascii panes. Receives the zero-based column index and returns its label. Default renders an uppercase hex digit.

Aliased Type

pub struct ColumnHeaderFormatterFn<'s>(/* private fields */);