Struct ListDeleteDriver 

pub struct ListDeleteDriver {
    pub can_delete: Box<dyn Fn(usize) -> bool>,
    pub deleted: Box<dyn Fn(usize)>,
}

The delete closures the list() piece supplies (docs/list.md). Exposed to the backend as day_spec::ListDelete by the list source adapter; also driven directly by list_try_delete (the dayscript delete_row step and the mock probe).

Fields

can_delete: Box<dyn Fn(usize) -> bool>

Consult the app’s guard: may this row be deleted?

deleted: Box<dyn Fn(usize)>

Commit an accepted delete: drops the row from the piece’s snapshot + tokens synchronously and defers the app’s on_delete callback to the next event drain.