fn prefilter_state(&self) -> PrefilterState {
        if self.prefn.is_none() {
            PrefilterState::inert()
        } else {
            PrefilterState::new()
        }
    }
/// Return a fresh prefilter state that can be used with this searcher.
/// A prefilter state is used to track the effectiveness of a searcher's
/// prefilter for speeding up searches. Therefore, the prefilter state
/// should generally be reused on subsequent searches (such as in an
/// iterator). For searches on a different haystack, then a new prefilter
/// state should be used.
///
/// This always initializes a valid (but possibly inert) prefilter state
/// even if this searcher does not have a prefilter enabled.
Return a fresh prefilter state that can be used with this searcher.
A prefilter state is used to track the effectiveness of a searcher's
prefilter for speeding up searches. Therefore, the prefilter state
should generally be reused on subsequent searches (such as in an
iterator). For searches on a different haystack, then a new prefilter
state should be used.

This always initializes a valid (but possibly inert) prefilter state
even if this searcher does not have a prefilter enabled.
Return a fresh prefilter state that can be used with this searcher . A prefilter state is used to track the effectiveness of a searcher ' s prefilter for speeding up searches . Therefore the prefilter state should generally be reused on subsequent searches ( such as in an iterator ) . For searches on a different haystack then a new prefilter state should be used . This always initializes a valid ( but possibly inert ) prefilter state even if this searcher does not have a prefilter enabled .
fn prefilter_state(&self) -> PrefilterState {
        if self.prefn.is_none() {
            PrefilterState::inert()
        } else {
            PrefilterState::new()
        }
    }
fn prefilter_state ( & self ) -> PrefilterState { if self . prefn . is_none ( ) { PrefilterState :: inert ( ) } else { PrefilterState :: new ( ) } }
Return a fresh prefilter state that can be used with this searcher.
Return a fresh prefilter state that can be used with this searcher .
&self
&self