turngate 0.1.0

Prevent or reduce abuse of your public service
Documentation 
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use super::{Interaction, Label, Stats, Visit};
use std::collections::HashMap;

pub struct Gate {
    visits: Vec<Visit>,
}
impl Gate {
    pub fn turn<'l>(&mut self, labels: impl IntoIterator<Item = &'l Label<'l>>) -> Interaction {
        let (visit, expectation) =
            Visit::interaction(labels.into_iter().map(|l| l.anon()).collect());
        self.visits.push(visit);
        expectation
    }
    pub fn stats(&mut self) -> HashMap<Label<'static>, Stats> {
        let mut stats = HashMap::with_capacity(self.visits.len() * 5);
        for visit in &mut self.visits {
            let counters = visit.check();
            for label in visit.labels() {
                stats
                    .entry(label)
                    .or_insert_with(|| Stats::default())
                    .add(counters);
            }
        }
        stats
    }
    pub fn count(&self) -> usize {
        self.visits.len()
    }
}