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// Copyright (c) 2015-2016 lcov-parser developers
//
// Licensed under the Apache License, Version 2.0
// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. All files in the project carrying such notice may not be copied,
// modified, or distributed except according to those terms.

use std::collections::btree_map:: { Iter };

pub trait Summary<K, V> {
    fn iter(&self) -> Iter<K, V>;
    fn contains_key(&self, k: &K) -> bool;
    fn get(&self, key: &K) -> Option<&V>;
    fn len(&self) -> usize;
    fn is_empty(&self) -> bool {
        self.len() <= 0
    }
}