[−][src]Crate keylist
Map like wrapper around a list with tuple pairs. Inspired by Elixir's Keyword lists.
Because it is just a list with tuples, keys can be anything that can be put in a tuple. Also means that getting a value is not efficient.
For something more usefull and quite similar take a look at: https://docs.rs/multimap
use keylist::Keylist; let mut keylist = Keylist::from(vec![("a", 5), ("b", 2), ("a", 1)]); assert_eq!(keylist.get(&"a"), Some(&5)); keylist.sort_by_value(); assert_eq!(keylist.get(&"a"), Some(&1)); keylist.push("z", 26); assert_eq!(keylist.get(&"z"), Some(&26)); keylist.insert(1, "z", 2); assert_eq!(keylist.get(&"z"), Some(&2)); assert_eq!(keylist.get_all(&"z"), vec![&2, &26]); assert_eq!(keylist.get_key_value(&"b"), Some(&("b", 2))); let mut swapped_keylist = keylist.into_swapped(); assert_eq!(swapped_keylist.get(&2), Some(&"z")); assert_eq!(swapped_keylist.get_all(&2), vec![&"z", &"b"]); swapped_keylist.sort(); assert_eq!(swapped_keylist.get_all(&2), vec![&"b", &"z"]); swapped_keylist.extend(vec![(3, "b"), (2, "g")]); assert_eq!(swapped_keylist.get_all(&2), vec![&"b", &"z", &"g"]);
Convert keylist to map and back:
use std::collections::HashMap; use std::iter::FromIterator; use keylist::Keylist; let keylist = Keylist::from(vec![("a", 5), ("b", 2), ("c", 1)]); let mut map = HashMap::new(); map.extend(vec![("a", 5), ("b", 2), ("c", 1)]); let map_from_keylist = HashMap::from_iter(keylist.clone()); let mut keylist_from_map = Keylist::from_iter(map.clone()); keylist_from_map.sort(); assert_eq!(map, map_from_keylist); assert_eq!(keylist, keylist_from_map);
Arbitrary example:
use keylist::Keylist; let mut keylist = Keylist::new(); keylist.push(vec![3.12, 0.12], "a"); keylist.push(vec![0.1235, 34.121551], "c"); assert_eq!(keylist.get(&vec![0.1235, 34.121551]), Some(&"c"));
Structs
Keylist |