Version 0.1.0

Initial publication. Created DHashmap data structure, and add some methods to it¹:

• new: creates a new empty DHashMap;
• with_capacity: creates an empty DHashMap with the specified capacity;
• with_hasher: creates an empty DHashMap which will use the given hash builder to hash keys;
• with_capacity_and_hasher: creates an empty DHashMap with the specified capacity, using hash_builder to hash the keys;
• capacity: returns the number of elements the map can hold without reallocating;
• len: returns the number of elements in the map.;
• is_empty: returns true if the map contains no elements;
• clear: clears the map, removing all keys-value tuples (K1, K2, V). Keeps the allocated memory for reuse;
• hasher: returns a reference to the map's BuildHasher;
• reserve: reserves capacity for at least additional more elements;
• try_reserve: tries to reserve capacity for at least additional more elements;
• shrink_to_fit: shrinks the capacity of the map as much as possible;
• shrink_to: shrinks the capacity of the map with a lower limit;
• entry: tries to gets the given keys' corresponding entry in the map for in-place manipulation. Return error if primary K1 key or secondary K2 not both vacant or exist and refers to the same value. Given keys returned inside error structure.
• get_key1: returns a reference to the value corresponding to the given primary key (K1);
• get_key2: returns a reference to the value corresponding to the given secondary key (K2);
• get_mut_key1: returns a mutable reference to the value corresponding to the given primary key (K1);
• get_mut_key2: returns a reference to the value corresponding to the given secondary key (K2);
• insert_unchecked: insert keys-value tuple (K1, K2, V) into the map without checking that primary K1 key or secondary K2 key vacant or exist in map and refers to the same value.
• insert: insert keys-value tuple (K1, K2, V) into the map (K1, K2, V) with checking that primary K1 key or secondary K2 key vacant or exist in map and refers to the same value. Return error if its failure. Given keys and value returned inside error structure.
• try_insert: tries insert keys-value tuple (K1, K2, V) into the map if they vacant and returning error if any of keys or both keys exist in the map. Given value or value and keys together returned inside error enum (depends error type).
• remove_key1: remove element from map corresponding to the given primary key (K1);
• remove_key2: remove element from map corresponding to the given secondary key (K2).

1. The K1, K2, V abbreviations means: K1 - a primary key of type K1; K2 - a secondary key of type K2; V - a value of type K2. ↩