public BidirectionalDictionary(int capacity, IEqualityComparer <TKey> keyComparer, IEqualityComparer <TValue> valueComparer)
{
if (capacity < 0)
{
throw new ArgumentOutOfRangeException("capacity", capacity, "capacity cannot be less than 0");
}
this.keyComparer = keyComparer ?? EqualityComparer <TKey> .Default;
this.valueComparer = valueComparer ?? EqualityComparer <TValue> .Default;
keysToValues = new Dictionary <TKey, TValue>(capacity, this.keyComparer);
valuesToKeys = new Dictionary <TValue, TKey>(capacity, this.valueComparer);
inverse = new BidirectionalDictionary <TValue, TKey>(this);
}
public BidirectionalDictionary(IReadOnlyDictionary <TKey, TValue> dictionary)
{
if (dictionary == null)
{
throw new ArgumentNullException(nameof(dictionary));
}
this.keyComparer = keyComparer ?? EqualityComparer <TKey> .Default;
this.valueComparer = valueComparer ?? EqualityComparer <TValue> .Default;
this.keysToValues = new Dictionary <TKey, TValue> (dictionary.Count, this.keyComparer);
this.valuesToKeys = new Dictionary <TValue, TKey> (dictionary.Count, this.valueComparer);
this.inverse = new BidirectionalDictionary <TValue, TKey> (this);
foreach (var kvp in dictionary)
{
this.keysToValues.Add(kvp.Key, kvp.Value);
this.valuesToKeys.Add(kvp.Value, kvp.Key);
}
}