public virtual TValue this[[NotNull] TKey key]
{
get
{
return(Base[key]);
}
set
{
if (key is null)
{
throw new ArgumentNullException(nameof(key));
}
if (value is null)
{
throw new ArgumentNullException(nameof(value));
}
Boolean valueRemoved = Reversed.Remove(value, out TKey rKey);
Boolean keyRemoved = Base.Remove(key, out TValue rValue);
if (valueRemoved)
{
Base.Remove(rKey);
}
if (keyRemoved)
{
Reversed.Remove(rValue);
}
Base[key] = value;
Reversed[value] = key;
}
}
public virtual Boolean Remove([NotNull] TKey key, [NotNull] TValue value)
{
if (!Contains(key, value))
{
return(false);
}
Boolean removed = Base.Remove(key);
if (removed ^ Reversed.Remove(value))
{
throw new CollectionSyncException();
}
return(removed);
}
public ImmutableMap <TKey, TValue> Remove(TKey key, TValue value)
{
return(new ImmutableMap <TKey, TValue>(Base.Remove(key), Reversed.Remove(value)));
}
public ImmutableMap <TKey, TValue> RemoveByValue(TValue key)
{
return(Reversed.ContainsKey(key) ? new ImmutableMap <TKey, TValue>(Base.Remove(Reversed[key]), Reversed.Remove(key)) : this);
}
public ImmutableMap <TKey, TValue> Remove(TKey key)
{
return(Base.ContainsKey(key) ? new ImmutableMap <TKey, TValue>(Base.Remove(key), Reversed.Remove(Base[key])) : this);
}