/// <summary>
/// Adds a key/value pair to the lookup
/// </summary>
/// <remarks>If the value is already present it will be duplicated</remarks>
public void Add([NotNull] TKey key, TElement value)
{
if (!_groups.TryGetValue(key, out LookupGrouping group))
{
group = new LookupGrouping(key);
_groups.Add(key, group);
}
group.Add(value);
}
/// <summary>
/// Adds a key/value pair to the lookup
/// </summary>
/// <remarks>If the value is already present it will be duplicated</remarks>
public void Add(TKey key, TElement value)
{
LookupGrouping group;
if (!groups.TryGetValue(key, out group))
{
group = new LookupGrouping(key);
groups.Add(key, group);
}
group.Add(value);
}
/// <summary>
/// Adds a range of values against a single key
/// </summary>
/// <remarks>Any values already present will be duplicated</remarks>
public void AddRange([NotNull] TKey key, [NotNull] IEnumerable <TElement> values)
{
if (!_groups.TryGetValue(key, out LookupGrouping group))
{
group = new LookupGrouping(key);
_groups.Add(key, group);
}
foreach (TElement value in values)
{
group.Add(value);
}
if (group.Count == 0)
{
_groups.Remove(key); // nothing there after all!
}
}
/// <summary>
/// Adds a range of values against a single key
/// </summary>
/// <remarks>Any values already present will be duplicated</remarks>
public void AddRange(TKey key, IEnumerable <TElement> values)
{
values.ThrowIfNull("values");
LookupGrouping group;
if (!groups.TryGetValue(key, out group))
{
group = new LookupGrouping(key);
groups.Add(key, group);
}
foreach (TElement value in values)
{
group.Add(value);
}
if (group.Count == 0)
{
groups.Remove(key); // nothing there after all!
}
}