/// <summary>
/// Add a value to the dictionary.
/// </summary>
public void Add(K k, V v)
{
object item;
if (!this.IsEmpty && _dictionary.TryGetValue(k, out item))
{
var arrayBuilder = item as ArrayBuilder <V>;
if (arrayBuilder == null)
{
// Promote from singleton V to ArrayBuilder<V>.
Debug.Assert(item is V, "Item must be either a V or an ArrayBuilder<V>");
arrayBuilder = new ArrayBuilder <V>(2);
arrayBuilder.Add((V)item);
arrayBuilder.Add(v);
_dictionary[k] = arrayBuilder;
}
else
{
arrayBuilder.Add(v);
}
}
else
{
this.EnsureDictionary();
_dictionary[k] = v;
}
}
public void Add(K k, V v)
{
if (_dictionary is object && _dictionary.TryGetValue(k, out var valueSet))
{
Debug.Assert(valueSet.Count >= 1);
// Have to re-store the ValueSet in case we upgraded the existing ValueSet from
// holding a single item to holding multiple items.
_dictionary[k] = valueSet.WithAddedItem(v);
}
else
{
this.EnsureDictionary();
_dictionary ![k] = new ValueSet(v);