public ImmutableHashMap <TKey, TValue> WithComparers(IEqualityComparer <TKey> keyComparer,
IEqualityComparer <TValue> valueComparer)
{
if (keyComparer == null)
{
keyComparer = EqualityComparer <TKey> .Default;
}
if (valueComparer == null)
{
valueComparer = EqualityComparer <TValue> .Default;
}
if (_keyComparer == keyComparer)
{
if (_valueComparer == valueComparer)
{
return(this);
}
else
{
return(new ImmutableHashMap <TKey, TValue>(_root, _keyComparer, valueComparer));
}
}
else
{
var set = new ImmutableHashMap <TKey, TValue>(keyComparer, valueComparer);
set = set.AddRange(this, overwriteOnCollision: false, avoidToHashMap: true);
return(set);
}
}
