public bool MoveNext()
{
if (UniqueSecondItems.IsDefaultValue())
{
Container.Initialize();
UniqueSecondItems.Initialize();
while (SecondInner.MoveNext())
{
UniqueSecondItems.Add(SecondInner.Current, ref Container);
}
AlreadyYielded.Initialize();
}
while (FirstInner.MoveNext())
{
var cur = FirstInner.Current;
int existingValueIndex;
if (UniqueSecondItems.Contains(cur, ref Container, out existingValueIndex))
{
if (AlreadyYielded.AddByIndex(existingValueIndex, ref Container))
{
Current = cur;
return(true);
}
}
}
return(false);
}
public bool MoveNext()
{
if (AlreadyYielded.IsDefaultValue())
{
AlreadyYielded.Initialize();
Container.Initialize();
}
if (!FirstFinished)
{
while (FirstInner.MoveNext())
{
var cur = FirstInner.Current;
if (AlreadyYielded.Add(cur, ref Container))
{
Current = cur;
return(true);
}
}
FirstFinished = true;
}
while (SecondInner.MoveNext())
{
var cur = SecondInner.Current;
if (AlreadyYielded.Add(cur, ref Container))
{
Current = cur;
return(true);
}
}
return(false);
}
public bool MoveNext()
{
if (AlreadyYielded.IsDefaultValue())
{
AlreadyYielded.Initialize();
Container.Initialize();
while (SecondInner.MoveNext())
{
AlreadyYielded.Add(SecondInner.Current, ref Container, Comparer);
}
}
while (FirstInner.MoveNext())
{
var cur = FirstInner.Current;
if (AlreadyYielded.Add(cur, ref Container, Comparer))
{
Current = cur;
return(true);
}
}
return(false);
}
public bool MoveNext()
{
if (PreviouslyYielded.IsDefaultValue())
{
PreviouslyYielded.Initialize();
Container.Initialize();
}
while (Inner.MoveNext())
{
var cur = Inner.Current;
if (PreviouslyYielded.Add(cur, ref Container))
{
Current = cur;
return(true);
}
}
return(false);
}
