public T Next()
{
if (_first)
{
for (int i = 0; i < _count; ++i)
{
_source.Next();
}
_first = false;
}
return(_source.Next());
}
public TResult Next()
{
while (true)
{
if (_source.Next() is TResult res)
{
return(res);
}
}
}
public T Next()
{
if (!HasNext())
{
throw new InvalidOperationException();
}
++_count;
return(_source.Next());
}
public T Next()
{
while (true)
{
T temp = _source.Next();
if (_predicate(temp))
{
return(temp);
}
}
}
public TR Next() => _func(_yielderA.Next(), _yielderB.Next());
public TResult Next() => _fun(_source.Next());