void internalflush()
{
if ( pc != pa )
{
COS.write(
reinterpret_cast<char const *>(pa),
(pc-pa)*sizeof(GraphEdge)
);
pc = pa;
}
}
void internalflush()
{
if ( pc != pa )
{
std::sort(pa,pc);
COS.write(
reinterpret_cast<char const *>(pa),
(pc-pa)*sizeof(GraphEdge)
);
blocksizes.push_back(pc-pa);
pc = pa;
}
}