Python and STL efficiency

[Tim N. van der Leeuw]

Ray wrote:
> Fredrik Lundh wrote:
> > in the Python example, the four strings in your example are shared, so
> > you're basically copying 40000 pointers to the list.
> >
> > in the C++ example, you're creating 40000 string objects.
> >
> > </F>
>
> In which case, Licheng, you should try using the /GF switch. This will
> tell Microsoft C++ compiler to pool identical string literals together.
>
>
> :)

The code still creates a new string - instance each time it tries to
append a const char* to the vector<string> ...

You should instead create the string-objects ahead of time, outside of
the loop.

Regards,

--Tim