mk wrote:
Now C++ version took over twice the time to execute in comparison to
Python time!
Am I comparing apples to oranges?
Indeed. Where in Python you're passing references your C++ code produces
copies of the vector. For starters you can change the function signature to
void
Rajanikanth Jammalamadaka wrote:
Try using a list instead of a vector for the C++ version.
Well, it's even slower:
$ time slice4
real0m4.500s
user0m0.015s
sys 0m0.015s
Time of execution of vector version (using reference to a vector):
$ time slice2
real0m2.420s
user
Le Wednesday 09 July 2008 12:35:10 mk, vous avez écrit :
vectorstring move_slice(vectorstring vec, int start, int stop, int
dest)
I guess the point is to make a vector of referene to string if you don't want
to copy string objects all around but just a word for an address each time.
The
Maric Michaud wrote:
Le Wednesday 09 July 2008 12:35:10 mk, vous avez écrit :
vectorstring move_slice(vectorstring vec, int start, int stop, int
dest)
I guess the point is to make a vector of referene to string if you don't want
to copy string objects all around but just a word for an
P.S. Java 1.6 rocks - I wrote equivalent version using ArrayList and it
executed in 0.7s.
--
http://mail.python.org/mailman/listinfo/python-list
Out of curiosity I decided to make some speed comparisons of the same
algorithm in Python and C++. Moving slices of lists of strings around
seemed like a good test case.
Python code:
def move_slice(list_arg, start, stop, dest):
frag = list_arg[start:stop]
if dest stop:
Try using a list instead of a vector for the C++ version.
Raj
On Tue, Jul 8, 2008 at 3:06 PM, mk [EMAIL PROTECTED] wrote:
Out of curiosity I decided to make some speed comparisons of the same
algorithm in Python and C++. Moving slices of lists of strings around seemed
like a good test case.
mk wrote:
Out of curiosity I decided to make some speed comparisons of the same
algorithm in Python and C++. Moving slices of lists of strings around
seemed like a good test case.
If you use Python to, in effect, call well-written C functions, and most
of the computation time is spent in
