Hi Guys,
I was just wondering if anyone knows the answer to this question i got asked in an interview yesterday:
what makes c++ faster than perl?
I dont have very much knowledge of perl but i would have thought that perl was faster in some circumstances. Does anyone know in what circumstances c++ would be faster?
Thanks,
Kev
Funny, I thought perl was faster than C++.
Well it is if you include the time it takes to write the program as well as the time it takes to run the program.
People who get hung up on spending weeks trying to get the last millisecond of performance out of a program which only runs for a few seconds anyway miss the point IMO.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
maybe because PERL is interpreted and C++ is compiled?
AFAIK, PERL was never intened to be the best... just to make things easier...
http://en.wikipedia.org/wiki/Perl
http://en.wikipedia.org/wiki/C_Plus_Plus
Last edited by major_small; 08-13-2005 at 03:11 AM.
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c++ is compiled into machine understandable code, faster for execution.
perl is interpreted / compiled on the fly, making it slower at execution
perl is faster in development, the compile stage isn't there.
the debug is for exactly the code you used, no compiler optimisations.
it's more a matter of what is the purpose of the application as to which is better.
for a bash script or cgi, perl is often a better choice than c++.
Originally Posted by Jeff Henager
excellent... thanks for that!
what answer did you give?
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I said that... "my knowledge of perl is minimal but I would assume that it is faster in some cases beacuse it is an object oriented language... but I was on the spot and i didn't really know... i dont think that was a good answer.
perl does do some optimisations.
At the very least, it considers inlining functions that take no arguments.
ahh, I didn't know that, but then I don't really know perl all that well.
close to not at all actually.
