"Tom Phoenix" <[EMAIL PROTECTED]> writes: > On 12/1/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: >> John W.Krahn <[EMAIL PROTECTED]> writes: >> > perldoc -f rewinddir >> >> Is that faster or anything than using a second opendir? > > Is it faster? What did you find out when you benchmarked both ways of coding > it?
When I started trying to test it, I couldn't get rewind to even work so rather than embarking on new mission and debugging that, I wanted to stay on the current mission and see if a knowledgable poster might know the answer off the top of his/her head. What may seem a minor debug to you experienced perl people could well have melted away the rest of my night I planned to spend getting the basic script functional. In the end I left the 2 opendir calls. > In any case, when you're reading a directory, you're reading data from > a disk; the large potential disk latency will swamp any processing > that Perl or your OS has to do, except perhaps in unusual situations. > Is it "or anything"? There's no great advantage that I can see, other > than whatever makes your algorithm easy to understand. > > Don't sweat the small stuff; let your perl binary worry about making > your programs run "fast". When someone with John's experience mentions it, there is a good chance its based on something that I would benifit from hearing. In this case, as he pointed out, it was based on my asking if it were possible. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/
