Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW

Re: Recursion

by TheoPetersen (Priest)
on Aug 03, 2001 at 02:35 UTC ( #101813=note: print w/replies, xml ) Need Help??

in reply to Recursion

You could also implement this with an array, instead of a recursive sub:
opendir(ROOT_DIR,"/")|| die "Error:$!\n"; my @todo = grep {$_ ne '..'} readdir(ROOT_DIR); closedir(ROOT_DIR); while (my $what = shift @todo) { if (-f $what){ log_sbit($what) if (-u $what || -g $what); } elsif (-d $what && opendir(SUB_DIR, $what){ push @todo, map {"$what/$_"} grep {$_ ne '..'} readdir(SUB_DIR); closedir(SUB_DIR); } }
Untested but perhaps you'll like the approach and work things out. Remember to build full paths each time (that's what the map would be doing if this were working code). When you finally run out of @todo elements you've searched everything.

And I can't resist: for more information on recursion, see Recursion.

Replies are listed 'Best First'.
Re: Re: Recursion
by dataDrone (Acolyte) on Aug 03, 2001 at 05:39 UTC
    You know, I must have followed that Link for More Info at least twenty times and i never saw anything new...
      Ah, but each time you saw it, you had the knowledge gained from all the previous times and hence an ever deeper understanding.


Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://101813]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others romping around the Monastery: (10)
As of 2018-03-23 20:49 GMT
Find Nodes?
    Voting Booth?
    When I think of a mole I think of:

    Results (296 votes). Check out past polls.