Erich Beyrent
wrote, on Wed 12/1/2004 11:39
: > : I have the following data structure:
: > :
: > : $hash{$connid} = {"month" => $month,
: > : "day" => $day,
: > : "time" => $time,
: > : "user" => $user,
: > : "host" => $host,
: > : "from_ip" => $from_ip,
: > : };
: > :
: > : The time (where time is in hh:mm:ss format) and there could be a few
entries
: > : with the same user and same timestamp - I only wish to display the first
: > : one.
: > :
: > : So this works just fine. The problem is that I need to also sort the
: > : results by month, day, and time. It looks as if the month and day fields
: > : are sorting, but not the time field, and I am unsure as to how to sort
: > this.
: >
: > What do you mean by "not the time field?" Perhaps you need to use "cmp"
: > instead of "<=>" (maybe you are; you :
: > didn't show any sorting code!) since there are embedded colons, or you
: > need to make sure your hours before 10
: > have leading zeros so they sort correctly ("hh:mm:ss" implies that they
: > already do, but maybe you didn't mean
: > that).
: >
: > Joe
:
: Sorry for not being specific enough. The data gets displayed with the times
: in no particular order. I might have:
:
: 10:02:34
: 06:05:01
: 09:00:01
:
: Etc. I agree that cmp would have to be used instead of <=>, but I am not
: sure as to how to implement this kind of sort on a single hash key when I am
: doing a foreach loop on all the keys. Any assistance would be greatly
: appreciated!
: > : I have the following data structure:
: > :
: > : $hash{$connid} = {"month" => $month,
: > : "day" => $day,
: > : "time" => $time,
: > : "user" => $user,
: > : "host" => $host,
: > : "from_ip" => $from_ip,
: > : };
: > :
: > : The time (where time is in hh:mm:ss format) and there could be a few
entries
: > : with the same user and same timestamp - I only wish to display the first
: > : one.
: > :
: > : So this works just fine. The problem is that I need to also sort the
: > : results by month, day, and time. It looks as if the month and day fields
: > : are sorting, but not the time field, and I am unsure as to how to sort
: > this.
: >
: > What do you mean by "not the time field?" Perhaps you need to use "cmp"
: > instead of "<=>" (maybe you are; you :
: > didn't show any sorting code!) since there are embedded colons, or you
: > need to make sure your hours before 10
: > have leading zeros so they sort correctly ("hh:mm:ss" implies that they
: > already do, but maybe you didn't mean
: > that).
: >
: > Joe
:
: Sorry for not being specific enough. The data gets displayed with the times
: in no particular order. I might have:
:
: 10:02:34
: 06:05:01
: 09:00:01
:
: Etc. I agree that cmp would have to be used instead of <=>, but I am not
: sure as to how to implement this kind of sort on a single hash key when I am
: doing a foreach loop on all the keys. Any assistance would be greatly
: appreciated!
So you want something like
this?
foreach (sort {
$hash{$a}{'month'} <=> $hash{$b}{'month'} ||
$hash{$a}{'day'} <=> $hash{$b}{'day'}
||
$hash{$a}{'time'} cmp $hash{$b}{'time'} } keys
%hash)
{
# do
stuff
}
Have I missed something in
what you're doing? I'm afraid I no longer have your original message with your
"do stuff" loop.
Joe
==============================================================
Joseph P. Discenza, Sr. Programmer/Analyst
mailto:[EMAIL PROTECTED]
Carleton Inc. http://www.carletoninc.com
574.243.6040 ext. 300 fax: 574.243.6060
Providing Financial Solutions and Compliance for over 30 Years
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