Is my value in hash keys ? 1

[MoshiachNow]

HI,

I need to check if $PID2 is anywhere in keys of hash %$existing.
Can I use something like :
unless ($PID2 in keys %$existing) {

instead of looping each time :

for (keys %$existing) {
if ($PID2 eq $_) {

?
thanks

Long live king Moshiach !

http://www.noahide.com

 

[stevexff]

You can use the grep function.

Steve

[small]"Every program can be reduced by one instruction, and every program has at least one bug. Therefore, any program can be reduced to one instruction which doesn't work." (Object:erlDesignPatterns)[/small]

 

[ChrisHunt]

Try this (not tested):

if (exists $existing->{$PID2}) {
   print "It exists\n";
}

-- Chris Hunt
Webmaster & Tragedian
Extra Connections Ltd

 

[rharsh]

As long as $existing{$PID2} has a non-zero value, you can do it with:

if ($existing{$PID2}) {
  # It exists
} else {
  # It doesn't exist
}

 

[ishnid]

The method ChrisHunt suggests is the correct one to use.

 

[MoshiachNow]

Great,thanks !

Long live king Moshiach !

http://www.noahide.com