------------------------------------------------ On Tue, 30 Sep 2003 12:58:21 -0400, Dan Anderson <[EMAIL PROTECTED]> wrote:
> I have a long list of IP addresses I am going to be reading in (using > regexps) and then seperating out into a list of IP addresses. I don't > want the IP addresses to be printed if they are not unique. > > Is there a way to check if a string already has an element in a stack? > > i.e. push @stack, $_ if is_unique($_, @stack); ? > > Or would I have to code that myself? > In general this is best handled with a hash, using the keys as the unique string (perldoc -f exists), but in the case this must be an array (not sure of one), perldoc -f grep ... using grep you should be able to create is_unique with one expression... http://danconia.org -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
