> my $random_key = ( keys %tips )[ rand keys %tips ]; > Can anyone parse this line for me?
Picking up a random key from the keys of a hash. see perldoc -f rand >>One more thing - I don't seem to have perldoc installed, I simply look up >>the functions in the info node `perlfunc'. Am I missing something? perldoc is not a function but a utility. try "perldoc perldoc". -Sharad -----Original Message----- From: Abhijit Shylanath [mailto:[EMAIL PROTECTED] Sent: Friday, June 20, 2003 11:33 AM To: Dan Muey Cc: Perl Beginners Subject: RE: Removing entries from an array > Well you could actually put them in a hash with a number as the key and > the tip as th evalue then undefine the value of a key once it's used. Won't that be an unnecesary waste of memory and clock cycles? How efficient are the Perl hashing routines anyway? > my $random_key = ( keys %tips )[ rand keys %tips ]; Can anyone parse this line for me? One more thing - I don't seem to have perldoc installed, I simply look up the functions in the info node `perlfunc'. Am I missing something? -- Abhijit Shylanath Homepage: http://mudeth.tripod.com/ -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
