Looping through Perl data types


+hash+

http://stackoverflow.com/questions/3033/whats-the-safest-way-to-iterate-through-the-keys-of-a-perl-hash

bc. % perldoc -f keys
% perldoc -f each


If you just want the keys and do not plan to ever read any of the values, use keys():

@foreach my $key (keys %hash) { ... }@


If you just want the values, use values():

@foreach my $val (values %hash) { ... }@


If you need the keys and the values, use each():

bc. keys %hash; # reset the internal iterator so a prior each() doesn't affect the loop
while(my($k, $v) = each %hash) { ... }


 #programming - #perl