How to resolve array hash issue

Question

  my %geo_location_map = (
                             US => [ 'US', 'CA' ],
                             EU => [ 'GB', 'ES' ],

                           );
   $location= "US" ;
   my $goahead = 0;

    if (exists  $geo_location_map{US} ) {
    print "exists";
        my @glocation =  $geo_location_map{US};

    foreach @glocation { 
        if ( $_ eq "$location"} { $goahead=1; last;}  
        }
    }

I tried its not working

Please bee more specific about what is "not working". What happens, vs. what do you want to have happen? Also, you must always use strict; use warnings; in your scripts, if you wish to have perl report errors to you. — Ether
– Ether, Commented Jul 29, 2010 at 16:14

Jim Davis · Accepted Answer · 2010-07-29 15:03:12Z

4

$geo_location_map{US} contains an array reference; if you want to copy the array to @glocation you need to dereference it:

my @glocation = @{$geo_location_map{US}};

answered Jul 29, 2010 at 15:03

Jim Davis

5,3091 gold badge30 silver badges25 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

benzebuth · Accepted Answer · 2010-07-29 15:49:19Z

1

First of all, always "use strict" in your scripts. You had multiple errors. see :


my %geo_location_map = (
    US => [ 'US', 'CA' ],
    EU => [ 'GB', 'ES' ],
);
my $location= "US" ;
my $goahead = 0;

if (exists  $geo_location_map{US} ) {
    print "exists";
    my @glocation =  $geo_location_map{US};

    foreach (@glocation) {

        if ( $_->[0] eq "$location") {
            print "ahead\n";
                        $goahead=1;
            last;
        }
    }
}

As jim davis said, you had ann array ref. Moreover, some bracket errors, no big deal

edited Jul 29, 2010 at 15:49

answered Jul 29, 2010 at 15:39

benzebuth

6953 silver badges11 bronze badges

Collectives™ on Stack Overflow

How to resolve array hash issue

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related