How to test if a value exist in a hash?

Question

Let\'s say I have this

#!/usr/bin/perl

%x = (\'a\' => 1, \'b\' => 2, \'c\' => 3);

and I would like to know if the value 2 is a ha

Answer 1

grep and values

my %x = ('a' => 1, 'b' => 2, 'c' => 3); 

if (grep { $_ == 2 } values %x ) {
    print "2 is in hash\n";
}
else {
    print "2 is not in hash\n";
}

See also: perldoc -q hash