On 06/22/2014 04:01 PM, Sunita Pradhan wrote:
I have following code for printing a simple hash.#!/usr/bin/perl -w %hash = ("abc" => 123, "dfg" => 456, "xsd" => 34); foreach $k (keys %hash){ print "key $k:: value $hash{$k}\n"; } It does not print keys and displays following warnings: -------------- Use of uninitialized value $k:: in concatenation (.) or string at hash_test2.pl line 7.
your bug is putting ::after the $k. that makes it a package variable in the k:: namespace and there is nothing there. remove the :: or use some other marker or a space before the ::.
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