Re: number of keys and values in a hash

Updated: sorry the former was duplicated, deleted now:

normally the number of keys = number of values, if a value is missing is filled automatically, if a value is undef is not printed, but you still can call it. If you need to discard the null values you can always add a test or if-block

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Re^2: number of keys and values in a hash by veerubiji (Sexton) on Oct 11, 2011 at 14:47 UTC
hi Its not working, it giving only one number is there but i have 148 numbers.can you tel me how to create hash table in my code.	[reply]
Re^3: number of keys and values in a hash by pvaldes (Chaplain) on Oct 11, 2011 at 15:05 UTC
well, of course you will need to create and fill a hash first with the desired part of your data. The code tells you exactly what you have: `my %nums =( "$number", $info)` is a hash with one element only, a single pair key-value. You need to iterate between all keys and all values	[reply] [d/l]
Re^4: number of keys and values in a hash by pvaldes (Chaplain) on Oct 11, 2011 at 15:47 UTC
Some extra notes about your code: `while (my ($keys, $values) = each %nums) {` is probably a little more readable than `while ((my $keys, my $values) = each (%nums)) {` and you could prefer also to use `open my $file, 'formal.xml';` instead: `my $file;open $file, 'formal.xml');` and `print "num: $number\n";` instead: `print( "num: $number\n" );`	[reply] [d/l] [select]
Re^4: number of keys and values in a hash by veerubiji (Sexton) on Oct 12, 2011 at 07:06 UTC
Hi, exactly what i am thinking is i need to fill my hash with more number of elements. now in the above code i have only one element in hash so its displaying one key.i need to iterate all keys and vaues in my hash.can you help how can i iterate all keys in my hash.	[reply]