[Chicago-talk] finding *any* defined elements of a hash

[Andy Lester]

> On Aug 5, 2015, at 1:01 PM, Richard Reina <gatorreina at gmail.com> wrote:
> 
> my $input_hash = {  
>        
>        FName => param('firstname'),  
>        LName => param('lastname'),
>        Email => param('email'),
> 
>    };
>    
> Can I check to see if any of the hash's element is defined without checking all the elements as the hash could grow in the future as the fields of the form grow.


grep through the values and check their count.

my $number_of_defined_values = scalar grep { defined } values %{$input_hash};

--
Andy Lester => www.petdance.com

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