I tried using \&CheckDate, and it runs, but from my debug version of the sub CheckDate below, $date is printed as null , i.e. nothing is being passed in. If I use \&CheckDate($_), it gives the error message in the -require. 
sub CheckDate {
        my $date = shift @_;

        print "Date: $date\n";
        return true;
}

[download]
Looking at the example, it seems I may have to use an anonymous subroutine instead? I figured it would be better for maintainability and reuse if I put in a separate CheckDate sub. That said, I tried putting it an anoymous sub, and get the following, which is always valid, even when I enter a **invalid** date (e.g. asagfas): 
-require=>{
                                        "Must be in the format (two di
+gits per value) of MM/DD/YY: "
                                        #=> \&CheckDate($_)
                                        => sub {return (ParseDate($_))
+ ? true : false }
                                        #=> sub {return true }
                                        }

[download]
What am I missing here?

-- Burvil

In reply to Re^2: Passing entered value into sub for IO::Prompt by bowei_99
in thread Passing entered value into sub for IO::Prompt by bowei_99

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