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Re: Need some help with Hashes and formatting

by farang (Chaplain)
on Jun 25, 2014 at 03:01 UTC ( #1091120=note: print w/ replies, xml ) Need Help??


in reply to Need some help with Hashes and formatting

This statement
printf "%10s\t=>%10s\n" x @ky, @ky, @vals;
is first outputting all keys, then all values. Here's an alternative without the intermediate arrays, using the defined or operator // to avoid a warning on an undef value.

#!/usr/bin/env perl use strict; use warnings; my %hash = ("fred" => "flintstone", "dino" => undef, "barney" => "rubble", "betty" => "rubble", ); printf "%10s\t=>%10s\n", "keys", "values"; for ( keys %hash ) { printf "%10s\t=>%10s\n", $_, $hash{$_} // ''; }


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