Respected Monks,

The code given below is something I've written as a test. 

use strict;
use warnings;
use diagnostics;

my @nums = (17, 10, 20, 33, 30, 40, 10, 33, 40, 15, 16, 17);

my %unordered = map { $_ => undef } @nums;

my @un_nums = join " ", keys %unordered; 
print "@un_nums\n";

[download]

And it seems to work fine. 

D:\perlscripts>perl test.pl
30 17 33 10 40 15 16 20

[download]

I'll be using this in a script to gather some information, therefore kindly let me know if 1) It's ok to use a join on a hash? 2) It's ok to collect the output of a join as an array context? Or is this a bad practice? Any side effects?

In reply to Is it safe to use join on a hash? by pritesh_ugrankar

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