The above solutions rely on interpreting the hash in a list context, in which it returns all its key value pairs flattened out. for eg, see the below code 
use strict ;
use warnings ;
my %hash=('a'=>'b','c'=>'d') ;
my @arr=(%hash) ;
local $"="|" ;
print "@arr" ;

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which spews out 
a|b|c|d

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Now, 
(%hash,'e'=>'f')

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flattens out the key value pairs of %hash into a list. Hence it reduces to 
('a'=>'b','c'=>'d','e'=>'f')

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So on and so forth for code like 
(%hash1,%hash2)

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Manav

In reply to Re: Concerning hash operations (appending, concatenating) by manav
in thread Concerning hash operations (appending, concatenating) by RazorbladeBidet

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