Slight obscura; please no mock my style! ;-) 

use List::Util qw( reduce pairs );

# Firm talk so perl know I mean it.
    reduce ## abuce
    {      $$a       {
           $$b[0]
    }  +=  $$b[1],$a } \

# It simple now.
my %result => pairs %h1, %h2, %h3, %h4;

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In reply to Re: merge two hashes into one by Anonymous Monk
in thread merge two hashes into one by ovedpo15

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