Solved

merging a hash with array of hashes

Posted on 2009-05-06
2
162 Views
Last Modified: 2012-05-06
Can somebody help me append the keys in a hash that are not in an array of hashes? just the keys that are not in that AoH, the rest should remain as it was originally in the AoH. Thanks!

my %Line = ('LIST'=>'2','PAGES'=>'77','EDITION'=>'new');
my @AoH = ({'LIST'=>'2','PAGES'=>'100'},
                      {'LIST'=>'10','EDITION'=>'new'},
                      {'PAGES'=>'30','EDITION'=>'old'},
                      {'LIST'=>'2','PAGES'=>'300'});

desired outcome:

my %Line = ('LIST'=>'2','PAGES'=>'77','EDITION'=>'new');
 my @AoH = ({'LIST'=>'2','PAGES'=>'100','EDITION'=>'new'},
{'LIST'=>'10','PAGES'=>'77','EDITION'=>'new'},
{'LIST'=>'2','PAGES'=>'30','EDITION'=>'old'},
{'LIST'=>'2','PAGES'=>'300','EDITION'=>'old','EDITION'=>'new'});
0
Comment
Question by:cucugirl
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
2 Comments
 
LVL 84

Accepted Solution

by:
ozo earned 125 total points
ID: 24318412
%$_=(%Line,%$_) for  @AoH;
0
 
LVL 84

Expert Comment

by:ozo
ID: 24318462
#if there are many keys in @AoH, and all the values are true, it may be more efficient to do
for my $h ( @Aoh ){ $h->{$_} ||= $Line{$_} for keys %Line }
0

Featured Post

Secure Your Active Directory - April 20, 2017

Active Directory plays a critical role in your company’s IT infrastructure and keeping it secure in today’s hacker-infested world is a must.
Microsoft published 300+ pages of guidance, but who has the time, money, and resources to implement? Register now to find an easier way.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
perl split by | 2 111
pipe to sed or perl, please help 5 137
problem with using the glob function 1 77
Extract data from span tag 1 96
I have been pestered over the years to produce and distribute regular data extracts, and often the request have explicitly requested the data be emailed as an Excel attachement; specifically Excel, as it appears: CSV files confuse (no Red or Green h…
Checking the Alert Log in AWS RDS Oracle can be a pain through their user interface.  I made a script to download the Alert Log, look for errors, and email me the trace files.  In this article I'll describe what I did and share my script.
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…

696 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question