Dear perlmonks,

I am looking for the simplest way (preferrably a one line code) to extract those elements from an array for which certain conditions are true.

I know that this is a very simple question, yet I have been unable to find its answer online which leads me to believe that I probably have been using the wrong terminology.

Below is a simple working example: I have two arrays a=(6,7,8) and b=(3,2,1) and I want only those elements of 'a' for which the elements in 'b' are greater than 1. The code below is working, but seems awfully complicated for such simple a task.

So if you know of a simpler possibility to achieve this, your help is very much appreciated. Thank you! 

#!/usr/bin/perl
use warnings;
use strict;
use diagnostics;

my @a=(6,7,8);
my @b=(3,2,1);
my @ind = grep { $b[$_]>1 } 0..$#b;
@a= map{ $a[$_]}@ind;

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In reply to Boolean array indexing by johnmillerflorida

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