#!/usr/bin/perl -w
use warnings;
use strict;
use 5.10.0;

my @in_array = qw(A B C E F G);
my @out_array;
my $insert = 'D';

push @out_array,
        @in_array[0..2],
        $insert,
        @in_array[3..5];

say join (', ',  @in_array);

say join (', ',  @out_array);

exit;

[download]
I think this approach is the most human-readable. By the way, it doesn't use splice with its performance issues.

In reply to Re: How do I insert an element into an arbitrary (in range) array index? by Jorge_de_Burgos
in thread How do I insert an element into an arbitrary (in range) array index? by Anonymous Monk

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