Anonymous Monk,
I am sure there is a more elegant way than this and that some other uber cool monk will provide it, but here goes: 
#!/usr/bin/perl -w
use strict;

my @array = qw(0 1 2 3 4 5 6 7 8);

print join '_' , grep length, map {$array[$_] if $_ % 2 == 1} (0 .. $#
+array);

[download]

Cheers - L~R

Update: If you know the number of elements in the array, don't use this method - use BrowserUk's solution

In reply to Re: selective join by Limbic~Region
in thread selective join by Anonymous Monk

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