So, "why?" /me said to myself, "Why can't Perl chew on this?"

my $i = 0; my $str = "$arr[$i]=$arr[++$i]" x($#arr/2);

or this?

my $i = 0; my $str = "$arr[$i]=$arr[++$i]" x($#arr/2) . "&";

Now, of course the first snippet left the question of inserting the ampersands un-resolved, but that's OK, because Perl wants an int after the x operator and 5/2 isn't likely to ever be an int. Then, the second suffers the same defect ... and inserts the ampersand only AFTER printing the second name=John; a 'gotcha' for this nutty idea that I don't see a way around (in this approach).

But, the idea perked on, leading to this, just because TIMTOWTDI: 

#!/usr/bin/perl
use strict;
use warnings;
use 5.014;

# desired: name=John&number=7&status=unknown 

my @arr = qw(name John number 7 status unknown);
my $i = 0;
my $str = "$arr[$i]=$arr[++$i]";
$str .= "&$arr[++$i]=$arr[++$i]";
$str .= "&" . "$arr[++$i]=$arr[++$i]";
say $str;

[download]

Output? As specified.

In reply to Re: Joining an array by ww
in thread Joining an array by tangent

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