Modifiers may well be what you want:

$combined .= "a=$a " if $a;
$combined .= "b=$b " if $b;
$combined .= "c=$c " if $c;

[download]

Concise and clear.

Perl is Huffman encoded by design.

In reply to Re: Scalar joining, concatenation, involving varying text by GrandFather
in thread Scalar joining, concatenation, involving varying text by mhearse

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