JSAWS seems to be running without strictures (and warnings?) enabled, so the OPed code seems to be using honest-to-goodness symbolic references. 

Win8 Strawberry 5.8.9.5 (32)  Fri 11/20/2020 12:19:01
C:\@Work\Perl\monks
>perl

# strictures and warnings not enabled

$n = 99;

${ foo . $n } = 'zot';

print $foo99;

^Z
zot

[download]
This is the general case in these circumstances (and one of the motivations for the creation of strict).

Update: The { } brackets in ${ foo . $n } are required for disambiguation. The statement
    $foo . $n = 'zot';
produces a very different result.

Give a man a fish:  <%-{-{-{-<

In reply to Re^6: Filehandle/array naming (updated) by AnomalousMonk
in thread Filehandle/array naming by JSAWS

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