I've been trying to understand program 6.21 in the Perl Cookbook, which changes URLs to html links here's a snippet:
#!/usr/bin/perl
$urls = '{http|telnet|gopher|file|wais|ftp');
$ltrs = '\w';
$gunk = '/#~:.?+=&%!\-';
$punc = '.:?@\-';
$any = "${ltrs}${gunk}${punc}";
I understand what $any is, but
what exactly is ${ltrs} or ${gunk} ??
is this an anonymous hash
thanks for any help,
Pam
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