I'm learning Perl. Could someone explain this default.cfg (aka db.cfg) code fragment to me? It's located near the very end of the default.cfg module of Dbman.

foreach (sort { $db_def{$a}[0] <=> $db_def{$b}[0] } keys %db_def) { ...<action>...

I'm particularly clueless about the function of the "{ $db_def{$a}[0] <=> $db_def{$b}[0] }" portion. How are {$a} and {$b} used?

Thanks. Jim

I know how to use them, but I don't know how to explain them.

I think that {$a} and {$b} are references to the subscripts of the hash. But I'm not really sure.

You might try asking in the Perl/CGI forum.


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JPD