[ABE.pm] Reference fun

[Ricardo SIGNES]

* "Faber J. Fedor" <faber at linuxnj.com> [2007-11-09T20:35:46]
> However, this code:
> 
>     use YAML::Tiny;
>     use Config::IniFiles;
>     
>     my $inFile = 'foo.ini' ;
>     my %fndVars ;
>     
>     tie %fndVars, 'Config::IniFiles', ( -file => $inFile);
>     
>     my $ref = \%fndVars;
>     
>     my $yaml = YAML::Tiny->new;
>     $yaml->[0] = $ref;
>     $yaml->write("foo.yml");
> 
> produces a file like this:
> 
> --- {}

You have a HUGE difference here:

>     tie %fndVars, 'Config::IniFiles', ( -file => $inFile);

Once you're using a tied variable, all bets are off.  I would be happy to take
a commission to make it work, though. :-)

> If I replace '$yaml->[0] = $ref;' with '$yaml->[0] = %fndVars;' I get
> this:
> 
> --- 0

You can't put a hash directly into an array element, only a reference to it.
Otherwise, you're using the hash in scalar context.  Normally, that gives you a
fairly useles string describing hash bucket usage, like "3/8."  With a tied
hash, all bets are off.  Usually you get false.

For .ini files, I use Config::INI (and ::Reader and ::Writer).

-- 
rjbs