Re: Uninitialized Value $regex

[Athanasius]

Hello ra93013,

Just a side note — this:

$args{dir}     = $DEFAULT_DIRECTORY unless defined( $args{dir} );
$args{log}     = $DEFAULT_LOG_FILE  unless defined( $args{log} );
$args{pattern} = $DEFAULT_PATTERN   unless defined( $args{pattern} );
$args{sendto}  = $DEFAULT_SEND_TO   unless defined( $args{sendto} );
$args{help}    = 0                  unless defined( $args{help} );

can be written more succinctly as:

$args{dir}     //= $DEFAULT_DIRECTORY;
$args{log}     //= $DEFAULT_LOG_FILE;
$args{pattern} //= $DEFAULT_PATTERN;
$args{sendto}  //= $DEFAULT_SEND_TO;
$args{help}    //= 0;

See perlop#Logical-Defined-Or.

Hope that helps,

[afoken]

can be written more succinctly ... See perlop#Logical-Defined-Or.

Yes, but not in perl versions older than 5.10 (released Dec 2007) / 5.9 (released Jul 2007), see perl5100delta /perl590delta. Older perl versions will likely see this as a syntax error. Unfortunately, this little detail is not documented in perlop. For someone new to Perl, perlop must read like defined-or was always present in Perl.

Alexander

[AnomalousMonk]

... not in perl versions older than 5.10 ...

In any version of Perl, the command-line  perldoc perlop (and other docs) can be a very welcome local feature sanity check. It's saved me wasted motion more than once.

The on-line perlop (and on-line documentation in general) is tied to the most recent Perl version and is perhaps a bit overenthusiastic in presenting new features, but even this can be dialed back to previous versions (back to 5.8, IIRC).

[choroba]

One of the reasons why Syntax::Construct exists.