Re: On References to the Unnamed

But bless \"$_", 'Foo' doesn't even work: Modification of a read-only value attempted...

You could make a "factory" for scalar refs:

sub new_scalar_ref { my $x; \$x }
[download]

Of course, this technique can be used in-line with do, if you prefer.

Another idea you could consider is to bless an anonymous sub. That, at least, will throw an exception if a client ever tries to deref it as data.

Comment on Re: On References to the Unnamed Select or Download Code

Replies are listed 'Best First'.
Re^2: On References to the Unnamed by gaal (Parson) on Mar 15, 2005 at 19:00 UTC
Golfed: `sub new_scalar_ref { \(my $x) }` This is one of The Few Places Where `\()` Syntax is Useful^TM. Another favorite is `DBI->bind_columns()`.	[reply] [d/l] [select]
Re^3: On References to the Unnamed by jdporter (Paladin) on Mar 15, 2005 at 19:53 UTC
`sub new_scalar_ref { \my $x }` [download]	[reply] [d/l]
Re^4: On References to the Unnamed by gaal (Parson) on Mar 16, 2005 at 05:43 UTC
Ha! Cool. Hard to beat that. :) Inlined that'd be `do { \my $x }`, I suppose. Update: As Anonymous Monk mentions below. This kinda makes me wonder what `gensym` did except maybe to encapsulate this?	[reply] [d/l] [select]
Re^5: On References to the Unnamed by eyepopslikeamosquito (Archbishop) on Mar 16, 2005 at 13:16 UTC
Re^6: On References to the Unnamed by gaal (Parson) on Mar 16, 2005 at 22:41 UTC
Re^3: On References to the Unnamed by leriksen (Curate) on Mar 21, 2005 at 00:39 UTC
Another is in Getopt::Long (example slightly golfed) `GetOptions('in\|i=s' => \my $indir, 'out\|o=s' => \my $outfile, 'log\|l=s' => \my $logfile, 'cp\|c=s' => \my $cp, 'help\|?' => \my $help, man => \my $man) or pod2usage(2);` [download] ...it is better to be approximately right than precisely wrong. - Warren Buffet	[reply] [d/l]
Re^2: On References to the Unnamed by tlm (Prior) on Mar 16, 2005 at 00:02 UTC
What??? It works perfectly well on my system (Linux), both with Perl 5.6.1 and Perl 5.8.4. No error messages at all. Perl is an endless source of wonderment... the lowliest monk	[reply]