Re^3: Real private methods using lexical subs in Perl 5.18.

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Re^4: Real private methods using lexical subs in Perl 5.18. by Arunbear (Prior) on Jun 01, 2013 at 19:18 UTC
Yes, there are workarounds available (there's also Sub::Name), but the extra effort involved is one of the reasons I suspect most folks don't use this mechanism for private methods.	[reply]
Re^5: Real private methods using lexical subs in Perl 5.18. by LanX (Saint) on Jun 01, 2013 at 19:59 UTC
Really? I think most either don't know or prefer avoiding code_refs. It's a very special magic which is practically not mentioned in the docs and never in conjunction with the word "private". I grepped thru all pods for `->$` and found only 10 occurences from which 8 are only of the string form `->$methname` and only 2 with `->$coderef`: /usr/share/perl/5.10/pod/perlbot.pod: $self->{'delegate'}->$ +AUTOLOAD(@_); /usr/share/perl/5.10/pod/perlfaq7.pod: $widget->$tric +k(); /usr/share/perl/5.10/pod/perlsec.pod: $obj->$method(@args); /usr/share/perl/5.10/pod/perltooc.pod: $self->$methname($newvalue +); /usr/share/perl/5.10/pod/perltooc.pod: $self->$coderef($newvalue) +; /usr/share/perl/5.10/pod/perltoot.pod: return ref_to($c +lass->$methname); /usr/share/perl/5.10/pod/perltoot.pod: return ref_to($c +lass->$methname); /usr/share/perl/5.10/pod/perlunicode.pod: return $sth->$what; /usr/share/perl/5.10/pod/perlunicode.pod: my @arr = $sth->$what +; /usr/share/perl/5.10/pod/perlunicode.pod: my $ret = $sth->$what +; [download] the only explanation I found was in perlop `The Arrow Operator ""->"" is an infix dereference operator, just as it is in C and C++. If the right side is either a "...", "{...}", or a "(...)" subscript, then the left side must be either a hard or symbolic reference to an array, a hash, or a subroutine respectively. (Or technically speaking, a location capable of holding a hard reference, if it’s an array or hash reference being used for assignment.) See perlreftut and perlref.` `Otherwise, the right side is a method name or a simple scalar variable containing either the method name or a subroutine reference, and the left side must be either an object (a blessed reference) or a class name (that is, a package name). See perlobj.` Cheers Rolf ( addicted to the Perl Programming Language)	[reply] [d/l] [select]
Re^6: Real private methods using lexical subs in Perl 5.18. by Arunbear (Prior) on Jun 01, 2013 at 20:19 UTC
I learned about it from "Programming Perl" 3rd Ed, Chapter 12 ("Objects"), in the section called "Private Methods" (on page 329).	[reply]
Re^4: Real private methods using lexical subs in Perl 5.18. by LanX (Saint) on Jun 01, 2013 at 15:10 UTC
I'd rather inspect the caller for file and line to put it in the log. edit or using PadWalker to find the variable-name 2 levels up holding the coderef 1 level up. Cheers Rolf ( addicted to the Perl Programming Language)	[reply]

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