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masak (6289)

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Been programming Perl since 2001. Found Perl 6 somewhere around 2004, and fell in love. Now developing November (a Perl 6 wiki), Druid (a Perl 6 board game), pls (a Perl 6 project installer), GGE (a regex engine), and Yapsi (a Perl 6 implementation). Heavy user of and irregular committer to Rakudo.

Journal of masak (6289)

Saturday December 27, 2008
02:55 PM

The care and feeding of S29

[ #38170 ]

As I've said before, S29 needs a lot of attention. It's a good resource for the things it covers, but it's also sadly lacking in many places.

Last night I found the time to skim through the synopses in one sitting, looking for functions and methods covered in other synopses but not in S29. My findings divide into "questions" and "omissions".


  • I see the sub version of defined declared in S29. Is the method version (used in S02:519) also in S29? I can't see it, but I might be missing something about how method signatures work.
  • Should the methods .new and .clone be covered by S29? They're slightly different beasts than abs or push, but they're still in a sense "builtin functions in Perl 6".
  • Same question for BUILD and CREATE.
  • What about metaclass methods, like .HOW.methods? Should they be covered in S29?
  • Should there be a way to extract information about a Rat's numerator/denominator? What methods does a Rat have?
  • if :exists and :delete get honourable mentions as methods, maybe we should have :p, :kv, :k and :v too
  • what's the name of the class that method descriptor objects belong to?
  • ditto attribute descriptor objects.


Things that no longer are omissions are marked in parentheses with a date and the wonderful person who added it.

  • isa, does, can (moritz++ 2009-01-05)
  • .perl (moritz++ 2009-01-05)
  • .succ, .pred (fixed on 2009-01-08)
  • any, all, one, none. these are also methods, on Hash for example. (fixed on 2009-01-08)
  • warn (fixed on 2009-01-08)
  • The slice contextualizer. (S03:1945) (fixed on 2009-01-08)
  • The hash contextualizer. (fixed on 2009-01-08)
  • The filetest operators. These are covered in S16, so maybe just mention them.
  • true(), not(), also methods
  • Range objects have .from, .to, .min, .max and .minmax methods (wayland++ 2009-02-27)
  • .contains on Hash and Array [update: not anymore]
  • Code has a .sig [update: now unambiguously .signature]
  • .ACCEPTS and .REJECTS on most everything -- provided by the Pattern role. Likely a mistake to put one under each section, though. Perhaps put one under Object and put a reference to S03.
  • The cat contextualizer (wayland++ 2009-02-27).
  • Object has .print and .say.
  • Block types have .next, .last, .redo and .leave on them. These are also functions, and need to be specced as such. (wayland++ 2009-02-27)
  • Block also has a .labels method. (wayland++ 2009-02-27)
  • fail and .handled (the former is in S29, but has no signature/summary). (wayland++ 2009-02-27)
  • .match, .subst and .trans from S05. (wayland++ 2009-02-27)
  • Match objects: .from, .to, .chars, .orig and .text. (wayland++ 2009-02-27)
  • Match state objects: .pos. (wayland++ 2009-02-27)
  • context() (wayland++ 2009-02-27).
  • .wrap, .unwrap and .assuming (wayland++ 2009-02-27).
  • callsame, callwith, nextsame, nextwith, lastcall.
  • VAR(), though a macro, could possibly get honourable mention. (wayland++ 2009-02-27)
  • Method descriptor objects: .name, .signature, .as, .multi, .do.
  • Attribute descriptor objects: .name, .type, .scope, .rw, .private, .accessor, .build, .readonly.

I'll see if I can add these during the coming month. A helping tuit or two would be greatly appreciated.

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