The Perl 6 design team met by phone on 26 March 2009. Larry, Patrick, Jerry, Nicholas, and chromatic attended.
Larry:
- writing talks for my upcoming trip
- leaving for NY and then Boston tomorrow morning
- talking at Bloomberg, Columbia, Harvard, MIT, and Yale
Patrick:
Larry:
- probably Farenheit
- speaking of heat, jumped in on the logo discussion
- installed Camelia
- the discussion is dying down now
- worked on the sequential output of the regexp matches with
.caps and .chunks methods
- they now come in key/value pairs
- they key of each match was the name it was bound to
- just a list of pairs, so there can be duplicates
- speculated about where we want to go about type narrowness
- Jonathan had a thundering apoplexy
- made that a post-6.0 decision
- we'll allow only one type constraint parameter for 6.0 to allow us to extend the syntax afterwards
- to allow multiple constraints, define a named subset type (for now)
- removed prefix
int from the standard grammar
- most of my actual hacking comes from the desire to rewrite
gimme5 in viv
- lots of cleanup
- fleshing out a lot of spots where things didn't get attached quite right in the match tree or AST or caps
- good for finding lots of little bugs
- the text in the nibbler now comes back as a match object, not just a string
- easier to call methods on when iterating through caps list
- nouns and values are now syntax categories
- derived grammars can more easily add new nouns and values
- added the first implementation of
ww rule
- still buggy and chews up all of my memory
- not used in STD yet
Jerry:
- student application period is open for GSoC
- closes on Friday, April 3
- we're looking for students and mentors
Patrick:
- enjoyed nice weather on the west coast
- spent several good days at Disneyland
- caught up on email otherwise
- released Rakudo Developers Release #15, codename "Oslo"
- that went smoothly; it's very easy to do releases
- will extract that into a release managers guide, like Parrot has
- will delegate releases to other people over the next few months
- reviewing and commenting on patches from other people
- mainly preparing for major PGE and PCT refactors
- will bring them up to date with the Synopses changes
- that should progress quite a ways on my Hague grant
Nicholas:
- Rafael's making great progress on smartmatching for Perl 5.10.1
Patrick:
- if you have a method declared without a parameter list, does it get
@_ like a sub, or no parameters?
Larry:
- I've been thinking it comes in the same way Perl 5 does it
- hadn't bothered to try to think about it the other way
Patrick:
Larry:
- but it leaves out the invocant
- that's the difference
- I haven't decided
- it's further from what a Perl 5 programmer might expect
- but it might be more useful
Patrick:
- we have three interpretations
- the
Settings and Synopsis 32 show people treating no parameter list as "no parameters"
Larry:
- there is an invocant and no additional parameters
() is that
Patrick:
- they treat a missing parameter list as that
Larry:
Patrick:
- Rakudo's interpretation is that you get
@_ which does not include the invocant
- the other interpretation is that you get
@_ which does include an invocant
- I need to add parens to those documents then
Larry:
- probably the correct answer is that it has to include the invocant
- we've said that the invocant is always just the first parameter
- also the interchangeability of sub and method bodies, so you can alias a method to a particular multimethod
Patrick:
- if you have a block with
@_ and $_, does the former include the latter which was the first argument to the block?
Larry:
Patrick:
- neither explicitly given as parameters, but are mentioned (implicitly or not) in the block
- does
@_ include a $_ parameter?
Larry:
- and how would you write that signature?
Jerry:
Patrick:
- I don't need an immediate answer on that
- I'll turn Moritz's ticket into a spec bug (not specified), not a Rakudo bug
