Perl 6 - the future is here, just unevenly distributed

IRC log for #marpa, 2015-12-11

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Time Nick Message
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00:34 idiosyncrat_ I think it may be best that I simply abandon that post
00:36 idiosyncrat_ And just simply get on with making my points about the potential of Perl 6 grammars for meta-languages, composaiblity, etc.
00:52 ronsavage JK: I take 'that post' in http://irclog.perlgeek.de/m​arpa/2015-12-11#i_11695649 refers to your draft post, and not the advent one, right?
00:58 idiosyncrat_ ronsavage: right
00:59 idiosyncrat_ The advent post does a nice job of summarizing what the next generation parser should do.  I think it's a good opportunity to make some points.
02:04 idiosyncrat_ Did some research and came up with what was (to me) a surprise -- the Perl 6 parse engine has a reasonably precise characterization ...
02:04 idiosyncrat_ it is PEG with its own custom tie-breaking
02:05 idiosyncrat_ That went into the Perl 6 doc in 2010, but either I missed it or it's really been that long since I read that section of the doc.
02:17 idiosyncrat_ I've dealt with PEG in http://jeffreykegler.github.io/Ocean-of-A​wareness-blog/individual/2015/03/peg.html
03:07 ronsavage JK: Yep, you've 'dealt' with PEG.....
04:18 ceridwen Custom tie-breaking?
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04:41 Idiosyncrat Custom tie-breaking!  http://design.perl6.org/S05.html#Overview
04:42 Idiosyncrat If top-down is not the world's best parsing method, it ain't for lack of bright folks trying. :-)
04:54 ceridwen That is spectacular.  I think I'd rather deal with PEG's prioritized choice.
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05:20 Idiosyncrat In Perl 5, Larry took yacc beyond its capabilities.
05:20 Idiosyncrat I think he may have repeated the feat for PEG with Perl 6.  I believe it would be the largest & most complex language with a PEG grammar.
05:21 Idiosyncrat Larry's version of PEG, to be sure, seems to be considerably enhanced.
05:21 Idiosyncrat You can change PEG's arbitrary choice to backtracking, and control the backtracking, for example.
05:22 Idiosyncrat This would extend the languages PEG can parse considerably, but it makes a tricky parsing method even trickier.
05:24 Idiosyncrat By the way, I don't think the current actual Perl 6 implementation uses this PEG-powered Perl 6 parse engine to parse Perl 6 -- I think they've redone it in recursive descent.
05:24 Idiosyncrat I tried to check a few things on #perl6 a while ago, but the folks on-line at that point didn't know much.
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17:59 idiosyncrat_ http://act.yapc.eu/lpw2015/talk/6468
17:59 idiosyncrat_ Maxim Vuets again gives his Toki Pona / Marpa / etc etc talk in London tomorrow.
18:00 idiosyncrat_ This is the "lost Marpa talk" -- Maxim has given it twice, but managed to dodge the cameras each time.
18:01 idiosyncrat_ Perhaps this time some intrepid cameraman will catch it in the wild.
18:04 idiosyncrat_ Also, I wandered over to #perl6 this morning
18:04 idiosyncrat_ http://irclog.perlgeek.de/p​erl6/2015-12-11#i_11699488
18:06 idiosyncrat_ Larry took the time to answer some of my questions which, given the impending deadline, was extremely generous on his part.
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