Perl 6 - the future is here, just unevenly distributed

IRC log for #marpa, 2015-07-09

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Time Nick Message
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22:04 shadowpaste "jeffreykegler" at 217.168.150.38 pasted "A grammar of 8,675,309 "bc" strings, binarized" (41 lines) at http://fpaste.scsys.co.uk/492611
22:04 jeffreykegler One of my favorite exercises, which never made it into Marpa::R2, I've just coded into the SLIF
22:05 jeffreykegler That is, it would be nice to have counted blocks, of the kind (bc)[8675309]
22:06 jeffreykegler which represents 8,675,309 repetitions of the string "bc"
22:06 jeffreykegler The naive way to do this in BNF is, for a sequence of length n, to make the RHS n symbols long,
22:07 jeffreykegler which is a bit unwieldy if n=8675309
22:07 jeffreykegler Kollos will automatically binarize a block of this sort.
22:09 jeffreykegler That is very efficient -- when n=8675309, it translates into just 36 rules, each with a RHS of 1 or 2 symbols.
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