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<amz3>my product proc is obviously wrong

<amz3> http://stackoverflow.com/questions/2485226/cartesian-product-in-scheme#2485242

<ArneBab>amz3: I tried my hand at making the elegant solution of mark_weaver easier to understand: http://stackoverflow.com/a/42881649/7666

<thomassgn>Hi guile; is there something along the lines of https://robotgame.net/ - basicly a game world where one can plug in bots (ai) and turn by turn compete in some way.

<thomassgn>Started learning c++ this way, and would to get into guile with something like it too.

<amz3>so gnu texmacs use guile

<amz3>that's what I've been wondering

<amz3>that said my context free grammar parser is incomplete

<amz3>It only does validation

<amz3>I stumbled upon a nice procedure that allows to create a lset out of a regular list

<amz3>(define (unify lst)

<amz3> (apply lset-adjoin equal? '() lst))

<amz3>it makes the content of 'lst' appear once in the output according to 'equal?'

<amz3>basically it construct a lset according to 'equal?'

<amz3>erf, I just discovered that 5 years ago (actually) I solved a non trivial problem regarding earley parser

<amz3>apparently only the recognize part of the algorithm works bullet proof

<amz3>in cubic time

<amz3>it's unlikely that will guess the correct algorithm myself, even it seems i did find something 5 years ago...

<amz3>so I need to read some papers about the subject

<amz3>something I am very proud of, is the debug output of my python version https://github.com/amirouche/python-earley-parser/blob/master/earleyparser/output.pdf

<amz3>which seems to be the equivalent of the trees displayed in http://www.sciencedirect.com/science/article/pii/S1571066108001497

<amz3>meh... they use the same name for the parse result construction procedure in the paper as in my python implementation

<wferi>Hi! When I (display) an argument passed to my function, it gives something like

<wferi>(#<procedure x (l p a)> ((#<procedure y (l p a)>)))

<wferi>what's this thing?

<wferi>the procedure? predicate says #f

<wferi>which one would return #t?

<artyom-poptsov>wferi: Could you please provide the context, e.g. the procedure source and code that calls it? IMO, It's hard to guess what the problem you experiencing w/o seeing the code.

<wferi>artyom-poptsov: well, not easily. I'm no scheme coder, I'm just trying to add some scheme code to Lilypond. I create this object by some higher level means, and just trying to handle it somehow...

<wferi>do you happen to know what Lilypond is?

<jmd>wferi: It is a system for rendereing music scores.

<wferi>yes, jmd, and it embeds guile, it's partly written in scheme

<jmd>I think that is correct.

<wferi>but it has its own input syntax, a user like me does not meet scheme most of the time

<wferi>but it has some hooks

<CharlieBrown>wferi: Lilypond is the stuff.

<wferi>and now I created an object by Lilypond's syntax, and have to handle it from scheme

<CharlieBrown>wferi: Didn't Lilypond used to be in Python?

<wferi>but I don't know the Lilypond internals

<jmd>CharlieBrown: Not that I recall. In fact I think lilypond has existed longer than Python.

<wferi>so I don't know what the heck this scheme object is

<wferi>its full representation is longer, though

<wferi>so, could you please identify the type of this object based on its written representation?

<wferi>so that I know what to read up on...

<wferi>CharlieBrown: Lilypond never met Python, as far as I know

<wferi>ok, it turned out to be a pair

<spk121>civodul: in i18n, a bug because proc 'locale-monetary-grouping' is sometimes called 'locale-monetary-digit-grouping'

<spk121>civodul: if you pick one or the other, I'll fix it.

<spk121>wingo: ditto ^

<MoronicAcid>Has anyone built a PPA for Guile 2.2?

<MoronicAcid>Or working on making one for that matter?

<civodul>spk121: oh, unbound variable?

<spk121>civodul: Exported at 'locale-monetary-grouping'. Documented as 'locale-monetary-grouping'. Coded as 'locale-monetary-digit-grouping'.

<civodul>oh, ok

<civodul>good catch

<civodul>terrible

<paroneayea>MoronicAcid: I haven't seen anyone talk of it

<MoronicAcid>paroneayea: Yeah, doing a quick Google search doesn't turn up anything.

<daviid>heya!

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2017-03-19.log