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<rogo>
?
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<Yoric[DT]>
hi
<det>
Hi
<det>
Was it a conscious decision to use raise an exception style instead of return an option style in Batteries?
<det>
I find exception style code more awkward to work with than option style. Also, it seems you must convert to an option in order to get proper tail recursion when using such functions in a loop.
<det>
And I also noticed some "depreciated" exceptionless modules in Batteries.
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<Yoric[DT]>
They need to be updated.
<Yoric[DT]>
We hope to have complete support for both exception-style and option-style returns by release 1.
<det>
Is exception style significantly more efficient or something (Is the allocation a big deal) ? If not, why not just use option style ?
<Yoric[DT]>
Well, it's significantly faster -- and there's backwards compatibility with Extlib and/or the base library.
* _zack
is having a first look at Batteries / Netchannels integration
<_zack>
since I've to work on a project with Netchannels, why don't try to use it from Batteries? :)
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<flux>
apparently some people also use % for function composition
<flux>
but its associtivity is wrong
<vixey>
that's crazy
<vixey>
% doesn't look like a ring
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<det>
|> and |- are fine to me
<det>
just the associativity of their reverses is wrong
<det>
I wouldn't mind a camlp4 solution
<vixey>
I think that |> and |- are absolutely awful
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<flux>
det, I suppose camlp4 is the way, although in a sense it does reduce the easiness ocaml code can now be understood; the associativity and priority of an operator is defined by its first character
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<det>
what characters are available for the reverse associativity ?
<flux>
(btw, if batteries were to make changes to that, it would be a good idea to provide a revised table)
<flux>
sure
* Yoric[DT]
ponders replacing -|, |-, <| and |> with <@, @>, <@@, @@>
<vixey>
oh I don't think that's a good idea
<vixey>
you don't rally want to have <@ <@@ or @@>
<flux>
really?
<flux>
vixey, what was the good idea again?
<vixey>
only a function compose (c <- b) -> (b <- a) -> (c <- a)
<vixey>
just adding in these other ones for completeness or something, it can be detremental I think
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<Yoric[DT]>
I have a question of English.
<Kerris4>
Yoric[DT]: comedy Japanese option: <(^_^<),(>^_^)>,<(^_^<)^_^<),(>^_^(>^_^)>
<Yoric[DT]>
Kerris4: :)
<Yoric[DT]>
If you see the word "cum" in a paper about computer science, does that shock you?
<Yoric[DT]>
(I was running out of synonyms for "catch", "with", etc.)
<Yoric[DT]>
But one of my co-writers seem to believe that this may be ill-interpreted.
<vixey>
lol Kerris4
<Yoric[DT]>
s/seem/seems/
<vixey>
Yoric[DT]: what is the intended meaning?
<Yoric[DT]>
"with"
<Kerris4>
Yoric[DT]: I think most academics will read that as latin
<vixey>
really I did not know that is a latin word
<Yoric[DT]>
Well, I certainly wrote that as latin.
<vixey>
but why can't you use 'with'?
<Yoric[DT]>
vixey: nope, need synonyms :)
<vixey>
ohwell
<Yoric[DT]>
(actually, it's a function name in OCaml, so I can't call it "with")
<flux>
with'
<flux>
with_
<flux>
I do that sometimes ;)
<Yoric[DT]>
I could call it "wth" or "_with" or anything such, but that doesn't look quite as nice as "cum", in my eyes.
<flux>
class_ in c++, perhaps class' in ocaml
* Yoric[DT]
would rather be implementing new features in Batteries Included than working on this paper.
<vixey>
I think teh language ocaml is working against it.. not allowing unicode operators
<vixey>
but then again, typing unicode symbols is something not everyone is used ot
<flux>
I'm sure people would be happy with the ö-operator
<flux>
it's unused and it has the ring
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<flux>
plus I can type it conveniently
<vixey>
lol
<flux>
infact, if I'll ever write my own language, ö will be the function composition operator ;)
<mbacarella>
i don't know how many times i've looked up the definition of powerset
<mbacarella>
i can never write one cold
<mbacarella>
i think i need to concoct some kind of life or death situation so i can force myself to learn it
<Yoric[DT]>
I have your wife.
<Yoric[DT]>
I want the powerset.
<Yoric[DT]>
You have 15 minutes to deliver it.
<Yoric[DT]>
(add spooky pseudo-Russian accent)
<Yoric[DT]>
Or else...
<flux>
I remember a story about a russian mathematician needing to prove that he indeed is a mathematician under the threat of his life, but I can't remember the specifics..
<mbacarella>
you bastard!
<Yoric[DT]>
Niahahahahahahahahaha.
<flux>
(and for some reason my breadcrumbs extension in firefox which is supposed to store every page I visit, doesn't know it either)
<Yoric[DT]>
(source: Jeremy Irons, _Dungeons and Dragons_)
<det>
what about "using" (instead of cum)
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<Yoric[DT]>
possibly
<Camarade_Tux>
<Yoric[DT]> (actually, it's a function name in OCaml, so I can't call it "with")
<Camarade_Tux>
so you actually write "let('s) cum" ? =D
<Yoric[DT]>
tsss
<Yoric[DT]>
No, I didn't.
<Yoric[DT]>
It was the name of an argument to a function which happened to be a function itself.
<Camarade_Tux>
hehe ;)
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<mbishop>
_zack: thanks for the i386 package of alpha 2 :D
* mbishop
installs now
<_zack>
mbishop: you're welcome
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<mbishop>
Ohhh, initialization of modules is neat, and the example for random is exactly what I would use it for heh
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<Yoric[DT]>
:)
* Yoric[DT]
is actually using these shuffle programs in class, to decide which students will get marks.
<mbishop>
haha
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<mbishop>
Hmm
<mbishop>
what's the reasoning behind -- and --- being different only by the latter allowing reverse? why not allow -- to do both?
<Yoric[DT]>
Note that there's a bug in -- (unless _zack took the snapshot after I've fixed it).
<Yoric[DT]>
Well, sometimes you expect your interval [|a, b|] to be empty if b < a, sometimes not.
<Yoric[DT]>
I can find uses for both.
<mbishop>
Hmm, fair enough
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<mbishop>
Another question, why was mod renamed to modulo? I know that's the full name, but why not stick with mod?
<Yoric[DT]>
mod is an operator
<Yoric[DT]>
We can't redefine it.
<Yoric[DT]>
mod is an operator *which we can't redefine* , that is
<mbishop>
Ah, and modulo is different?
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<mbishop>
oh
<mbishop>
yeah I see the difference heh
<Yoric[DT]>
iirc, modulo is redefined for each numeric type
<mbishop>
yeah, I see it in Complex and stuff
<mbishop>
Anyway, great work, this is looking really neat :)
<Yoric[DT]>
:)
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<mbacarella>
is there a better interface than opendir/readdir for getting a list of files in a directory?