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<Zaius>
what would be the best way to reverse a string?
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<solarwind>
You can create a buffer and append to it string's char in reverse order (starting with String.lenght - 1). Then you can Buffer.contents that buffer.
<solarwind>
Or you can make a list out of that string (rather trivial function), reverse that list and List.fold_left that.
<solarwind>
The latter is rather costly.
<Zaius>
:) but its cooler, isnt it. i was thinking about copying the string and using String.set whilst iterating over the original
<Zaius>
thats the cost of setting a byte in a string vs. appending to a buffer, which neednt grow
<solarwind>
Well, I guess you can always profile that code. Compile the two reverse_string function with ocamlopt or ocamlopt.opt and run gprof on them.
<solarwind>
functions*
<Nutssh>
I use oprofile under linux instead of gprof, its non-invasive, so I trust the results a bit more.
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<solarwind>
Hm.. my FreeBSD system doesn't have oprofile in ports.
<m3ga>
oprofile is linux only i believe. it uses special hook into linux kernel
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<solarwind>
Ah, ok.
<solarwind>
Nutssh said "under linux" so I assumed that it wasn't linux only.
<Nutssh>
Sorry for being inexact.
<solarwind>
No problem.
<solarwind>
I only made a make search name=oprofile in my ports directory. Piece of cake :)
<Nutssh>
Its an amazing tool. THough I hear the apple equivalents are even better.
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<solarwind>
I find quite interesting why the interpreter moans about inexhaustive pattern matching when fed with something like this: let foo 0 = 1;;
<solarwind>
Expanding that a bit gives: let foo = function x -> match x with 0 -> 1;; which is a clear case of not exhaustive pattern matching.
<mflux>
hmm..
<mflux>
so you say the diagnostics is wrong?
<mflux>
or right
<mflux>
:)
<mflux>
did you mean to say 'not inexhaustive'?
<mflux>
in any case, let foo 0 = 1;; foo 4 -> inexhaustive exception
<solarwind>
Not exhaustive.
<solarwind>
s/inexhaustive/not exhaustive/
<solarwind>
I just found that interesting. On the basis that a function is a pattern matching.
<mflux>
oh
<mflux>
interesting in that it works properly?-)
<solarwind>
Interesting in that someone who doesn't quite get the idea that a function is a pattern matching would be surprised to receive that error message.
<mflux>
I wonder how often a person who wouldn't know functions are pattern matching would then use 'let foo 0 = 42' kind of functions..
<solarwind>
*shrug* I've just been asked this a minute ago.
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<det>
solarwind: I dont understand what is confusing about that
<det>
solarwind: How would that function serve any utility if it only accepted the integer 0?
<solarwind>
I didn't say that function would serve any utility. I also didn't say that it is confusing in any way (at least for me). I said that the message the interpreter is spitting out after one declares that 'function' can be worked out much more easily if you detail that function's definition as shown above.
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<Svrog>
hi everyone
<Svrog>
has anyone played around with caml under os x?
<vodka-goo>
a friend of mine has
<Svrog>
oh ok
<Svrog>
im asking cause im trying to find some functional language syntax hi-lighting plugins for the xcode ide
<vodka-goo>
I think he's using emacs
<vodka-goo>
you might also try vim, which is installed on every OSX
<Svrog>
i am using vim :)
<Svrog>
but i thought id give xcode a go
<Svrog>
if i cant find the plugins ill just stick with vim
<vodka-goo>
Svrog: do you have omlet for vim ?
<Svrog>
nope
<vodka-goo>
it's a (good) alternative to the official ocaml mode
<Svrog>
i always have indenting off in vim.. i cant remember the reason why i disabled it in first place but im pretty much used to it now
<Svrog>
but id still be interested in trying the plugin considering there must have been a reason why i stopped using indenting even though like i said i cant remember what it was
<vodka-goo>
I used to use emacs, so there's no way I indent myself. But I've heard of many vimers indenting manually... strange
<vodka-goo>
however, vim indentation is even more automatic that emacs's
<det>
vodka-goo: wow, vim comes default with OSX?
<Svrog>
yes
<vodka-goo>
Svrog: the default indentation is ... strange ;)
<Svrog>
os x comes with a bunch of gnu utilities
<Svrog>
gcc, x windows, the works :)
<det>
vim isnt GNU :)
<solarwind>
Luckily.
<Svrog>
oh well.. fair enough
<Svrog>
my mistake
<Svrog>
but even so - os x does come with vim
<Svrog>
vodka-goo: main reason why i got to use vim rather then emacs is because for some reason emacs under cygwin seemed broken on every box ive tried it on
<vodka-goo>
solarwind: luckily ?
<Svrog>
and ive tried different versions too
<vodka-goo>
Svrog: are you using cygwin under osx ?
<vodka-goo>
s/under/on/
<det>
Svrog: xemacs on windows works very well
<Svrog>
half of the shortcuts just didn't work - initially i thought it was just me not setting something up properly but i asked some people who are veteran emacs users to have a look at it and they were just as puzzled
<Svrog>
no - cygwin only works under windows
<vodka-goo>
ok
<det>
Svrog: Do you mean GNU Emacs or X Emacs?
<vodka-goo>
I think emacs runs ok in X inside OSX
<Svrog>
ive been a windows user for ages - only got my first mac last week
<Svrog>
gnu emacs
<det>
try the cygwin xemacs
<det>
it works perfectly
<vodka-goo>
det: he's now on osx, so..
<det>
We
<vodka-goo>
Svrog: anyway, vim is fine
<Svrog>
yeah probably - this is the reason why years ago when i tried both vim and emacs i ended up using vim cause i couldnt get emacs to work properly :)
<Svrog>
yeah im pretty happy with vim
<det>
We'll, I am sure GNU Emacs works great under OS X :)
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<solarwind>
vodka-goo: Let's just say that I ... frown a bit upon all things that come from under the GNU flag. Though I use emacs.
<det>
Ahh, we'll whatever floats your boat :)
<Svrog>
true - but at this point i dont see a reason to switch from vim to emacs really.. as for xcode i would probably give up on using it after about a day but even so i wouldnt mind getting some plugins for ocaml, scheme and haskell
<det>
Svrog: I was a vim user for a while and I switched to emacs
<Svrog>
any particular reason why?
<vodka-goo>
solarwind: I think gcc but also many basic utils (gawk, sed, gmake...) are perfectly suitable
<det>
emacs is more productive for me
<Svrog>
oh ok
<Svrog>
i might give it another go
<det>
Emacs is more dominant in the FP community also
<Svrog>
solarwind: why do you dislike gnu?
<vodka-goo>
det: more productive ? did you used vim a long time
<det>
vodka-goo: yes
<solarwind>
vodka-goo: Some tools are ok, indeed. But I frown upon them on "political" reasons.
<solarwind>
Licensing, that is.
<Svrog>
oh right
<vodka-goo>
don't you like GPL ?
<vodka-goo>
det: well, I'll remember what you said, it's surprising. emacs is more intuitive, people can prefer elisp and mono-modality, but for productivity I thought everybody agreed on vim being the best
<Svrog>
vodka-goo: what style of indenting does omlet use? can it be customized easily?
<vodka-goo>
Svrog: not yet, but I'll work at it!
<vodka-goo>
it indents like vanilla-tuareg
<vodka-goo>
it should be possible to customize by tuning the script directly
<Svrog>
i have no idea what thats like.. hmm.. any source code examples you could give me? like some package that uses same/similar indenting style
<vodka-goo>
Svrog: ther's a link on the page I've posted
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<Svrog>
checking it out now
<vodka-goo>
hope you like it
<solarwind>
Though I've been using emacs for ages.
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<Svrog>
looks very different to my style but it doesnt look ugly
<Svrog>
well.. except for the colors :P
<Svrog>
but thats due to the color script
<vodka-goo>
many guys indent like that... for example, most of the guys in a project i'm working on use emacs/tuareg
<vodka-goo>
so I needed something similar
<vodka-goo>
yeah, colors are not depending on the filetype on vim (unlike emacs)
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<Svrog>
well the biggest difference from my style is that i tend to match all -> operators/symbols whatever they are
<Svrog>
as in vertically indent them so they're always one directly under the previous one
<vodka-goo>
uh ?
<vodka-goo>
you mean if the first pattern has no |, align it on the | of the second pattern ?
<Svrog>
no no.. umm.. trying to think of an example..
<Svrog>
i could paste something into the channel but youd probably have to cut and paste it into vim or something - depending on whether your irc client is setup for viewing code or not
<vodka-goo>
paste it, doesn't matter (maybe in private)
<Svrog>
ok
<Svrog>
hang on
<solarwind>
Why not using something like pastebin.com?
<vodka-goo>
solarwind: I didn't know about that site... I'll remember ;)
<vodka-goo>
I guess that site uses it's own syntax hilightings
<vodka-goo>
they're a bit broken..
<solarwind>
Yeah.. so far I tried for perl, c, java and python.
<vodka-goo>
I just tried for ocaml ;)
<vodka-goo>
it doesn't like the # for methods calling, which is interpreted as beginning of comment
<solarwind>
Heh, I guess it's mainly designed for Unix scripting languages which, traditionally, use the pound sign as beginning of a comment.
<vodka-goo>
of course
<vodka-goo>
but there are some "universal" indentation tools around
<Svrog>
vodka-goo: can i override omlets default indenting? as in if i manually reindent something that it indented is it gonna fight me for it?
<vodka-goo>
I think I've seen on freshmeat something in php
<mflux>
I wouldn't mind if someone wrote a simple syntax colorizer that would generate ansi (or other control codes) for using with less
<vodka-goo>
Svrog: yeah, it won't change it unless you ask
<vodka-goo>
mflux: nice idea... use vim as a pager ?
<Svrog>
cool - thats what i hate about most ides with passion - in particular java ideas.. they often fight you and keep reindenting your stuff..
<mflux>
I already know less bindings
<Svrog>
ideas=ides
<vodka-goo>
Svrog: it's not omlet specific, it's vim. it indents new lines, and when you ask, no more
<Svrog>
oh right
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<_JusSx_>
why ocaml list works in that way?
<_JusSx_>
i would like to get one message for one email
<vodka-goo>
uh ? what's the matter ?
<_JusSx_>
don't like it
<vodka-goo>
don't you get one message for one email ?
<_JusSx_>
no
<_JusSx_>
Caml-list digest, Vol 1 #185 - 10 msgs
<_JusSx_>
ten message for a email
<vodka-goo>
that's because you suscribed the wrong way
<_JusSx_>
ahh ok
<vodka-goo>
i receive one email for one msg
<_JusSx_>
once i did so
<_JusSx_>
then i unsubscribed
<vodka-goo>
or maybe are you reading caml-weekly-news .. doesn't seem so
<_JusSx_>
no
<vodka-goo>
ok you probably missed sth the 2nd time
<_JusSx_>
Would you like to receive list mail batched in a daily digest?
<_JusSx_>
damm
<_JusSx_>
maybe i clicked that
<_JusSx_>
i changed option
<_JusSx_>
thanx a lot for your help
<_JusSx_>
vodka-goo: where are you from?
<vodka-goo>
france, paris
<vodka-goo>
that wasn't a too technical question ;)
<vodka-goo>
what about you ?
<_JusSx_>
why do you use functional language such as ocaml?
<vodka-goo>
cause I was taught ocaml at school, and I still like it...
<_JusSx_>
yeah i like it too
<vodka-goo>
(I also used C and Perl)
<_JusSx_>
but i didn't study it at school
<vodka-goo>
so you're self-motivated, that's great
<_JusSx_>
i studied a lot of programming languages
<_JusSx_>
but functional languages are really great
<_JusSx_>
ocaml
<_JusSx_>
too cool
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<vodka-goo>
modules are also a very good thing for structuring a project
<vodka-goo>
modules and functors really help more than just splitting code among many files
<_JusSx_>
yeah
* vodka-goo
goes back playing crack-attack
<_JusSx_>
lol
<_JusSx_>
ok
<_JusSx_>
bye
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<Ag_47>
hiall
<Smerdyakov>
You missed a space.
<Ag_47>
does anybody have any experience in jabbr?
<Smerdyakov>
You missed an 'e'.
<Ag_47>
no, it's an ocaml library by Mike Lin
<solarwind>
And he also uses g instead of k.
<Smerdyakov>
You missed an 'e' again; Mike Line.
<Ag_47>
however, are there any other xmpp libs?
<Smerdyakov>
Oh, and an 'x'.
<Smerdyakov>
Mixke Line.
<Ag_47>
Smerdyakov: thnx, but that's not an answer to my question
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<kakkui>
hello
<kakkui>
i have some problems with m program
<kakkui>
Can I print it here?
<solarwind>
No. Use something like pastebin.com.
<kakkui>
I did not know that kind of service...
<solarwind>
Now you know :)
<solarwind>
I don't know the policy of this channel but I'm sure they are not eager to have code pasted inside the channel.
<kakkui>
ok
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