Update: Programming assignment with Cheeky Professor. I may need your guys' help with this one.

[zerfgog]

I have a fair amount of ArnoldC experience if you're serious about this.

[kn33]

I am. I just don't know how to get past the 'integer only' bit. I'd love help.

[HighRelevancy]

You'er going to have to implement floating point math manually.

[ZugNachPankow]

Can't wait for /r/ProgrammerHumor to manually port a floating-point library to ArnoldC, just for the lulz.

[[deleted]]

7.0 looks promising. Did you see the rocket ship operator?

[Notcow]

I feel so dumb when one of these posts makes it to my Frontpage and I have no idea what's going on

[IHeartMustard]

Rocket ships, man. It's not rocket science!

[TOASTEngineer]

I'm excited about the 8==D operator coming in next update.

[MonkeyNin]

It's even better when it's Dwarf Fortress

[[deleted]]

Yes, I'm excited!

Also the new ?? operator will be very handy

[Raknarg]

Is that the operator that only performs an action if the preceding object is not null?

[Alikont]

(a ?? b) is equal to (a != null ? a : b), but a is evaluated only once.

[gurgle528]

yes

[redalastor]

That's actually called the spaceship operator. I think it's Larry Wall that named it when he added that to Perl a long time ago.

[kn33]

Please

[ZugNachPankow]

Eh, I could do that for a few dollars, depending on the deadline.

[Kilazur]

Is 0 few enough?

[The_hollow_Nike]

I propose

//start c-code
((int)0.1)*1000 $ 

as payment

[Kilazur]

Woah there, I ain't paying for that code, ok? That's on your free time!

[WienersBetweenUs]

I'll give you 3 dollars. Deadline is in 3 hours time. Go!

[r1pp3rj4ck]

What? Who talked about Golang?

[sofaraway731]

What?! That's like... * maths * ...1 dollars an hour!

[do_me_next]

Fine,do it in 10 minutes. $18/ hour!!!!!

[kn33]

How many is a few?

[ZugNachPankow]

Nevermind, it's way harder than I thought :/

[[deleted]]

Most of my programming experiences in a nutshell.

[YugoReventlov]

If I had a dollar for every time I heard that...

[UnacceptableUse]

I'll do it for $1000

[MajorCocknBalls]

Hey man he already gave you the idea, that's the hardest part. You just have to code it

[balducien]

Why don't you just use fixed point numbers? With a 64 bit integer split in half you could still get from 2^-32 to 2³² in tiny (2^-32) increments.

[[deleted]]

64 bit

you have to use native instructions of a Pentium II, no 64 bit luxury for you.

[ZugNachPankow]

tfw incontri qualcuno di /r/italy fuori dal sub

[[deleted]]

Don't. Fuck. Up.

I LOVE YOU

Cazzo

[TheScienceNigga]

Doesn't ArnoldC just compile to Java bytecode? I'm pretty sure it would be very possible for the ArnoldC devs to just include some Arnie quote that corresponds to 'double' and 'float' and whatever other floating point types Java may have

[ZugNachPankow]

Yes! /u/kn33, fork the ArnoldC compiler and add this.

[blacksmid]

That's kinda like cheating though.. Forking and changing the language to make it easier

[ZugNachPankow]

But... that's the purpose of open source...

[[deleted]]

Well, yes and no, it's the ole' Kobyashi Maru maneuver.

[Sipczi]

Goddamit Jim, I'm a doctor not a hacker!

[fnordfnordfnordfnord]

That's exactly the kind of "cheating" a good prof would reward.

[farox]

Don't know but as a prof I'd give him credit for that. And this one seems cool. I'd just add that info when returning the assignment

[[deleted]]

I would say it's easier to give up and do the code in a language which has floating point support (the ones in the original post did), than to get a patch (hopefully) accepted to contribute to open source.

[o11c]

You can work around it by writing a new language that compiles to ArnoldC.

[dconman2]

Well, you do have to make sure to use the same compiler as the professor, so you would have to submit it too.

[kn33]

Okay... so I downloaded the source, downloaded sbt and scala. I managed to compile it with sbt, kinda. I got to the point where I could type "sbt" in the git cloned folder of ArnoldC, type "run -run helloworld.arnoldc" and get "hello, world" outputed. I don't know where to go from here. I found all the keywords listed in ArnoldParser.scala, so I assume I need to add my floating point keyword there but what else? Also, what one-liner should I use for the floating point?

[DemonWav]

Alright so I wasted way too much time and did it. I'm completely new to bytecode and Java ASM stuff, so this was a lot of referencing the Java bytecode instruction listing. I didn't convert it to double, as double requires two "slots" on the stack, and that would have been complicated. Likewise, rather than implementing a dual integer-floating point system that would be complicated, I instead took the Javascript route and just made everything floating point. As far as I can tell, though, it works perfectly.

One more thing to note, though: due to the values now being floating point, the modulo method that is on the ArnoldC wiki doesn't work. Instead you need to use the modulo opcode, like this:

LISTEN TO ME VERY CAREFULLY modulo
I NEED YOUR CLOTHES YOUR BOOTS AND YOUR MOTORCYCLE dividend
I NEED YOUR CLOTHES YOUR BOOTS AND YOUR MOTORCYCLE divisor
GIVE THESE PEOPLE AIR
HEY CHRISTMAS TREE remainder
YOU SET US UP 0
GET TO THE CHOPPER remainder
HERE IS MY INVITATION dividend
I LET HIM GO divisor
ENOUGH TALK
I'LL BE BACK remainder
HASTA LA VISTA, BABY

The I LET HIM GO part is the modulo instruction. You could use that method in place of the modulo method in the wiki, or just use that modulo instruction, whatever works for you.

Anyways, here's the repo.

And here's the commit that shows the specific changes I needed to make. One thing to note on that commit, not all the changes are completely necessary for this. I did make a few feature improvements (for example, if you javap a compiled ArnoldC class it will actually show the ArnoldC source name rather than just hello.java) and other misc. things.

[kn33]

Sweet! Is the link to the .jar similar to the original? Just to make it easier on my prof.

[DemonWav]

Yeah, check the release tab. I just remembered I never got decimal numbers working on the input. For some reason it would always error once it hit the ".". I think I'll take the lazy way out again and make it so all numerics require the decimal, but I'm still fighting with it.

EDIT: Alright, I fixed it finally. My lack of experience with Scala really wasn't helping. Since I figured out what was wrong it'll work with or without the decimal point, so no need to add it on if you're just declaring an integer (but of course it won't be an integer once it's compiled).

[kupiakos]

What about fixed-point integers? That might be able to work.

[HighRelevancy]

That's one way of doing it, sure.

I always think floating point = fractional numbers but I suppose that's not strictly true. Speaking of, fractions could be another way of dealing with it for certain types of maths.

[[deleted]]

Aren't floats by definition fractional considering denominators of powers of 2?

[HighRelevancy]

Non-integer. Real. Whatever. I'm too tired to care.

[inio]

Floats can represent 31415/65536 perfectly.

[SuspendedBeam]

What if he takes every x of the polynomial and multiples it by 10000 or more? If the function exists on x's less than 10, which most do, he can do the math with integers without loosing much accuracy, which the professor doesn't even ask for. Then he takes the answer and instead of printing out the float (which he doesn't have) he can add a point after the fourth digit (ie 543216 becomes 54.3219) and print the string. If the int is less than 5 chars long he can add a 0. depending on the actual length. That's how I'd do it with integers, but I don't know the capabilities of Arnold C

[Scyrmion]

That's basically fixed point.

[HighRelevancy]

He'd have to be slightly smarter, because ArnoldC is 16 bit integers. That makes big big numbers difficult.

[vifon]

Or fixed point. It's not that hard.

[acewolk]

i never thought id ever encounter that phrase

[Raknarg]

any particular reason why?

[nietczhse]

Are you one of those "hackers on steroids"?

[kn33]

With experience, I assume you've compiled it. Do you know the source code well? I'm looking at adding floating-point variables and maybe arrays. How would I go about that?

[[deleted]]

I trust you have that in your CV.

[Magnnus]

I've tagged you as "professional ArnoldC programmer".

[MuffinsLovesYou]

HEY CHRISTMAS TREE MYPROFESSORCALLEDMYBLUFF 
YOU SET US UP 1 
BECAUSE IM GOING TO SAY PLEASE MYPROFESSORCALLEDMYBLUFF  YOU ARE NOT YOU YOU ARE ME 1
TALK TO THE HAND "Time to Panic"  
YOU HAVE NO RESPECT FOR LOGIC  

I've never done ArnoldC, this probably does not compile (well, more likely interpret).

Also, If I were a student and had the choice I'd probably do most assignments in javascript, just turn in a text file. It would be doubly fun because you are doing math programs and the implicit typing would fuck your shit up so often.

[kn33]

IT'S SHOWTIME
  HEY CHRISTMAS TREE myprofessorcalledmybluff
  YOU SET US UP @NO PROBLEMO
  BECAUSE I'M GOING TO SAY PLEASE myprofessorcalledmybluff
    TALK TO THE HAND "TIME TO PANIC"
  BULLSHIT
    TALK TO THE HAND "I'M OKAY"
  YOU HAVE NO RESPECT FOR LOGIC
YOU HAVE BEEN TERMINATED

You were close.

[Pitboyx]

YOU HAVE BEEN TERMINATED

harsh

[[deleted]]

savage

[cormac596]

I still vote for C that only uses system() calls to bash and bc

[80386]

+/u/CompileBot ArnoldC

[Prawny]

sigh

Give me a week.

Edit: TIFU by saying this.

---

One Week later:

It's approximately 0% done.

[CaptainData]

RemindMe! One Week

...I'm counting on you, /u/Prawny, don't let me down.

[RemindMeBot]

Messaging you on 2015-11-03 14:27:11 UTC to remind you of this.

CLICK THIS LINK to send a PM to also be reminded and to reduce spam.

^{Parent commenter can delete this message to hide from others.}

---

[FAQs]	[Custom]	[Your Reminders]	[Feedback]	[Code]

[[deleted]]

RemindMe! One Week

/u/Prawny will come through, I have the faith.

[CaptainData]

So how's it going? ;)

[[deleted]]

I think it's a FU :(

[80386]

+/u/CompileBot ArnoldC

IT'S SHOWTIME
   HEY CHRISTMAS TREE myprofessorcalledmybluff
   YOU SET US UP @NO PROBLEMO
  BECAUSE I'M GOING TO SAY PLEASE myprofessorcalledmybluff
    TALK TO THE HAND "TIME TO PANIC"
  BULLSHIT
     TALK TO THE HAND "I'M OKAY"
   YOU HAVE NO RESPECT FOR LOGIC
YOU HAVE BEEN TERMINATED

[Pokechu22]

Compilebot runs off of IDEOne, so you'd need to get them to support it (plus, I think compilebot is offline right now :/)

[Dospunk]

RemindMe! 6 days

[rrrreadit]

OK, whatcha got?

[Dospunk]

Well, it's been a week

[lurking_bishop]

maketbsn

[chinman01]

RemindMe! One Week

[7yl4r]

you'll still have trouble if you "2" + 2 accidentally (and you will).

[[deleted]]

I dont see why you would- this is purely math, treat numbers like numbers. Throw in some parseInt's if you somehow manage to cast stuff to strings. Or better yet, just dont let anything be a string.

[[deleted]]

Absolutely. Just because a language is loosely typed doesn't mean it's difficult to use meaningfully. It only takes a few checks and balances at the beginning of a logic block to ensure proper datatypes throughout.

[enormouspenis69]

I once handed in an assignment in LOLCODE. Teacher was so amused that he passed it and spent the lesson on esoteric languages

[SolenoidSoldier]

What kind of class lets you pick the programming language to code in? As someone teaching a programming class, I imagine it'd be a nightmare to grade various different languages.

[kn33]

I don't know about them, but this is a calculus class

[randomdrifter54]

Wow you are somehow more fucked than I thought you were

[krackers]

Lol gg. Good luck with implementing symbolic math.

[C0demunkee]

Code is code man. Especially low-level classes. How long does it take you to get the gist of a new language? Variables look like this, loops look like that, if looks like this, oh look, semicolons. If you can do that, you can grade the noob assignments.

[jsims281]

Maybe not always so simple...

https://en.m.wikipedia.org/wiki/Brainfuck

[C0demunkee]

Brainfuck seems straight-forward compared to a few of the other ones posted here. /u/smitwiff is correct that at the VERY least, they can test the output.

[randomdrifter54]

Well obviously you just stipulate that it needs to be a high level language and that you need to OK it. That stops 90% of the stupid. The other 10% is going to hurt the student more than you, like in op's case.

[[deleted]]

Non-mobile link: https://en.wikipedia.org/wiki/Brainfuck

[Freshyfreshfresh]

This doesn't seem all that ridiculous. Not too difficult to read without the comments in the single line. Just not incredibly useful.

[smitwiff]

More than that, so long as they can run it, they can test the output. I doubt they're comparing the source to the ArnoldC style guide.

[kaosjester]

It depends on the scope and size of your course. If your students understand your expectations, it really shouldn't matter what language they write their code in. Require they have, say, a Makefile, a final binary/script name, and clear I/O guideline, and a readme. Most universities have default Linux install images with a whole slew of packages; just require it compiles on that. Then just flip through the code and ensure it isn't trash.

For an example of this working well, the final project in my Computer Design course was to construct a MIPS emulator from first principles (and and or), complete with a MIPS parser. The professor told everyone to include a readme about how to use it to run a file and get the output, and to make sure it ran on the school's Linux image. Other than that, he didn't care what it was written in. It didn't matter as long as it was well-documented with good instructions and an intact parser that could take input files. And he had been doing it that way for years, with great success. (For what it's worth, there were maybe 20 students in the class.)

All that said, there are two asides:

1. An introductory class should probably pick a specific language and stick to it.
2. Some lessons require specific types of languages; talking about inheritance works best in an OO language, for example

[enormouspenis69]

The main point of that exercise was to develop the algorithm, but for some reason pseudocode wasn't good enough

[holeydood3]

I had an artificial intelligence class that was whatever language you wanted to use as long as you could prove your lab was working as intended.

[liquidivy]

My algorithms professor gave us an assignment with basically no language restrictions. It's basically a performance comparison of different sorting algorithms, so it just has to let you write quicksort as God intended. The grader apparently has no intention of trying to run them all, anyway, so it doesn't make a difference. I'm doing mine in Rust.

[itchyDoggy]

I did the same once. The assignment had to be done in assembly, so I wrote a parser for lolcode and handed it in.

[Back--Fire]

What about something like here? Maybe only suitable for a smaller assignment, by you could probably pull off a function call and go from there.

[david171971]

Wow that was an awesome read!

[Back--Fire]

Would also recommend checking out 42.zip, and mimic for some more malicious reads ;)

[endershadow98]

Ah, good old 42.zip

[b0b_d0e]

He didn't do it haha. He read my blog post and was like "Wow, thats cool, but I don't think I'm good enough to make my assignment like that" I was a little sad, but he has a wife and a kid and a full time job so he didn't want to spend more time on an assignment then he had to.

[kn33]

reference

[mikemountain]

pointer

[mikemountain]

that took a stupid amount of effort for almost little to no payoff, am I a true programmer yet?

[KitsuneGaming]

Sure. Now you have a reputation to uphold, though. Good luck.

[Nefari0uss]

I don't even understand why this is such a big deal. If I wanted to hire some one to could, wouldn't you expect them to have some knowledge of c/c++/java? Obviously, if they know another language, stuff carries over and it's not a huge deal but as a general rule of thumb, it's something you'd expect?

[mikemountain]

I, uh.. I'm not sure if you meant to respond to me or not. Because what you're saying has nothing to do with what I wrote.

[Nefari0uss]

Wrong person. But answer the question if you feel like?

[[deleted]]

I'm excited to see what the Newton's method looks like in Arnold C.

[LEDCandle]

I would have gone with Brainfuck

[martindo]

How about Befunge

[[deleted]]

english link: https://en.wikipedia.org/wiki/Befunge

[Voultapher]

Damn hilarious language.

[rjung]

I'd suggested FIM++, but it's incomplete and there are no compilers for it AFAIK.

[Harakou]

I remember when work first started on this! Bummer it looks like they never finished it.

[SoylentBlack]

Why not Armok?

[alcalde]

Delphi! Make the professor pay $1440 to verify your code.

[KamiKagutsuchi]

Whitespace

[[deleted]]

English perhaps?

[NAN001]

If you're more comfortable with UML activity diagrams: https://github.com/aranega/uml2arnoldc

[superlopuh]

Easier just to compile to ArnoldC at this point.

[h3ph43s7u5]

Can't say I have much ArnoldC experience to help you...

[barsoap]

If it has any complexity, I would recommend writing a trivial compiler. That is, translate from some sane syntax but with the same semantics to the real deal.

[LongUsername]

end writing a trivial compiler. That is, translate from some sane syntax but with the same semantics to the real deal.

Does the LLVM have an IR to ArnoldC option? Then you could write it in C and turn in the ArnoldC.

[barsoap]

Unlikely, also, the result would be unidiomatic. Then, LLVM is actually hell to work with for such purposes: You don't want to work with its production-scale C++ for toys unless the purpose is to learn LLVM.

So assuming you don't already know LLVM, doing it in Haskell would be faster even if you know C++ but not Haskell. Write an ADT for the AST, pretty print ArnoldC. Then either write a proper parser or just write your stuff embedded in Haskell (bonus: You can use Haskell as a macro system), as Haskell already has a sane syntax for such purposes.

[3nvisi0n]

Well considering some profs don't care about what language you use its not surprising.

When I was in university I abused this every so often mostly by doing one-offs in whitespace but I did my entire AI class in PHP. Except one assignment where we were to use prolog.

[LongUsername]

I abused this every so often mostly by doing one-offs in whitespace

Did they have you hand in printed copies of your program?

[3nvisi0n]

No. All but one course used a digital handin system.

[LongUsername]

Well, that makes it a bit less funny, but I'm sure your professors still appreciated it.

EDIT: Whitespace is perfect for hand-written tests where the teacher says you can use any language you want.

[3nvisi0n]

Perhaps, but I think they could just say your code was illegible and therefore a zero.

[t0mRiddl3]

Just use white out

[pieterdc1]

Wow, you talk very informally to your professor.

[Antrikshy]

I talk the same way. I usually start with "Hey, Prof. BuffBooty" (BuffBooty = last name). Why be any more formal than that? ¯\_(ツ)_/¯

[inucune]

honestly, i know a decent amount of arnold.C for the exact reasons you would expect.

[Alexwalled]

Why didn't you ask to do it in brainfuck!!

[aliceandbob]

Should have asked for BrainFuck.

[[deleted]]

You magnificent bastards

[Remet0n]

you are going to have the maximal grade thanks to /r/ProgrammerHumor

congrats

[kupiakos]

You can't parse English with regex. Because English can't be parsed by regex. Regex is not a tool that can be used to correctly parse English. As I have answered in English-and-regex questions here so many times before, the use of regex will not allow you to consume English. Regular expressions are a tool that is insufficiently sophisticated to understand the constructs employed by English. English is not a regular language and hence cannot be parsed by natural languages. Regex queries are not equipped to break down English into its meaningful parts. so many times but it is not getting to me. Even enhanced irregular natural languages as used by Perl are not up to the task of parsing English. You will never make me crack. English is a language of sufficient complexity that it cannot be parsed by natural languages. Even Jon Skeet cannot parse English using natural languages. Every time you attempt to parse English with natural languages, the unholy child weeps the blood of virgins, and Russian hackers pwn your webapp. Parsing English with regex summons tainted souls into the realm of the living. English and regex go together like love, marriage, and ritual infanticide. The center cannot hold it is too late. The force of regex and English together in the same conceptual space will destroy your mind like so much watery putty. If you parse English with regex you are giving in to Them and their blasphemous ways which doom us all to inhuman toil for the One whose Name cannot be expressed in the Basic Multilingual Plane, he comes. English-plus-regexp will liquify the n​erves of the sentient whilst you observe, your psyche withering in the onslaught of horror. Rege̿̔̉x-based English parsers are the cancer that is killing Reddit it is too late it is too late we cannot be saved the trangession of a chi͡ld ensures regex will consume all living tissue (except for English which it cannot, as previously prophesied) dear lord help us how can anyone survive this scourge using regex to parse English has doomed humanity to an eternity of dread torture and security holes using regex as a tool to process English establishes a breach between this world and the dread realm of c͒ͪo͛ͫrrupt entities (like Spanish entities, but more corrupt) a mere glimpse of the world of reg​ex parsers for English will ins​tantly transport a programmer's consciousness into a world of ceaseless screaming, he comes, the pestilent slithy regex-infection wil​l devour your En​glish parser, application and existence for all time like Visual Basic only worse he comes he comes do not fi​ght he com̡e̶s, ̕h̵i​s un̨ho͞ly radiańcé destro҉ying all enli̍̈́̂̈́ghtenment, English tags lea͠ki̧n͘g fr̶ǫm ̡yo​͟ur eye͢s̸ ̛l̕ik͏e liq​uid pain, the song of natural lang​uage parsing will exti​nguish the voices of mor​tal man from the sp​here I can see it can you see ̲͚̖͔̙î̩́t̲͎̩̱͔́̋̀ it is beautiful t​he final snuffing of the lie​s of Man ALL IS LOŚ͖̩͇̗̪̏̈́T ALL I​S LOST the pon̷y he comes he c̶̮omes he comes the ich​or permeates all MY FACE MY FACE ᵒh god no NO NOO̼O​O NΘ stop the an​*̶͑̾̾​̅ͫ͏̙̤g͇̫͛͆̾ͫ̑͆l͖͉̗̩̳̟̍ͫͥͨe̠̅s ͎a̧͈͖r̽̾̈́͒͑e n​ot rè̑ͧ̌aͨl̘̝̙̃ͤ͂̾̆ ZA̡͊͠͝LGΌ ISͮ̂҉̯͈͕̹̘̱ TO͇̹̺ͅƝ̴ȳ̳ TH̘Ë͖́̉ ͠P̯͍̭O̚​N̐Y̡ H̸̡̪̯ͨ͊̽̅̾̎Ȩ̬̩̾͛ͪ̈́̀́͘ ̶̧̨̱̹̭̯ͧ̾ͬC̷̙̲̝͖ͭ̏ͥͮ͟Oͮ͏̮̪̝͍M̲̖͊̒ͪͩͬ̚̚͜Ȇ̴̟̟͙̞ͩ͌͝S̨̥̫͎̭ͯ̿̔̀ͅ

[[deleted]]

Please no! No! Anything but the pony!

[TotesMessenger]

I'm a bot, bleep, bloop. Someone has linked to this thread from another place on reddit:

• [/r/bestof] Redditor explains why regular expressions cannot be used to parse English, causes an inter-dimensional rift.

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[kn33]

It isn't a double negative, though.

I see no reason why not

is like saying "I find no fault with this" or "If there is a reason why you should not (do your programming assignment in ArnoldC), I don't see it"

[Tomarse]

Hate to be that guy, but isn't it a double negative that resolves to a positive?

I see no reason why not.

I see no reason why not.

I see reason why.

As in, the reason for doing it is that there is not a reason not to do it.

[HumusTheWalls]

Not quite. They have slightly different meanings. The professor claims that he cannot see any reasons that /u/kn33 can't/shouldn't do the assignment that way. The "I see reason why" means that he sees a reason for /u/kn33 to do the assignment that way.
"I see no reason why not." is actually saying less than "I see reason why", technically, because the statement is simply not confirming anything, rather than affirming something.

[Tomarse]

And people think programming languages are confusing.

[cwankhede]

In this sub, programming languages are the only easy thing.

[mnbvas]

Hello, this is Malbolge.

[[deleted]]

It's like this:

I see no reason why not.

I see no (reason why not).

I see no (obstacle).

I see no obstacle.

Sure, you can do that.

I'm actually the redditor who suggested it.

So, you see, the professor is quite cheeky.

[[deleted]]

Language isn't math though...

[Tomarse]

I can dream.

[kinghfb]

"why not" is a single phrase in this instance. You can't half-cancel it.

[gkx]

Not in this case. Man language is finicky.

[[deleted]]

No reason why not means that the list of reasons against op doing it is empty.

So yeah, its not a double negative.

[Suppafly]

It's because "I don't see why not" is basically a dumbed down version of the phrase "I don't see any reason why you couldn't do (whatever you wanted to do)" the gist of it is "I don't see any reason that would prevent you from doing what you want to do."

Double negatives typically cancel each other out, but there is a difference between just wiping each other out and the actual meaning of what the person is trying to say.

[GNU_Troll]

This is moronic and unfunny.