scala/moocs

about the Scala courses offered by the Scala Center via Coursera. http://scala-lang.org/conduct/ applies

Han van Venrooij

@irundaia

I've used homebrew to install scala. But I think IntelliJ downloads its own version of the SDK

Anton Yalyshev

@yalishevant

@TaoOfCoding if you install Scala via homebrew, default path of SDK for IntelliJ should be like [/usr/local/Cellar/scala/2./idea]. The finder won't show directories like /usr etc. A workaround is to temporarily add this folder to the shortcuts sidebar in Finder (open a terminal and run: open /usr/local/Cellar/scala. This will open a finder and show the idea directory. You can drag this to the shortcut sidebar.).
In IntelliJ go to Project Structure -> Global Libraries -> New GL (plus sign) -> Scala SDK -> Browse -> choose [/usr/local/Cellar/scala/2./idea]. This way works for me. But usually I use SDK that IntelliJ proposes to download.

daemoz

@JeremyCooper

@TaoOfCoding You can also Apple-Shift-G to type a folder to navigate to.

Charles Mims

@charlesmims

Hello - First post! I'm on week3 of Functional Programming in Scala, and having a hard time trying to follow along in the videos using IntelliJ. I can't figure out how to get Rational.scala and scratch.sc set up so that I can use package week3 and import week3._. In Rational.scala I have no warnings, but in scratch.sc I get a warning that "Package names doesn't correspond to directory structure." My project is setup like this: progfun/src/main/scala/week3 where week3 is a Package in IntelliJ, and Rational.scala and scratch.sc are Scala Class and Scala Worksheet, respectively. Has anyone here run the examples from the lectures in week3 in IntelliJ can help me get this working?

Martijn Hoekstra

@martijnhoekstra

maybe give it a try on the coursera forums if you don't get anything useful here @charlesmims - I'm not an IntelliJ user myself, so I can't help you out, but I don't see anyone else stepping up (yet?) either

Igor Ramazanov

@igor-ramazanov

Just now ended Scala Specialization, it was really awesome!
It took about 1 year for passing all courses parallel with working and studying at university.
When I started this specialization I didn’t know much anything about Scala and now I’m working remotely on a very good job as Scala Developer.
I want to say 'thank you' for your work: @heathermiller @julienrf and all EPFL Scala team, thanks!

Julien Richard-Foy

@julienrf

Thanks for your kind words :)

vonny

@egorushkin

Sorry for the question, I'm new to the coursera, I can not figure out how to send my homework (it's written run the script sending the work from the download package), which script to run? I will be grateful for the help

Jimin Hsieh

@jiminhsieh

@egorushkin Into sbt interactive mode. Then

sbt shell > submit xxx@email.com your-secret

vonny

@egorushkin

@jiminhsieh Thank you so much

Anthony Louis Burns, Esq.

@anthonylouisburns

have been workign on finishing the capstone project all weekend

am getting odd results from grader

and no activity on forum

Julien Richard-Foy

@julienrf

Hi, we will answer on the forum!

Maxime Kjaer

@MaximeKjaer

Hi @anthonylouisburns, I've replied on the forum, but feel free to write to me here too if you need any help

Tom-Michael

@TOMMFW_twitter

Hi everyone,

If you're on the search for your new Scala gig, check out Functional Works for some of the greatest Scala opportunities around the world!

Check it out - https://goo.gl/HxigLe

Thanks, TM

tchakap9

@tchakap9

hi everybody i'm searching how to plot a graph in scala. I have tried the plotly api but i get an error ( Exception in thread "main" java.lang.NoClassDefFoundError: org/json4s/JsonAST$JValue).

ChanForPres

@ChanForPres

channel still active?

Julien Richard-Foy

@julienrf

Hey, do you have any question?

som-snytt

@som-snytt

That last image was pretty cool. Like a tree, but hipster, and against a red sun.

ChanForPres

@ChanForPres

@TOMMFW_twitter :+1: :fire:

Nth/April

@NthPortal

I believe I have found a problem with the assignment for Week 2 of the Functional Programming Principles in Scala course on Coursera. who do I talk to about this?

Julien Richard-Foy

@julienrf

Me :)

What’s the problem?

Nth/April

@NthPortal

it asks you to implement:

  /**
   * Returns a set transformed by applying `f` to each element of `s`.
   */
  def map(s: FunSet, f: Int => Int): FunSet

however, you cannot actually correctly implement such a set using f. you need the inverse of f (which may not even exist, e.g. for _ / 2). you can hack it together by iterating over some subset of the domain, as is done with forall and exists, but that is not a completely correct solution/implementation, and also should be documented as needing to use the upper and lower bounds if you need to do so

Julien Richard-Foy

@julienrf

You are right.

We should document that an incomplete implementation is fine (ie, works only for values within [-1000, +1000])

Nth/April

@NthPortal

:thumbsup:

Martijn Hoekstra

@martijnhoekstra

:/ that sounds pretty questionable.

Nth/April

@NthPortal

it's what's used for forall and exists, so it's at least not new in that respect

Julien Richard-Foy

@julienrf

Actually, the goal is to implement map in terms of forall or exists, but this wasn’t clearly specified in the instructions

@0x99_gitlab

@julienrf Hi, it seems that it is not possible to download the handouts from http://alaska.epfl.ch/~dockermoocs/handouts-coursera-2.13

Julien Richard-Foy

@julienrf

Hello, can you give me the URL of the coursera page that contains this link?

@0x99_gitlab

This one for example: http://alaska.epfl.ch/~dockermoocs/handouts-coursera-2.13/reductions.zip

It is the Reductions and Prefix Sums assignment on Week 2 for the Parallel Programming course

Julien Richard-Foy

@julienrf

Thanks. Indeed, the links are dead.

I’m looking at it.

Julien Richard-Foy

@julienrf

@0x99_gitlab The problem should be fixed now, thanks to our awesome sysadmin!

Can you confirm that this is the case?

@0x99_gitlab

It works, yes. Thanks a lot for the quick response.

Jimin Hsieh

@jiminhsieh

When do we see the new version of Functional Program Design?
I saw the announcement at twitter. The thing is I did see the new version of the syllabus. However, I didn’t see any change when I opened that course. I still saw the old version. BTW, I’m the one already finished the course. Thanks.

Screen Shot 2020-03-17 at 12.51.44 PM.png

Julien Richard-Foy

@julienrf

Hello @jiminhsieh! Since you already finished the course, you need to explicitly ask to “switch session” to jump to the latest session. Let me know if that doesn’t work.

Jimin Hsieh

@jiminhsieh

@julienrf Do you mean this page? If yes, I will try it later.

Another question is does the courses updated to https://courseware.epfl.ch/. Thanks

Julien Richard-Foy

@julienrf

Yes, this page. No, the courses on courseware.epfl.ch will be terminated soon.

Jimin Hsieh

@jiminhsieh

Got it. Thanks for the answer.

Rim Chatti

@RymCh

Hello, could you help me please?
I tried to submit my work,
so I opened the terminal (bigdata-example) , sbt and then submit myemail secrettoken
and it doesn't work!
error : expected ;
Thanks in advance!

Julien Richard-Foy

@julienrf

Hello @RymCh, could you please report your issue on the Coursera forum? (unless you already did?) We have teaching assistants that will help you within a couple of days.

Rim Chatti

@RymCh

@julienrf Thank you for the advice, I'll try to!

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