I´ve been googling but I could not find a good documentation.
I create a project with an entry API using macros, but now since I cannot use it even from my own project I need to export it.
Anybody please can point me to a good documentation/blog where explain how to export/import a macro project with intellij?.
Regards.
You don't need to do anything special. Just build it and use it as a dependency of other projects. If you are using SBT, run command sbt publishLocal. Also, you can use macros in other modules of a multi-module project, or in tests (if they are defined in main sources).
Related
So Im learning Scala and using the Intellj IDE to make my projects with. When I click on New Project and then Scala I get the choice of
Scala
SBT
when i hoover the mouse over them I get additional info
Sample module with attached Scala SDK
SBT based Scala Project
Now I have played around with SBT before I downloaded Intellij and used it to compile and run some Scala code, so i kind of know what it is.
But I just don't know which one I should be choosing 1 or 2 and why someone would choose 1 over 2 or vise-versa?
Use SBT project . This will lead to Intellij doing the autobuild using SBT wityhout you having to rework the build each time.
The first time Intellij runs the sbt it will take some time to set itself up but eventually it will be far more rewarding.
Also as mentioned by Boris for portability you would want a standard build/compile tool.
I think there is not the solution to your problem. If you just want to try out Scala and the Scala SDK, the first choice is fine because you don't have any needs for an automated build. In my opinion is this your choice if you want to play around a bit without any overhead.
If you want to do a more real project I suggest to use sbt because it will build your project and manage your dependencies. This makes your project more flexible, easy to build for somebody else.
We can use IntelliJ-IDEA to import an normal SBT project easily, but I'm trying to write an IDEA plugin project with Scala, and I want to use SBT to manage it(the dependencies).
But now I don't know how to do it, and not sure if it's possible, so I have to use IDEA to create an IDEA plugin project manually, and commit the .idea/* files to git, which is not good.
Is it possible to use SBT to create an IDEA plugin project?
I am not sure how the exact code would look. But the play framework does something like what you want. They let you create an IDEA project with
[My first application] $ idea
So you can .gitignore the .idea/* folder and every developer can easily create their own IDEA project if they want to use an IDE.
Their documentation describes how you use it, so it should be easy enough to find the code that actually generates the project: https://www.playframework.com/documentation/2.0/IDE
I am new in Scala and I have to learn Scala and SBT, I read the sbt tutorial but i am unable to understand the use of sbt, for what purpose its been used.After reading this tutorial
I am still confused can any one will explain it in simple words, also suggest me if there is some tutorial for simple build tool
When you write small programs that consist of only one, or just two or three source files, then it's easy enough to compile those source files by typing scalac MyProgram.scala in the command line.
But when you start working on a bigger project with dozens or maybe even hundreds of source files, then it becomes too tedious to compile all those source files manually. You will then want to use a build tool to manage compiling all those source files.
sbt is such a tool. There are other tools too, some other well-known build tools that come from the Java world are Ant and Maven.
How it works is that you create a project file that describes what your project looks like; when you use sbt, this file will be called build.sbt. That file lists all the source files your project consists of, along with other information about your project. Sbt will read the file and then it knows what to do to compile the complete project.
Besides managing your project, some build tools, including sbt, can automatically manage dependencies for you. This means that if you need to use some libraries written by others, sbt can automatically download the right versions of those libraries and include them in your project for you.
I have recently completed the Scala course on Coursera, and since then I have been looking forward to getting my hands dirty with Scala again. I have written code for some years but I neither educated to be nor work as a programmer, so it took me a while to get a good opportunity but now that I have some time to invest and a good project to work on it's time...
Except I can't seem to get things set up properly, which I find really frustrating. I have OpenJDK 1.7.0_25 running on my Linux machine. I have downloaded and installed the Bundle Scala IDE build for Eclipse (just like we used in the course). And I got ScalaTest both as a jar file and the Eclipse plug-in.
I have a simple project (so far) and no matter what I do I can't seem to get my builds and tests in order. First off how exactly am I supposed to set up my project so that my classes and tests are actually run properly? All the assignments we got were projects that had the same structure, so do I have to have:
project
|--src
|--main
|--scala
|--test
|--scala
structure? If so why is it not the default way the project is setup when I create a new project? Do I create these folders manually, as packages or as source folders? The whole thing gets pretty murky..
I should mention that I tried to "Mavenize" the project using the contextual menu in Eclipse, added my ScalaTest dependency. The first thing that happens is that I get compile errors, at every point of dependency in my code. So clearly the library is not visible, in other words Maven does not seem to be doing much of management. I thought the whole point of Maven was to get and maintain dependencies as the project evolves. I concluded that I do not fully understand the way Maven works and thus I eventually gave up on Maven, once again, and went back to doing things manually.
Secondly, I can't seem to run my tests; the Run As... menu item does not include ScalaTest as it's mentioned in the documentation of ScalaTest Eclipse Plug-in. I have double checked that the plugin is installed. If I instead try to run using JUnitRunner then my tests are not recognized as valid tests. I have JUnit and ScalaTest on my build path, so it's got to be something else.
I suppose my overarching question is as follows:
given the Scala IDE build of Eclipse and ScalaTest, just exactly how am I supposed to set up my project (in Eclipse) so that I can just focus on writing my code and testing it, and hopefully not have any other headaches?
I work alone, and this project is not a product I need to deliver to some client. In other words I do not need to adhere to strict professionalism here. Honestly I just want to be able to code, get better acquainted with Scala and hopefully build a small data analysis tool that I will be using from time to time.
Thanks in advance!
Try using the sbt eclipse plugin:
https://github.com/typesafehub/sbteclipse
This is of course assumes that you use sbt as you build tool. If you don't at the moment you can find instructions on installation and usage here: http://www.scala-sbt.org/
Personally I've been using typesafe giter8 template (https://github.com/typesafehub/scala-sbt.g8) to setup my Scala projects, and then I use the sbt plugin mentioned above to generate eclipse project files.
Scala is somewhat Maven-based (sometimes implicitly), that's why you use that structure.
The easiest way I think is to create a simple Sbt/Maven POM and create the Eclipse project configurations (like with sbt eclipse). There you can set the dependencies (like the actual version of JUnit, Scalatest to use), so you can use the ScalaTest plugin easily.
In case of other issues, feel free to ask at the ScalaTest mailing list, Chee Seng and Bill Venners can help you a lot there.
The Scala IDE website has a full documentation on how to run unit testing frameworks with the IDE, have a look ! If you find missing elements, the bug tracker of the scala-IDE project is here.
I would like to use code that I wrote for one project in another project, and it seems like the best way to go about doing this is to use packages, but I'm not exactly sure how, and the documentation I found from my googling on this is pretty unclear. Should I sbt package and then copy the .jar into the project I want to use the code for? How does my build.sbt file need to augmented to do this? If the projects are in the same level directory, is there an easier way of doing this?
SBT has a publish-local command that will package and install you jar file in a local repository. Then you can reference you jar as you would any other dependency.
https://github.com/harrah/xsbt/wiki/Publishing