Functional programming (FP) finally goes mainstream. It is not a new concept, but it is absolutely a complex one for beginners including me. I got exposed to a large set of references, online courses and books, and I will try to organize them in a useful way.
I enjoyed the talk given by Martin Odersky, which answer the two key questions with very simple code examples. The 15-minutes talk is Working Hard to Keep it Simple with slides on SlideShare.
A super quick start will be using Scastie, Scala in browser, to jump directy into Scala without installing anything.
You always can choose to work with an IDE such asIntelliJ with sbt, which you need to set up the environment in your local machine.
A third option is to user docker. Install docker and then use the docker image to launch Appache Zepplin which has mutiple interpreters supporting Spark, Scala, Python and other languages.
docker run -p 8080:8080 --rm --name zeppelin apache/zeppelin:0.7.3
logs and notebook directories, launch it with the following command:docker run -p 8080:8080 --rm -v $PWD/logs:/logs -v $PWD/notebook:/notebook -e ZEPPELIN_LOG_DIR='/logs' -e ZEPPELIN_NOTEBOOK_DIR='/notebook' --name zeppelin apache/zeppelin:0.7.3
After setting up the Cassandra Spark Connector with login, here is the new command:
docker run -p 8080:8080 --rm -d -v $PWD/interpreter.json:/zeppelin/conf/interpreter.json -v $PWD/logs:/logs -v $PWD/notebook:/notebook -e ZEPPELIN_LOG_DIR='/logs' -e ZEPPELIN_NOTEBOOK_DIR='/notebook' --name zeppelin apache/zeppelin:0.7.3
localhost：8080 to start your session. Information about Appache Zeppelin's UI can be found here.The documentation is always the first-hand source you need to explore. There is no better way to learn a programming language than getting your hands dirty in the codes. Of course, we need instructions and guidance. Here is a list of places that you can start: