CODEWITHSUNDEEP
scalainstallationsbt
zell
zell

Reputation: 10204

I have installed sbt, but still I do not get the REPL

I need to install the scala interpreter (aka repl). The official website https://scala-lang.org/download/ gives me instructions on how to install sbt. I have installed sbt, but still do not have the interpreter. What am I missing here? I am supposed to type scala followed by the Enter key.

[Edit] Someone suggested me to type "console" after sbt is running, but I got an error message

sbt:slides> console
[info] Compiling 1 Scala source to /Users/zell/slides/target/scala-2.12/classes ...
[error] /Users/zell/slides/examFakeSolution.scala:108:10: not found: value fpinscala
[error]   import fpinscala.monoids.Monoid
[error]          ^
[error] /Users/zell/slides/examFakeSolution.scala:128:45: not found: type Monoid
[error]   def foldBack[A] (l :List[A]) (implicit M :Monoid[A]) :A =
[error]
....

Upvotes: 1

Views: 243

Answers (2)

SCouto
SCouto

Reputation: 7928

If you have sbt, you have the REPL. You are doing it right, you can run sbt and then console or directly run sbt console

The error is a compilation error. Fix it first and then you'll be able to run the REPL in that folder.

When you run the REPL, sbt tries to compile the project first. So you can also run it in any folder other than the one from the project and it will work fine.

Upvotes: 1

Sergii Lagutin
Sergii Lagutin

Reputation: 10671

If you want start scala REPL inside SBT, type sbt firstly, then console

To start REPL without installing SBT, download the Scala from official site, add %SCALA_HOME%/bin to PATH and type scala in the terminal.

Upvotes: 1

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