How to use third party libraries with Scala REPL?

Question

I\'ve downloaded Algebird and I want to try out few things in the Scala interpreter using this library. How do I achieve this?

Answer 1

This is an answer using Ammonite (as opposed to the Scala REPL) - but it is such a great tool that it is worth mentioning.

1. You can install it with a one liner such as:

sudo sh -c '(echo "#!/usr/bin/env sh" && curl -L https://github.com/lihaoyi/Ammonite/releases/download/2.1.2/2.13-2.1.2) > /usr/local/bin/amm && chmod +x /usr/local/bin/amm' && amm

or using brew on macOS:

brew install ammonite-repl  

For scala 2.10, you need to use an oder version 1.0.3:

sudo sh -c '(echo "#!/usr/bin/env sh" && curl -L https://github.com/lihaoyi/Ammonite/releases/download/1.0.3/2.10-1.0.3) > /usr/local/bin/amm && chmod +x /usr/local/bin/amm' && amm

2. Run Ammonite in your terminal:

amm
// Displays
Loading...
Welcome to the Ammonite Repl 2.1.0 (Scala 2.12.11 Java 1.8.0_242)

3. Use in ivy import to import your 3rd part library:

import $ivy.`com.twitter::algebird-core:0.2.0`

Then you can use your library within the Ammonite-REPL:

import com.twitter.algebird._
import com.twitter.algebird.Operators._
Map(1 -> Max(2)) + Map(1 -> Max(3)) + Map(2 -> Max(4))
...