galaaz (rubygems): Galaaz brings the power of R to the Ruby community. Galaaz  is based on TruffleRuby and FastR, GraalVM-based interpreters for Ruby and the R language  for statistical computing respectively.  Over the past two decades, the R language for statistical computing has emerged as the de  facto standard for analysts, statisticians, and scientists. Today, a wide range of  enterprises – from pharmaceuticals to insurance – depend on R for key business uses. FastR  is a new implementation of the R language and environment for the Graal Virtual Machine.  Galaaz tightly couples Ruby and R and allows the use of R inside a Ruby script. In a sense,  Galaaz is similar to other solutions such as RinRuby, Rpy2, PipeR, and reticulate  (https://blog.rstudio.com/2018/03/26/reticulate-r-interface-to-python/). However, since  Galaaz couples TruffleRuby and FastR that both target the JVM there is no need to integrate  both solutions and there is no need to send data between Ruby and R, as it all resides in  the same VM.   Further, installation of Galaaz does not require the installation of GNU R. When installing GraalVM, just install TruffleRuby and FastR. 
Keywords: fastr|graalvm|r|ruby|ruby-gem|ruby-library|rubydatascience|rubygems|truffleruby