Purely functional programming on the JVM

Functional programming needs functions, side-effect free transformations, to enable lazy evaluation, memoization, function composition, and safe concurrent execution.

Frege is the only JVM language that provides this purity. It is a Haskell that runs on Java and interoperates with Java in a safe way: by rigidly requiring the demarcation of all effects that Java code may have.

In this session, you will experience many advantages of a purely functional language and how you can fully exploit them in your Java application.