Question 1

How do I call a Java method from Idris using Idris JVM?

Accepted Answer

Idris JVM uses foreign function interface (FFI) mechanisms to interact with Java. Refer to the Idris JVM documentation for examples on importing Java classes and invoking methods, similar to Idris's standard FFI but tailored for JVM.

Question 2

Is Idris JVM better than Scala for functional programming on JVM?

Accepted Answer

Idris JVM is specialized for dependent types and pure functional programming, offering stronger type safety, while Scala is more mature with a larger ecosystem. Choose Idris JVM if you need dependent types; otherwise, Scala is more practical for general use.

Question 3

Can I use Spring Framework with Idris JVM?

Accepted Answer

Yes, through Java interoperability, but it requires writing Idris wrappers for Spring components, which can be complex. The project focuses on bytecode generation, so integration depends on manual FFI work and may lack idiomatic support.

Question 4

What are the performance implications of running Idris on JVM?

Accepted Answer

Performance is similar to other JVM languages but may have overhead from functional abstractions and dependent type erasure. Since it compiles to JVM bytecode, optimizations depend on JVM JIT, but benchmark specifics are not provided in the README.

Question 5

How to deploy Idris JVM applications in production?

Accepted Answer

Compile Idris code to executable JARs using the -o flag, then deploy like any JVM application. Ensure JVM is installed on the target server, and consider packaging dependencies, though library management might require custom scripting.

Question 6

Does Idris JVM support all Java versions like Java 17?

Accepted Answer

Support for specific JVM versions depends on the backend implementation; check the documentation or release notes for compatibility. Generally, it targets standard JVM bytecode, but new Java features might not be fully exposed.

idris-jvm

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