Scala Native — Scala Native 0.5.8 documentation (original) (raw)
Version: 0.5.8
Scala Native is an optimizing ahead-of-time compiler and lightweight managed runtime designed specifically for Scala. It features:
- Low-level primitives.
import scala.scalanative.unsafe._
type Vec = CStruct3[Double, Double, Double]
def sum(vec: Ptr[Vec]): Double =
return vec._1 + vec._2 + vec._3
@main def main(): Unit =
val vec = stackallocVec // allocate c struct on stack
vec._1 = 10.0 // initialize fields
vec._2 = 20.0
vec._3 = 30.0
println(sum(vec)) // pass by reference
Pointers, structs, you name it. Low-level primitives let you hand-tune your application to make it work exactly as you want it to. You’re in control. - Seamless interop with native code.
import scala.scalanative.unsafe._
import scala.scalanative.unsigned._
@extern object stdlib {
def malloc(size: CSize): Ptr[Byte] = extern
}
val ptr = stdlib.malloc(32.toCSize)
Calling C code has never been easier. With the help of extern objects you can seamlessly call native code without any runtime overhead. - Instant startup time.
time hello-native
hello, native!
real 0m0.005s
user 0m0.002s
sys 0m0.002s
Scala Native is compiled ahead-of-time via LLVM. This means that there is no sluggish warm-up phase that’s common for just-in-time compilers. Your code is immediately fast and ready for action.
Documentation¶
This documentation is divided into different parts. It’s recommended to go through the User’s Guide to get familiar with Scala Native. Libraries will walk you through all the known libraries that are currently available. Contributor’s Guide contains valuable information for people who want to either contribute to the project or learn more about the internals and the development process behind the project.
Document built at : 2025-06-06