Interaction Rust with Julia

Rust and Julia are two promising languages focusing on speed, integrating them will help achieving great results.

Let's say we have the below Julia code, and we want to cal it from Rust code:

println("hello from Julia function")

Then we can call it using the below:

use std::process::Command; fn main() { println!("Hello from Rust"); let mut cmd = Command::new("Julia"); cmd.arg("main.jl"); match cmd.output() { Ok(o) => unsafe { println!("Output: {}", String::from_utf8_unchecked(o.stdout)); }, Err(e) => { println!("There was an error {}", e); } }
}

Then, the rust file can be executed by running cargo run:

From the other other hand, let's say we have the below rust file:

pub extern fn double_input(input: i32) -> i32 { println!("Hello from Rust"); input * 2
}

First we need to define proper cargo file to create the library, and calling cargo build:

[package]
name = "julia_call_rust"
version = "1.0.0"
authors = ["hasan yousef] [lib]
name = "my_rust_lib"
crate-type = ["dylib"]

Then the the functions in this lib can be called from Julia code as:

println("Hello from Julia")
input = 10 output = ccall( (:double_input, "target/debug/libmy_rust_lib"), Int32, (Int32,), input) println("As result of $input * 2 is: $output")

Then, by running cargo build to get the rust library built, and by running julia main.jl you'll get the required output.