The Rust programming language by Mozilla

The Rust programming language by Mozilla.

From the Rust home page:

Rust is a curly-brace, block-structured expression language. It visually resembles the C language family, but differs significantly in syntactic and
semantic details. Its design is oriented toward concerns of “programming in the large”, that is, of creating and maintaining boundaries – both
abstract and operational – that preserve large-system integrity, availability and concurrency.

It supports a mixture of imperative procedural, concurrent actor, object-oriented and pure functional styles. Rust also supports generic programming
and metaprogramming, in both static and dynamic styles.

And a snippet from the Rust home page:

fn main() {
    let nums = [1, 2];
    let noms = ["Tim", "Eston", "Aaron", "Ben"];

    let mut odds = nums.iter().map(|&x| x * 2 - 1);

    for num in odds {
        do spawn {
            println!("{:s} says hello from a lightweight thread!", noms[num]);
        }
    }
}