Native · WebAssembly · Node

Fast programs, everywhere¶

A typed language that compiles to native binaries and WebAssembly.

import system;
import system.collections;

fun main() {
    let scores: Map<string, int> = {
        "Ada": 92, "Sam": 78
    };

    for (let entry in scores) {
        System.println($"{entry.key}: {entry.value}");
    }
}

Why Dream¶

Native and WebAssembly¶

One codebase builds a native executable, a browser module, or a Node module.

ARC that compiles away¶

Last-use moves, inferred borrows, and retain elision remove most reference counting at build time.

Seamless interop¶

Call C and C++ with @c and @cpp, and JavaScript with extern and the js type.

Typed web APIs¶

Compile-time routing, validation, authentication, OpenAPI, and WebSockets in the standard library.

Zero-cost generics¶

Generic code is specialized for each type you use, with no runtime dispatch.

Async and parallel¶

async/await for waiting work, Task for parallel CPU work, both owned by structured scopes.

GPU programming¶

Write compute, vertex, and fragment shaders in Dream for native and browser programs. Explore GPU programming.

Explore the docs¶

Learn

Install Dream, take the tour, and build your first project step by step.

6 pages

Language

Every Dream language feature, grouped by topic.

40 pages

Standard library

Collections, text, files, networking, JSON, time, and more.

36 pages

GPU and ML

Write shaders in Dream and run compute, graphics, and small neural networks on the GPU.

4 pages

Web server

Typed HTTP services with routers, validation, auth, OpenAPI, and WebSockets.

19 pages

Deploy

Package apps for desktop, browser, Node, and mobile, and publish packages.

8 pages

Tooling

Create, build, test, and manage projects with dreamer, plus editor and formatter setup.

11 pages

Cookbook

Small, complete programs you can run and change.

8 pages

API reference

Exact public declarations for every standard-library package.

29 pages