Dart language basics

dart_lang_basis.md

Dart Language Basics

Build from source

Follow the instructions on https://github.com/dart-lang/sdk/wiki/Building

Then run:

sudo apt-get install g++-multilib git python curl
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
export PATH="$PATH:$PWD/depot_tools"
mkdir dart-sdk
cd dart-sdk
fetch dart
cd dart-sdk/sdk
./tools/build.py --mode release --arch x64 create_sdk

The output will be in out/ReleaseX64/dart_sdk.

Package repository

https://pub.dartlang.org/

Building

One potential option is to build with build_runner https://github.com/dart-lang/build which works well with JavaScript target.

Or install the webdev tool:

pub global activate webdev

and then run:

webdev serve
webdev build

To build the JavaScript output file, use dart2js:

dart2js -o output.js source.dart

To run JavaScript on the server, run with the d8 preamble::

d8 <dart-sdk>/lib/_internal/js_runtime/lib/preambles/d8.js output.js

To install d8 try https://github.com/v8/v8

fetch v8
cd v8
gclient sync
tools/dev/gm.py x64.release

To create a standalone executable, update the pubspec.yaml to include:

executables:
  myexecutablefilename: nameofdartfile

Then to create the executable file:

pub global activate --source path <path to Dart project>

Pub will install executables into $HOME/.pub-cache/bin. All it really does is create a script to call pub run.

Example hello world

Example hello.dart program:

main() {
    print('hello');
}