crossbow 0.0.11

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Dart Crossbow

Build Status

Crossbow is a library for building applications as a series of pipelines.

Crossbow principles:

  • Functions should never block
  • Code should be terse
  • Futures should be hidden
  • Defaults should be sensible
  • Prefer streams over lists


    | table(Trip).join(User), 
        where: (query, headers) =>
    | Convert.toJson()
    | Results.join(by: (headers, body) => headers['request'],
            as: JsonArray)

The example above will accept HTTP connections on port 8080 on the specified URL with placeholder 'username'. It will then perform a query for the type Trip using the path parameters. The results of the query will be streamed and converted to JSON as they come in. Then the results will be joined again by the request and streamed to the response as a JSON array.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  crossbow: ^0.0.11

2. Install it

You can install packages from the command line:

with pub:

$ pub get

Alternatively, your editor might support pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:crossbow/crossbow.dart';
Version Uploaded Documentation Archive
0.0.11 Mar 27, 2016 Go to the documentation of crossbow 0.0.11 Download crossbow 0.0.11 archive
0.0.10 Dec 1, 2015 Go to the documentation of crossbow 0.0.10 Download crossbow 0.0.10 archive
0.0.9 Dec 1, 2015 Go to the documentation of crossbow 0.0.9 Download crossbow 0.0.9 archive
0.0.8 Nov 25, 2015 Go to the documentation of crossbow 0.0.8 Download crossbow 0.0.8 archive
0.0.7 Nov 25, 2015 Go to the documentation of crossbow 0.0.7 Download crossbow 0.0.7 archive
0.0.6 Nov 25, 2015 Go to the documentation of crossbow 0.0.6 Download crossbow 0.0.6 archive
0.0.5 Nov 24, 2015 Go to the documentation of crossbow 0.0.5 Download crossbow 0.0.5 archive
0.0.4 Apr 21, 2015 Go to the documentation of crossbow 0.0.4 Download crossbow 0.0.4 archive
0.0.3 Apr 21, 2015 Go to the documentation of crossbow 0.0.3 Download crossbow 0.0.3 archive
0.0.2 Apr 21, 2015 Go to the documentation of crossbow 0.0.2 Download crossbow 0.0.2 archive

All 11 versions...

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Code health derived from static analysis. [more]
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Learn more about scoring.

The package version is not analyzed, because it does not support Dart 2. Until this is resolved, the package will receive a health and maintenance score of 0.

Analysis issues and suggestions

Fix dependencies in pubspec.yaml.

Running pub upgrade failed with the following output:

ERR: The current Dart SDK version is 2.0.0.
 Because crossbow depends on io <0.3.3 which requires SDK version <2.0.0, version solving failed.

Health suggestions

Format lib/crossbow.dart.

Run dartfmt to format lib/crossbow.dart.

Format lib/src/convert.dart.

Run dartfmt to format lib/src/convert.dart.

Format lib/src/core.dart.

Run dartfmt to format lib/src/core.dart.

Format lib/src/db.dart.

Run dartfmt to format lib/src/db.dart.

Format lib/src/http.dart.

Run dartfmt to format lib/src/http.dart.

Maintenance issues and suggestions

Add SDK constraint in pubspec.yaml. (-50 points)

For information about setting SDK constraint, please see

Fix platform conflicts. (-20 points)

Error(s) prevent platform classification:

Fix dependencies in pubspec.yaml.

Package is too old. (-100 points)

The package was released more than two years ago.

Maintain (-20 points)

Changelog entries help clients to follow the progress in your code.

The description is too short. (-20 points)

Add more detail about the package, what it does and what is its target use case. Try to write at least 60 characters.

Maintain an example. (-10 points)

Create a short demo in the example/ directory to show how to use this package. Common file name patterns include: main.dart, example.dart or you could also use crossbow.dart.

Package is pre-v0.1 release. (-10 points)

While there is nothing inherently wrong with versions of 0.0.*, it usually means that the author is still experimenting with the general direction of the API.