Ceylon M4 and Ceylon IDE M4 released!
You can download the Ceylon command line distribution here:
Or you can install Ceylon IDE from Eclipse Marketplace or from our Eclipse update site.
Ceylon M4 and Ceylon IDE M4 require Java 7.
The Ceylon team hopes to release Ceylon 1.0 beta in January.
M4 is an almost-complete implementation of the Ceylon language, including the following new features compared to M3:
- member class refinement (type families)
- class and interface aliases
- union and intersection aliases
- new syntax for package and module descriptors
- condition lists
- support for calling super-interface implementations of refined members
- maven repositories
- pluggable command-line tools, git-style
- better support for optional types in Java
- JDK/Jigsaw modules
- all-new API doc redesign
- more than 300 features and bug fixes
The following language features are not yet supported in M4:
- reified generics
- user-defined annotations, interceptors, and the type safe metamodel
This page provides a quick introduction to the language. The draft language specification is the complete definition.
Ceylon IDE is a complete development environment for Ceylon, based on the Eclipse platform. This release of Ceylon IDE introduces:
- module import completion,
- the brand new Ceylon Repository Explorer view,
- support for Maven repositories, and
- more than 30 other improvements and bug fixes.
Ceylon IDE M4 requires Java 7. Users of Ceylon IDE on Mac OS should install Eclipse Juno. Users on other platforms may run Ceylon IDE in either Eclipse Indigo or Eclipse Juno on Java 7. Ceylon IDE will not work if Eclipse is run on Java 6.
Interoperation with Java
Interoperation with Java code is robust and well-tested. As usual, this release fixes several bugs that affected Java interoperation in the previous release.
Contrary to previous releases, the JDK is no longer automatically imported, so you need to import the JDK using the modularised JDK module names as defined by Jigsaw (Java 9).
The following new platform modules are now available in Ceylon Herd:
ceylon.netprovides URI and HTTP support
ceylon.ioprovides charset and socket (blocking and non-blocking) support
ceylon.jsonprovides JSON parsing and serialization
ceylon.collectioncollection implementations organized into mutable array-based collections, mutable hashtable-based collections and immutable linked-list based collections
The language module,
ceylon.language is included in the distribution.
Modularity and runtime
The toolset and runtime for Ceylon are based around
archives and module repositories. The runtime supports a modular,
peer-to-peer class loading architecture, with full support for module
versioning and multiple repositories, including support for local and
remote module repositories, using the local file system, HTTP, WebDAV,
or even Maven repositories for interoperation with Java.
The source code for Ceylon, its specification, and its website, is freely available from GitHub:
Bugs and suggestions may be reported in GitHub's issue tracker.
The Ceylon community site includes documentation, the current draft of the language specification, the roadmap, and information about getting involved.
We're deeply indebted to the community volunteers who contributed a substantial part of the current Ceylon codebase, working in their own spare time. The following people have contributed to this release:
Gavin King, Stéphane Épardaud, Tako Schotanus, Emmanuel Bernard, Tom Bentley, Aleš Justin, David Festal, Flavio Oliveri, Max Rydahl Andersen, Mladen Turk, James Cobb, Tomáš Hradec, Michael Brackx, Ross Tate, Ivo Kasiuk, Enrique Zamudio, Julien Ponge, Julien Viet, Pete Muir, Nicolas Leroux, Brett Cannon, Geoffrey De Smet, Guillaume Lours, Gunnar Morling, Jeff Parsons, Jesse Sightler, Oleg Kulikov, Raimund Klein, Sergej Koščejev, Chris Marshall, Simon Thum, Maia Kozheva, Shelby, Aslak Knutsen, Fabien Meurisse, Paco Soberón, sjur, Xavier Coulon.