Re: [Vala] [ANNOUNCE] Vala 0.7.0 - Compiler for the GObject type system

[Yu Feng <rainwoodman gmail com>]

Hi Jürg,

On Sun, 2009-04-05 at 17:54 +0200, Jürg Billeter wrote:
> We are pleased to announce version 0.7.0 of Vala, a compiler for the
> GObject type system.
>
> Vala 0.7.0 is now available for download at:
>    http://download.gnome.org/sources/vala/0.7/
>
> Changes since 0.6.0

>  * Do not generate header files unless requested by the -H commandline
>    option. This requires changes in the build system of Vala projects.
Are there any references on how to port a project to the new header
schema?

>  * Support conditional compilation.
and the usage of the conditional compilation?
 
> Vala is a new programming language that aims to bring modern programming
> language features to GNOME developers without imposing any additional
> runtime requirements and without using a different ABI compared to
> applications and libraries written in C.
>
> valac, the Vala compiler, is a self-hosting compiler that translates
> Vala source code into C source and header files. It uses the GObject
> type system to create classes and interfaces declared in the Vala source
> code.
>
> The syntax of Vala is similar to C#, modified to better fit the GObject
> type system. Vala supports modern language features as the following:
>
>         * Interfaces
>         * Properties
>         * Signals
>         * Foreach
>         * Lambda expressions
>         * Type inference for local variables
>         * Generics
>         * Non-null types
>         * Assisted memory management
>         * Exception handling
>
> Vala is designed to allow access to existing C libraries, especially
> GObject-based libraries, without the need for runtime bindings. All that
> is needed to use a library with Vala is an API file, containing the class
> and method declarations in Vala syntax. Vala currently comes with
> bindings for GLib and GTK+. It's planned to provide generated bindings for
> the full GNOME Platform at a later stage.
>
> Using classes and methods written in Vala from an application written in
> C is not difficult. The Vala library only has to install the generated
> header files and C applications may then access the GObject-based API of
> the Vala library as usual. It should also be easily possible to write a
> bindings generator for access to Vala libraries from applications
> written in e.g. C# as the Vala parser is written as a library, so that
> all compile-time information is available when generating a binding.
>
> More information about Vala is available at
>
>         http://live.gnome.org/Vala
>
>
> The Vala Team
>
>         Jürg Billeter and Raffaele Sandrini
>
>
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