MessagePack for D released

[tama]

On Tue, 27 Apr 2010 21:27:35 +0900, Lars T. Kyllingstad  
<public at kyllingen.nospamnet> wrote:

> Phobos should definitely have a serialisation module, and this seems to  
> me like a good candidate.  I haven't tried the code myself, but it looks  
> very clean and the examples are nice.
Thanks!

> I consider it a huge plus that it uses an existing format that already  
> has APIs for a bunch of programming languages.
I agree. At first, I checked several serialization libraries.
As a result, I select MessagePack with all things considered.
Other libraries and Specs seem to be large and complex.

> Two questions:
>
> The packer can write to an arbitrary ubyte output range, but it seems  
> the unpacker is limited to ubyte[] arrays.  Would it be possible to  
> unpack from an arbitrary input range?
No. Unpacker is possible to do so if D has integrated stream.
For your information, Other implementation(e.g. Java) uses InputStream.

> It doesn't seem to support the real type.  It this a limitation of the  
> MessagePack format or just an oversight?  Even if the format doesn't  
> directly support 80-bit floats, it should be possible to wrap them  
> somehow.
Good point. MessagePack doesn't define real type(80-bit float) because
some languages don't have real. But MessagePack has free format space,
so some implementation can support language-specific format.

real has environment-dependent problem. This problem causes loss of  
precision.
Unpacker can't be responsible for this problem. OK?

I will try to implement real support.