I have used Microsoft StreamInsight in C#.
Does Microsoft StreamInsight also support for C++?
No, but I have seen where C++ was used in some UDOs and USDOs. I don't recommend it though because you can take a hit on the managed/unmanaged transitions.
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I have some programs (.prg) that operate using .dbf files, as i am migrating to postgresql (personal preferences) i really would like to know if there are ways to "translate" commands from one language to another.
Translating to python would be another possibility
Thank you
There isn't. Visual FoxPro the language is fairly tightly tied into its own object model, and when you start bringing UI elements into the equation the time and work involved in automatic migration means that it's always quicker to re-implement on the new platform.
If you're interested in Python you could take a look at Dabo. This is a Python framework aimed at desktop and web apps, but developed by some long-time Visual FoxPro experts. In that respect it is conceptually similar to Visual FoxPro in a lot of ways.
Dabo's authors, Ed Leafe and Paul McNett, have strong backgrounds in
database application development using the awesome and underrated
Microsoft Visual FoxPro development environment.
While Visual FoxPro shines at developing data-centric applications, it
has one limitation that cannot be ignored: it only runs on Microsoft
Windows, and Ed and Paul both have clients that want their
applications to run on Linux and Macintosh. We are sure we are not
alone in this regard: it is a multi-platform world with more diverse
needs than one vendor can fulfill.
Ed and Paul got to talking one day: Paul had been researching various
multiplatform GUI toolkits for about 18 months, and Ed has lots of
experience developing the Visual FoxPro Codebook framework. We decided
to work together to make a framework for developing robust
data-centric applications for multi-platform deployment. We've come up
with a design that is simple, flexible, and robust, and we've begun
developing our own client applications using the Dabo framework.
We were using IronRuby in our applications for some simple scripting of biz logic and rules.
We are trying to upgrade everything to .NET 4.5 - and our ScriptRuntime/IronRuby code is not happy with that. It does not lok like IronRuby has had a lot of traction lately, so we are wondering what would be a good scripting engine to switch to that is best supported by a .NET 4.5 environment. We prefer simple - the less third-party stuff we have to bring in the better. OUr scripts are also simple - not a big effort to convert.
Suggestions?
If converting your scripts to C# isn't a problem, I would recommend looking into the Microsoft "Roslyn" CTP and its Scripting API.
Because the .NET compiler developers are currently rebuilding their compilers in the Roslyn architecture and the Visual Studio team intends to consume the Roslyn compilers in the future, it's a safe bet that support for this scenario will remain for quite some time.
If you're not looking to consume the Roslyn architecture, you could also leverage Windows PowerShell by writing a custom host application that can execute PowerShell scripts that contain your business logic.
I am trying to port an existing, large-scale, multi-platform library to Win8 Metro, but got blocked by some removed APIs. Browsing the documentation and looking into some code samples did not help, I still cannot find a simple, reliable alternative for the missing GetAddrInfoW and getaddrinfo functions. Can anyone tell, what the proposed alternative is for these removed functions? AM I just overlooking something in the docs? Thank You,
György
Are you sure, that those functions really do not exist anymore? The winsock docs specifically mention that GetAddrInfoW was actually extended in Windows 8 Consumer Preview, and not removed.
Quote: "On Windows 8 Consumer Preview and Windows Server 8 Beta, the GetAddrInfoW function provides support for IRI or Internationalized Domain Name (IDN) parsing applied to the name passed in the pNodeName parameter. Winsock performs Punycode/IDN encoding and conversion. This behavior can be disabled using the AI_DISABLE_IDN_ENCODING flag discussed below."
Edit: Looking at it again it says at the top of the document that it only applies to desktop applications. For Metro Apps winsock2 seems to be unavailable and without an equivalent alternative for those two functions. At least i couldn't find one.
Any idea what language Citrix products are written in? (XenApp, formerly Metaframe and Presentation Server), XenDesktop, etc? I've been wondering this for years.
AFAIK, C, OCaml, Python.
OCaml and Python are mentioned there: http://caml.inria.fr/pub/ml-archives/caml-list/2009/07/36fee5f2c665901f2dc7d1b647c4eace.en.html.
I agree with the previous answer. Also, recent releases use C#. Notice how the NET Framework is a requirement for most of the Citrix installers. The web components are written in a combination of languages and frameworks including Javascript, ASP NET, and C#. The classic management console is written in Java and I think that most of the command line tools are written in C++.
What semantic web frameworks are there, and what are the advantages / disadvantages of each? I've made extensive use of Jena, and I have looked at Sesame briefly. Are there others I should consider as well?
Redland is a good RDF framework (just like Andreas said). I am mainly using its Python bindings and am installing it on Mac OS X via MacPorts (e.g., port install redland-bindings +python).
You could use it with other languages too (see its bindings for Perl, Ruby, ...).
For pointers to some larger lists of RDF frameworks see Semantic Web FAQ: Tools.
a more low-level appproach is redland, which provides bindings to a lot of languages like Perl, PHP, Python and Ruby. redland itself is written in C. i have scripted with it in ruby to provide a simple webservice with a rdf backend instead of a classic database.
http://www.cubicweb.org is a semantic web framework written in Python. It can be used to develop applications that serve content both to humans and computers, providing each with the format it asks for.
This question may be related to what-are-some-good-java-rdf-libraries
I would definitely take a look at Intellidimensions offerings if you are working on the Microsoft stack of technologies.
They have a mature SQL Server based framework for storing and processing (with rules) semantic web data. They also have a great .NET SDK that I have used extensively.
If you are using Java, and are interested in OWL inferencing, you should look at Pellet. It has bindings to Jena and the OWL-API, which itself, is a useful semweb framework.
The most web-centric I've seen so far is RAP (RDF API for PHP).