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Παραθέτω το υλικό της σημερινής παρουσίασης για .NET, C# που είδαμε στο μάθημα Τεχνολογίας Λογισμικού (ευχαριστούμε τον καθηγητή Εμ. Γιακουμάκη που την πραγματοποιήσαμε επιτυχώς). Η παρουσίαση που διαδέχτηκε τη δική μου, από τον Μιχάλη Ζερβό, βρίσκεται εδώ . Και οι δύο, βρίσκονται στο e-class του μαθήματος. Στην παρουσίασή μου, προσπάθησα να δώσω όσες περισσότερες ιδέες μπορούσα (στο σύντομο χρονικό διάστημα της μίας ώρας) αναδεικνύοντας την εκφραστικότητά της και τις δυνατότητες που έχει. Καλύφθηκαν αρκετά Διαβάστε περισσότερα »...
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I have never really release a stable version through this blog of the module that allows you to create dynamic types through templating and scripting, so I am doing it now that the code is stable enough. To get the code read http://apobekiaris.blogspot.com/2009/10/how-to-get-expand-latest-version.html New Features eXpand Application Solution project item template John Pouliezos created a better design experience for all eXpand users by adding a New Project Item template. Using the above template you do not have to worry any more about setting up assembly references or registering modules/ persistent classes To install the template run the vs_setup.cmd batch file located at the root of eXpand folder after running buildall.cmd. You may want to uncomment Διαβάστε περισσότερα »...
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Watching Vittorio Bertocci 's Windows Identity Foundation (WIF) introductory talk at PDC as well as the recording of the excellent talk Microsoft Architect Hervey Wilson gave on this subject at PDC09 brought back wonderful memories of long discussions (and arguments ;-)) I had with Stelios, Manolis, Dimos and Stavros back when I was working at DOL, on Federated identity and Microsoft’s Διαβάστε περισσότερα »...
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It’s been a while since my last post, but things have been pretty hectic trying to set up and start my new business. Thankfully things are going great so you’re going to be hearing more about Techaholics in the near future ;-). Yes Techaholics is the name I think best represents what my Friend Panos talked about a few years back (now that I look at it we’ve come up with a name almost Διαβάστε περισσότερα »...
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Recently at MSDN Forums there were people asking how they can detect if their web application is running on the cloud or locally (Dev Storage). Well besides the obvious part, if you have code inside a Web Role or a Worker Role Start() method, this only exists on a cloud template but what if you want to make that check somewhere else, for example inside a Page_Load method or inside a library (dll)? If you’re trying to detect it on the “UI” level, let’s say Page_Load, you can simply check your headers. Request.Headers["Host"] will do the trick. If it’s “localhost” or whatever you like it to be to can be used to determine if it’s running local. But how about a Library? Are there any alternatives? Well, it’s not the most bullet proof method, but it served me well until now and I don’t think it’s going to stop working as it’s a fundamental architecture element of Windows Azure. There are specific Environment properties that are raising a SecurityException as you’re not allowed to read them. One of them is MachineName....
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Από το labs.opengov.gr : Ανοικτό κάλεσμα – Ανασχεδιάζουμε… Ποιος είναι κατάλληλος για να σχεδιάσει μια δημόσια υπηρεσία; Ποιος είναι κατάλληλος για να την αξιολογήσει: να κρίνει αν εξυπηρετεί τους χρήστες, αν δημιουργεί αποκλεισμούς, αν προωθεί την διαφάνεια; Στο πλαίσιο της ανοικτής διακυβέρνησης, η νέα κυβέρνηση προτίθεται να αξιοποιήσει τις εμπειρίες και την δημιουργικότητα των χρηστών Διαβάστε περισσότερα »...
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Στον δικτυακό τόπο του Υπ. Παιδείας, Δια Βίου Μάθησης και Θρησκευμάτων ( http://www.ypepth.gr/docs/blogs_100104.doc ) έχει αναρτηθεί η παρακάτω ανακοίνωση αναφορικά με την ηλεκτρονική διαπίστευση ιστολογίων (blogs): Ηλεκτρονική Διαπίστευση ιστολογίων (blogs) Στο πλαίσιο των κυβερνητικών δεσμεύσεων για το νέο ρόλο του διαδικτύου σε ζητήματα ενημέρωσης, επικοινωνίας και διαφάνειας αλλά Διαβάστε περισσότερα »...
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You’re trying to create a queue on Windows Azure and you’re getting a “400 Bad Request” as an inner exception. Well, there are two possible scenarios: 1) The name of the queue is not valid. It has to be a valid DNS Name to be accepted by the service. 2) The service is down or something went wrong and you just have to re-try, so implementing a re-try logic in your service when initializing is not a bad idea. I might say it’s mandatory. The naming rules A queue name must start with a letter or number, and may contain only letters, numbers, and the dash (-) character. The first and last letters in the queue name must be alphanumeric. The dash (-) character may not be the first or last letter. All letters in a queue name must be lowercase. A queue name must be from 3 through 63 characters long. More on that here . Thank you, PK....
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Windows Azure training kit it the best starting point if you want to get involved in Azure development. It helps you understand the basics of Windows Azure, its components and the whereabouts of the service. December’s release includes some updates and samples from PDC 09 so don’t miss it. You can download the kit from here –> http://www.microsoft.com/downloads/details.aspx?FamilyID=413E88F8-5966-4A83-B309-53B7B77EDF78&displaylang=en PK....
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Happy new year everybody. I wish you all the best for 2010. Now that I’m back I’m going to continue posting on Windows Azure. I had some really good rest during holidays and I really enjoyed xmas this time. I hope you did too! PK....
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Σήμερα (1/1/2010) έλαβα ένα mail από το MVP Program το οποίο με ενημέρωνε ότι έγινα MVP στον SQL Server. Ήταν το πρώτο και μοναδικό mail που πήρα για το 2010 και με γέμισε χαρά, ικανοποίηση αλλά και υποχρεώσεις για το μέλλον. Θα ήθελα να ευχαριστήσω όλους σας για αυτό και ιδιαίτερα τον Νάσο Κλαδάκη και την Μάρθα Πετροπούλου για την βοήθεια τους και την προτροπή τους στο να προσπαθήσω για τον τίτλο αυτό. ΚΑΛΗ ΧΡΟΝΙΑ ΣΕ ΟΛΟΥΣ...
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Hello again,
I want to wish all a very happy new year and let’s all forget 2009 which has been a very difficult year for most people around the globe.
I have received some very good news from Microsoft. They have presented me with an ASP.NET MVP. This is a big honor and a big responsibility for [...] Διαβάστε περισσότερα »...
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Εύχομαι σε όλους Καλή Χρονιά, με υγεία, επιτυχίες σε προσωπικό και επαγγελματικό επίπεδο και μακάρι η φετινή χρονιά να είναι γεμάτη χαρμόσυνα νέα. Διαβάστε περισσότερα »...
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Technics and policy about the back button. more...
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In the previous post , we have talked about drawing and moving 2D textures on the XNA window. In this post, we will explore the basic architecture that XNA uses in order to separate the game logic from the sprite logic. So prior to reading this post, it is suggested to go through the previous one. The main code smell there, was the fact that we had to put all the game logic for moving the Ivan sprite to the Update and Draw methods of the game loop. Imagine how messed up those too methods would look if we placed Διαβάστε περισσότερα »...
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At the latest event an issue was raised about dependency at runtime. more...
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I'm including job descriptions for both positions Microsoft, as an innovator of technologies, products and solutions, touches the lives of people all over the world and helps to realize the potential of individuals and communities alike. This is a very human business and one that encourages self-expression, opinion and input from each and every one of our employees. Microsoft is Διαβάστε περισσότερα »...
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I'm including job descriptions for both positions Microsoft, as an innovator of technologies, products and solutions, touches the lives of people all over the world and helps to realize the potential of individuals and communities alike. This is a very human business and one that encourages self-expression, opinion and input from each and every one of our employees. Microsoft is Διαβάστε περισσότερα »...
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XERP is an open source movement in order to create a .Net profitable enviroment. eXpand is serving the same goal and did a presentation of current state eXpand at 1st XERP meeting. I have demo the creation of a simple domain without writing any code. The modules used in the session WorldCreator for runtime Domain objects modelling + any custom scripting required to achieve the goal AdditionalViewsControlProvider for disaplying controls and bound them to domain objects ModelDifference module to configure the application model . ModelArtifact to make conditional a behaviour expressed by a controller Διαβάστε περισσότερα »...
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Well as mentioned in my previous post last Tuesday I had the chance to speak about Prism and Unity at a DotNetZone event. I believe the talk went really well, at least the attendees seemed very interested in those two frameworks. Unfortunately time was rather short for covering both topics so I feel I need to apologize for going a bit too fast. Anyway I’m putting up my slide deck and Διαβάστε περισσότερα »...
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Μετά από αρκετές αποτυχημένες προσπάθειες, στο να συνδυάσω Type constructor polymorphism και LINQ syntax, αποφάσισα να δοκιμάσω τις ίδιες ιδέες σε F#. Η F# υλοποίηση είναι ακριβώς ίδια με την αντίστοιχη σε C#, με την μονη διαφορα ότι το Monad generalization δουλεύει με το ειδικό syntax support που μας παρέχουν τα computation expressions. [<AbstractClass>] type MonadDef<'M when 'M :> MonadDef<'M>>() as this = let (>>=) m f = this .Bind(m, f) let unit v = this .Return v abstract member Return<'T> : 'T -> IMonad<'T,'M> abstract member Bind<'T, 'S> : IMonad<'T,'M> * ('T -> IMonad<'S,'M>) -> IMonad<'S,'M> member this .Then<'T, 'S>(firstM : IMonad<'T, 'M>, secondM : IMonad<'S, 'M>) : IMonad<'S, 'M> = firstM >>= fun _ -> secondM member this .Map<'T, 'S>(f : 'T -> 'S, m : IMonad<'T, 'M>) : IMonad<'S, 'M> = m >>= fun v -> unit (f v) member this .Apply<'T, 'S>(mf : IMonad<'T ->...
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Welcome to a short introduction in game Development using the XNA Framework! Let's start with the basics by examining how different is Windows programming to XNA Game programming. As we know, windows programming is "event driven". This means that our logic resides in event handlers that get called when a resource or a Control needs to tell us that something happened. So our program is nothing more than a loop that awaits for events to happen and a bunch of event handlers that respond to those events. Διαβάστε περισσότερα »...
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