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• protobuf-net v2 alpha - problems with Dictionary<string,string>?

  - by Steve

  I was using a version of v2 of protobuf-net from a few weeks ago quite successfully. (I want to use V2 due to the speed of the pre-compiled serializer running on the Compact Framework.) Everything worked great until I tried to serialize an object with a property of type Dictionary. I received the following error: {"No serializer defined for type: System.Collections.Generic.KeyValuePair`2[[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]"} It looked like there were recent changes made to improve Dictionary support, so I grabbed the latest code from today. After building the CF3.5 and FF3.5 dlls, I tried again. Now I get a different error "The model cannot be changed once frozen." If I remove the ProtoMember attribute from the Dictionary property all seems to work well. Has anyone succcessfully used a Dictionary in v2 of protobuf-net? Is this still too early of a release to be using? My speed tests showed v2 being twice as fast, does that seem accurate (validating my desire to use the less stable v2 pre-alpha bits.)

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• Wordpress thumbnail creation question

  - by Will Ashworth

  I'm trying to use Wordpress' built-in thumbnailing and image re-sizing in my Wordpress 2.9.2 installation. I'm trying to get various sizes (post listing/results 160x160 & "single.php" 618x150) and for some reason the single.php one works, but only half way. Not sure if I'm doing something wrong here. I have it working…sorta. I’m totally stuck and there seems to be a lack of documentation on the Codex for this feature so here goes. The small 160×160 thumbnail for article listings/search views works fine. It crops it, all’s groovy. The issue comes when I go to format the image for the single.php article details view. It crops, but then scales down even further for some reason. Screenshot: http://c1319072.cdn.cloudfiles.rackspacecloud.com/4-15-2010%204-56-46%20PM.png NOTE: every time I re-test this I’m completely deleting the image from the media section and re-uploading the image entirely. I also have the re-create thumbnails plugin so I know it’s not caching. Here is my code included in "functions.php". This will help in debugging. add_theme_support( ‘post-thumbnails’ ); set_post_thumbnail_size( 160, 160, true ); // Normal post thumbnails add_image_size( ’single-post-thumbnail’, 618, 150, true ); // Permalink thumbnail size

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• How can I create a dynamic LINQ query in C# with possible multiple group by clauses?

  - by FordPrefect141

  I have been a programmer for some years now but I am a newcomer to LINQ and C# so forgive me if my question sounds particularly stupid. I hope someone may be able to point me in the right direction. My task is to come up with the ability to form a dynamic multiple group by linq query within a c# script using a generic list as a source. For example, say I have a list containing multiple items with the following structure: FieldChar1 - character FieldChar2 - character FieldChar3 - character FieldNum1 - numeric FieldNum2 - numeric In a nutshell I want to be able to create a LINQ query that will sum FieldNum1 and FieldNum2 grouped by any one, two or all three of the FieldChar fields that will be decided at runtime depending on the users requirements as well as selecting the FieldChar fields in the same query. I have the dynamic.cs in my project which icludes a GroupByMany extension method but I have to admit I am really not sure how to put these to use. I am able to get the desired results if I use a query with hard-wired group by requests but not dynamically. Apologies for any erroneous nomenclature, I am new to this language but any advice would be most welcome. Many thanks Alex

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• Signals and Variables in VHDL - Problem

  - by Morano88

  I have a signal and this signal is a bitvector. The length of the bitvector depends on an input n, it is not fixed. In order to find the length, I have to do some computations. Can I define a signal after defining the variables ? It is ggiving me errors when I do that. It is working fine If I keep the signal before the variables .. but I don't want that .. the length of Z depends on the computations of the variables. What is the solution ? library IEEE; use IEEE.STD_LOGIC_1164.ALL; use IEEE.STD_LOGIC_ARITH.ALL; use IEEE.STD_LOGIC_UNSIGNED.ALL; entity BSD_Full_Comp is Generic (n:integer:=8); Port(X, Y : inout std_logic_vector(n-1 downto 0); FZ : out std_logic_vector(1 downto 0)); end BSD_Full_Comp; architecture struct of BSD_Full_Comp is Component BSD_BitComparator Port ( Ai_1 : inout STD_LOGIC; Ai_0 : inout STD_LOGIC; Bi_1 : inout STD_LOGIC; Bi_0 : inout STD_LOGIC; S1 : out STD_LOGIC; S0 : out STD_LOGIC ); END Component; Signal Z : std_logic_vector(2*n-3 downto 0); begin ass : process Variable length : integer := n; Variable pow : integer :=0 ; Variable ZS : integer :=0; begin while length /= 0 loop length := length/2; pow := pow+1; end loop; length := 2 ** pow; ZS := length - n; wait; end process; end struct;

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• Erlang, SSH and authorized_keys

  - by Roberto Aloi

  Playing with the ssh and public_key application in Erlang, I've discovered a nice feature. I was trying to connect to my running Erlang SSH daemon by using a rsa key, but the authentication was failing and I was prompted for a password. After some debugging and tracing (and a couple of coffees), I've realized that, for some weird reason, a non valid key for my user was there. The authorized_keys file contained two keys. The wrong one was at some point in the file, while the correct one was appended at the end of the file. Now, the Erlang SSH application, when diffing the provided key with the ones contained in the authorized_keys, it was finding the first entry (completely ignoring the second on - the correct one). Then, it was switching to different authentication mechanism (at first it was trying dsa instead of rsa and then it was prompting for a password). The question is: Is this behavior intended or should the SSH server check for multiple entries for the same user in the *authorized_keys* file? Is this a generic SSH behaviour or it's just specific to the Erlang implementation?

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• Creating a class Hierarchy for Atoms,neutrons,protons,chemical reationc

  - by Smart Zulu

  I need help to create a program that can show the hierarchy of any Atoms and its components (neutrons,protons,electrons,and chemical reaction) Here is a code of what i have done so far,being a novice at the subject using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Atoms { public class Atoms { protected string name = "Sodium"; protected string element ="Metal"; public virtual void GetInfo() { Console.WriteLine("name: {0}",name); Console.WriteLine("element: {0}", element); } } class Proton : Atoms { public int number = 11 ; public override void GetInfo() { base.GetInfo(); Console.WriteLine("Proton number: {0}",number); } } class Electron : Atoms { public int number = 11; public override void GetInfo() { base.GetInfo(); Console.WriteLine("Electron number: {0}", number); } class Neutrons : Atoms { public int number = 12; public override void GetInfo() { base.GetInfo(); Console.WriteLine("Neutron number: {0}", number); } class TestClass { static void Main() { Proton P = new Proton(); P.GetInfo(); Neutrons N = new Neutrons(); N.GetInfo(); Electron E = new Electron(); E.GetInfo(); Console.WriteLine("click any key to exit"); Console.ReadLine(); } } } } }

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• Assembly reference from ASP.NET App_Code directory

  - by Gerald Schneider

  I have trouble getting a custom ObjectDataSource for an asp:ListView control to work. I have the class for the DataSource in the App_Code directory of the web application (as required by the asp:ListView control). using System; using System.Collections.Generic; using System.ComponentModel; using System.Configuration; using System.Data; using System.Data.Common; using System.Web; using System.DirectoryServices; [DataObject] public class UsersDAL { [DataObjectMethod(DataObjectMethodType.Select)] public List<User> LoadAll(int startIndex, int maxRows, string sortedBy) { List<User> users = new List<User>(); DirectoryEntry entry; return users; } } As soon as I add using System.DirectoryServices; the page crashes with this message: Compiler Error Message: CS0234: The type or namespace name 'DirectoryServices' does not exist in the namespace 'System' (are you missing an assembly reference?) Without the usage of System.DirectoryServices the page loads without problems. The reference is there, it is working in classes outside the App_Code directory.

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• How to arrange business logic in a Kohana 3 project

  - by Pekka

  I'm looking for advice, tutorials and links at how to set up a mid-sized web application with Kohana 3. I have implemented MVC patterns in the past but never worked against a "formalized" MVC framework so I'm still getting my head around the terminology - toying around with basic examples, building views and templates, and so on. I'm progressing fairly well but I want to set up a real-world web project (one of my own that I've been planning for quite some time now) as a learning object. I learn best by example, but example-based documentation is a bit sparse for Kohana 3 right now - they say so themselves on the site. While I'm not worried about learning the framework as I go along, I want to make sure the code base is healthily structured from the start - i.e. controllers are split nicely, named well and according to standards, and most importantly the business logic is separated into appropriately sized models. My application could, in its core, be described as a business directory with a range of search and listing functions, and a login area for each entry owner. The actual administrative database backend is already taken care of. Supposing I have all the API worked out and in place already - list all businesses, edit business, list businesses by street name, create offer logged in as business, and so on, and I'm just looking for how to fit the functionality into a MVC pattern and into a Kohana application structure that can be easily extended. Do you know real-life examples of "database-heavy" applications like directories, online communities... with a log-in area built on Kohana 3, preferably Open Source so I could take a peek how they do it? Are there conventions or best practices on how to structure an extendable login area for end users in a Kohana project that is not only able to handle a business directory page, but further products on separate pages as well? Do you know any good resources on building complex applications with Kohana? Have you built something similar and could give me recommendations on a project structure?

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• iPhone: Proper use of View and View Controller

  - by Joel

  I've recently been doing a lot of Objective-C programming, and just got back into doing more iPhone development. I've done a lot of programming using MVC in other languages/frameworks, but I just want to make sure I'm using MVC properly in my iPhone Development. I created a new iPhone Utility Application, which creates two views: MainView and FlipsideView. Both have a controller (FlipsideViewController and MainViewController) and XIB file of their own. What I've been doing is putting the IBOutlet UIControl myControl variables in my MainView.h or FlipsideView.h files and then tying the controls in Interface Builder to those variables. Then I put any IBAction SomeAction myAction methods in the MainViewController.h and FlipsideViewController.h files and tying the events to those methods in Interface Builder. This seems to be conceptually correct, but seems to cause problems. Say I have a button that when clicked it changes a label's text. So the Controller doesn't have a clue of what the variable name of the label is in the OnTouchUp event handler for my button. So I make a @property for it. But since the MainViewController.view property isn't of type MyView, I get warnings or errors whenever I try to access those properties from the view controller. I am doing this correctly? Is there a better way to do this? If this is correct, how do I properly work with those variables without getting warnings or errors? Thanks

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• Creating a framework for ASP.NET web forms similar to Flex states.

  - by Shawn Simon

  I really enjoy the flex states framework. You define a few states for your control, and then can set child controls to only appear in certain states. Check out this code: <s:states> <s:State name="signin"/> <s:State name="register"/> </s:states> <mx:FormItem label="Last name:" includeIn="register" id="lastNameItem" alpha="0.0"> <s:TextInput id="lastName" width="220"/> </mx:FormItem> Now the last name form will only appear in the register screen. This would be really useful I think in .NET where you use the page for views like update / insert. I was considering extending the Page element to have a states property using extension methods, and adding the include in to controls. This way I could auto-hide controls based on the current view at render time. What is even cooler in Flex, is that you can use different handlers / properties based on the current state. <s:Button label="Sign in" label.register="Register" id="loginButton" enabled="true" click.signin="signin()" click.register="register()"/> I'm sure there's a way I could implement something similar to this as well. Do you think this is a good idea? Or does it just add a level of abstraction to framework that already has a poor separation of concerns?

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• Grouped UITableView Footer Sometimes Hidden On Quick Scroll

  - by jdandrea

  OK, this one is a puzzler. There is one similar post but it's not similar enough to count, so I'm posting this one. :) I've got a grouped UITableView with a header and footer. The footer includes two UIButton views, side-by-side. Nothing major. Now … there is a toggle button in a UIToolbar at the bottom for more/less info in this table view. So I build my index paths to delete/insert with fade row animation, all the usual ingredients, sandwiched between beginUpdates and endUpdates calls on the UITableView … and this works fine! In also happens that my footer can sometimes be pushed off past the bottom of the display. Here's where it gets weird. If I drag my finger up the display, scrolling the view upward, I should see that footer eventually, right? Well … most of the time I do. BUT, if I flick my finger up, for a faster scroll, the footer is missing. Even if you try to tap in that area - no response. However, if I scroll back down again, just to hide that footer (or rather hide the area where the footer would normally be), and then scroll back up, it's there once again! This only happens when inserting rows. If I delete rows, the footer stays put … unless of course it was already hidden and I didn't perform the aforementioned incantation to get it back. :) I am trying to trace through this, but to no avail. I suppose tracing through scroll operations is a bit of a crazy proposition! Perhaps some creative logging … suggestions, anyone? Or is this a known issue in 3.1 where row insert/deletes are concerned? (I don't recall seeing it until 3.1.)

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• How to access application.xml file of an EAR deployed to IBM WebSphere 6.1

  - by Matt1776

  I am deploying an EAR file to the IBM WebSpehre server 6.1 - I want to be able to access the EAR application name which is stored in the deployment file under 'display-name'. Looking through stack overflow posts on related subjects, I've been able to gather that this is possible via the Java MBean API - or IBM's WAS API - Problem is I cannot find a place where these API lists are summarized, i.e. cannot figure out which one to begin looking at. I could hardcode the WAS install location and find the file by looking in the 'installedApps' directory, but this is not dynamic. Does anyone have any experience working with these APIs? Any other way to dynamically find the deployed EAR's display name? EDIT - I should add that the reason I would like this information is to dynamically load our properties files - that are named by the following convention "EARAppName.properties" - so you see there IS a reasonable 'rationale' behind desiring this information in my application EDIT 2 - I should also note that this app will always be deployed on a WAS - but in the case that it isnt, a generic non-proprietary solution would be preferred, but not necessary at this moment. EDIT 3 - What I want to accomplish: Is there a way to dynamically find the deployed EAR's display name from within the application code?

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• Using generics to make an algorithm work on lists of "something" instead of only String's

  - by Binary255

  Hi, I have a small algorithm which replaces the position of characters in a String: class Program { static void Main(string[] args) { String pairSwitchedStr = pairSwitch("some short sentence"); Console.WriteLine(pairSwitchedStr); Console.ReadKey(); } private static String pairSwitch(String str) { StringBuilder pairSwitchedStringBuilder = new StringBuilder(); for (int position = 0; position + 1 < str.Length; position += 2) { pairSwitchedStringBuilder.Append((char)str[position + 1]); pairSwitchedStringBuilder.Append((char)str[position]); } return pairSwitchedStringBuilder.ToString(); } } I would like to make it as generic as possible, possibly using Generics. What I'd like to have is something which works with: Anything that is built up using a list of instances. Including strings, arrays, linked lists I suspect that the solution must use generics as the algorithm is working on a list of instances of T (there T is ... something). Version of C# isn't of interest, I guess the solution will be nicer if features from C# version 2.0 is used.

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• Is ASP.NET MVC is really MVC? Or how to separate model from controller?

  - by Andrey

  Hi all, This question is a bit rhetorical. At some point i got a feeling that ASP.NET MVC is not that authentic implementation of MVC pattern. Or i didn't understood it. Consider following domain: electric bulb, switch and motion detector. They are connected together and when you enter the room motion detector switches on the bulb. If i want to represent them as MVC: switch is model, because it holds the state and contains logic bulb is view, because it presents the state of model to human motion detector is controller, because it converts user actions to generic model commands Switch has one private field (On/Off) as a State and two methods (PressOn, PressOff). If you call PressOn when it is Off it goes to On, if you call it again state doesn't change. Bulb can be replaced with buzzer, motion detector with timer or button, but the model still represent the same logic. Eventually system will have same behavior. This is how i understand classical MVC decomposition, please correct me if i am wrong. Now let's decompose it in ASP.Net MVC way. Bulb is still a view Controller will be switch + motion detector Model is some object that will just pass state to bulb. So the logic that defines behavior moves to controller. Question 1: Is my understanding of MVC and ASP.NET MVC correct? Question 2: If yes, do you agree that ASP.NET MVC is not 100% accurate implementation? And back to life. The final question is how to separate model from controller in case of ASP.NET MVC. There can be two extremes. Controller does basic stuff and call model to do all the logic. Another is controller does all the logic and model is just something like class with properties that is mapped to DB. Question 3: Where should i draw the line between this extremes? How to balance? Thanks, Andrey

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• Most efficient way to send images across processes

  - by Heinrich Ulbricht

  Goal Pass images generated by one process efficiently and at very high speed to another process. The two processes run on the same machine and on the same desktop. The operating system may be WinXP, Vista and Win7. Detailled description The first process is solely for controlling the communication with a device which produces the images. These images are about 500x300px in size and may be updated up to several hundred times per second. The second process needs these images to display them. The first process uses a third party API to paint the images from the device to a HDC. This HDC has to be provided by me. Note: There is already a connection open between the two processes. They are communicating via anonymous pipes and share memory mapped file views. Thoughts How would I achieve this goal with as little work as possible? And I mean both work for me and the computer. I am using Delphi, so maybe there is some component available for doing this? I think I could always paint to any image component's HDC, save the content to memory stream, copy the contents via the memory mapped file, unpack it on the other side and paint it there to the destination HDC. I also read about a IPicture interface which can be used to marshall images. What are your ideas? I appreciate every thought on this!

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• UITableView and UITableCellView, how does this work with core plot ?

  - by Luc

  Hello, I'm very new to iPhone programming, and I'm currently following tutos to understand the whole thing. I've been able to do what I needed (retrive data from a JSON http server, parse them with YAJL and plot the data in core plot). I have done this in a "simple" view where I have added a UILayerHostingView as requested by core-plot. I am now trying to follow this tuto: http://blogs.remobjects.com/blogs/mh/2010/01/26/p973 but I am missing the first part regarding the views... My understanding is that I need to create a view with a UITableView first. Then add a UITableCellView to make the first cell be able to contain the graph ? Is this right ? Where does the method "(id)initWithStyle:(UITableViewCellStyle)style" come from ? For my needs, only the first cell needs to contain a graph, I will put some other info in the other cells. As for now, I have created a new GraphListViewController, in the corresponding view I have added a listview but I do not see any auto generated methods regading cell customisation ? Do I need to implements DataSource in this controller and manually add some customisation methods ? Do I need to add a UITagbleViewCell to this UITableViewTable within IB ? Hope I am not getting to confusing... Thanks a lot for your help, Best Regards, Luc

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• WPF XAML references not resolved via myAssembly.GetReferencedAssemblies()

  - by WPF-it

  I have a WPF container application (with ContentControl host) and a containee application (UserControl). Both are oblivious of each other. Only one XML config file holds the string dllpath of the containee's DLL and full namespace name of the ViewModelClass inside the containee. A generic code in container resolves containee's assembly (Assembly.LoadFrom(dllpath)) and creates the viewmodel's instance using Activator.CreateInstance(vmType). when this viewmodel is hosted inside the ContentControl of the container, and relevant vierwmodel specific ResourceDictionary is added to ContentControl.Resources.MergedDictionaries of the content control of container, so the view loads fine. Now my containee has to host the WPF DataGrid using assembly reference of WPFToolkit.dll from my local C:\Lib folder. The Copy Local reference to the WPFToolkit.dll is added to the .csproj file of the containee's project and its only referred in the UserControl.XAML using its XAML namepsace. This way my bin\debug folder in my containee application, gets the WPFToolkit.dll copied. XAML: xmlns:Controls="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit" <Controls:DataGrid ItemsSource="{Binding AssetList}" ... /> Issue: The moment the ViewModel (i.e. the containee's usercontrol) tries to load itself I get this error. "Cannot find type 'Microsoft.Windows.Controls.DataGrid'. The assembly used when compiling might be different than that used when loading and the type is missing." Hence I tried to load the referenced assemblies of the containee's assembly (myAssembly.GetReferencedAssemblies()) before the viewmodel is hosted. But WPFToolkit isnt there in that list of assemblies! Strange thing is I have another dll referred called Logger.dll in the containee codebase but this one is implemented using C# code behind. So I get its reference correctly resolved in myAssembly.GetReferencedAssemblies(). So does that mean BAML references of assemblies are never resolvable by GetReferencedAssemblies?

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• How can I set the size of the gap between inline elements in CSS?

  - by Val M

  I am creating an MVC 1.0 form to use in multiple views. I have some elements that need to be shown on the same line, and I have done this by setting the display to "display: inline" for the style. I have also added the margin-left setting to the CSS in order to force the gap between the inline elements but this doesn't appear to be being set. My CSS has: fieldset label.inline { display: inline; margin-left: 2em; } The view code is: <fieldset> <legend>Details</legend> <p> <label for="StartTime">Start Time:</label> <%= Html.TextBox("StartTime", Model.StartTime.ToShortTimeString())%> <label for="NextDay" class="inline">Next Day?</label> <%= Html.CheckBox("NextDay") %> <%= Html.ValidationMessage("StartTime", "*")%> </p> </fieldset> Setting the size in the "margin-left" style has no impact on the space between the StartTime control and the NextDay label. How can I create this gap between the elements?

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• Data Access Layer, Best Practices

  - by labratmatt

  I'm looking for input on the best way to refactor the data access layer (DAL) in my PHP based web app. I follow an MVC pattern: PHP/HTML/CSS/etc. views on the front end, PHP controllers/services in the middle, and a PHP DAL sitting on top of a relational database in the model. Pretty standard stuff. Things are working fine, but my DAL is getting large (codesmell?) and becoming a bit unwieldy. My DAL contains almost all of the logic to interface with my database and is full of functions that look like this: function getUser($user_id) { $statement = "select id, name from users where user_id=:user_id"; PDO builds statement and fetchs results as an array return $array_of_results_generated_by_PDO_fetch_method; } Notes: The logic in my controller only interacts with the model using functions like the above in the DAL I am not using a framework (I'm of the opinion that PHP is a templating language and there's no need to inject complexity via a framework) I generally use PHP as a procedural language and tend to shy away from its OOP approach (I enjoy OOP development but prefer to keep that complexity out of PHP) What approaches have you taken when your DAL has reached this point? Do I have a fundamental design problem? Do I simply need to chop my DAL into a number of smaller files (logically divide it)? Thanks.

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• How to parse a custom XML-style error code response from a website

  - by user1870127

  I'm developing a program that queries and prints out open data from the local transit authority, which is returned in the form of an XML response. Normally, when there are buses scheduled to run in the next few hours (and in other typical situations), the XML response generated by the page is handled correctly by the java.net.URLConnection.getInputStream() function, and I am able to print the individual results afterwards. The problem is when the buses are NOT running, or when some other problem with my queries develops after it is sent to the transit authority's web server. When the authority developed their service, they came up with their own unique error response codes, which are also sent as XMLs. For example, one of these error messages might look like this: <Error xmlns:i="http://www.w3.org/2001/XMLSchema-instance"> <Code>3005</Code> <Message>Sorry, no stop estimates found for given values.</Message> </Error> (This code and similar is all that I receive from the transit authority in such situations.) However, it appears that URLConnection.getInputStream() and some of its siblings are unable to interpret this custom code as a "valid" response that I can handle and print out as an error message. Instead, they give me a more generic HTTP/1.1 404 Not Found error. This problem cascades into my program which then prints out a java.io.FileNotFoundException error pointing to the offending input stream. My question is therefore two-fold: 1. Is there a way to retrieve, parse, and print a custom XML-formatted error code sent by a web service using the plugins that are available in Java? 2. If the above is not possible, what other tools should I use or develop to handle such custom codes as described?

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• My First F# program

  - by sudaly

  Hi I just finish writing my first F# program. Functionality wise the code works the way I wanted, but not sure if the code is efficient. I would much appreciate if someone could review the code for me and point out the areas where the code can be improved. Thanks Sudaly open System open System.IO open System.IO.Pipes open System.Text open System.Collections.Generic open System.Runtime.Serialization [<DataContract>] type Quote = { [<field: DataMember(Name="securityIdentifier") >] RicCode:string [<field: DataMember(Name="madeOn") >] MadeOn:DateTime [<field: DataMember(Name="closePrice") >] Price:float } let m_cache = new Dictionary<string, Quote>() let ParseQuoteString (quoteString:string) = let data = Encoding.Unicode.GetBytes(quoteString) let stream = new MemoryStream() stream.Write(data, 0, data.Length); stream.Position <- 0L let ser = Json.DataContractJsonSerializer(typeof<Quote array>) let results:Quote array = ser.ReadObject(stream) :?> Quote array results let RefreshCache quoteList = m_cache.Clear() quoteList |> Array.iter(fun result->m_cache.Add(result.RicCode, result)) let EstablishConnection() = let pipeServer = new NamedPipeServerStream("testpipe", PipeDirection.InOut, 4) let mutable sr = null printfn "[F#] NamedPipeServerStream thread created, Wait for a client to connect" pipeServer.WaitForConnection() printfn "[F#] Client connected." try // Stream for the request. sr <- new StreamReader(pipeServer) with | _ as e -> printfn "[F#]ERROR: %s" e.Message sr while true do let sr = EstablishConnection() // Read request from the stream. printfn "[F#] Ready to Receive data" sr.ReadLine() |> ParseQuoteString |> RefreshCache printfn "[F#]Quot Size, %d" m_cache.Count let quot = m_cache.["MSFT.OQ"] printfn "[F#]RIC: %s" quot.RicCode printfn "[F#]MadeOn: %s" (String.Format("{0:T}",quot.MadeOn)) printfn "[F#]Price: %f" quot.Price

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• Is their a definitive list for the differences between the current version of SQL Azure and SQL Serv

  - by Aim Kai

  I am a relative newbie when it comes to SQL Azure!! I was wondering if there was a definitive list somewhere regarding what is and is not supported by SQL Azure in regards to SQL Server 2008? I have had a look through google but I've noticed some of the blog posts are missing things which I have found through my own testing: For example, quite a lot is summarised in this blog entry http://www.keepitsimpleandfast.com/2009/12/main-differences-between-sql-azure-and.html Common Language Runtime (CLR) Database file placement Database mirroring Distributed queries Distributed transactions Filegroup management Global temporary tables Spatial data and indexes SQL Server configuration options SQL Server Service Broker System tables Trace Flags which is a repeat of the MSDN page http://msdn.microsoft.com/en-us/library/ff394115.aspx I've noticed from my own testing that the following seem to have issues when migrating from SQL Server 2008 to the Azure: XML Types (the msdn does mention large custom types - I guess it may include this?? even if the data schema is really small?) Multi-part views I've been using SQL Azure Migration Wizard v3.1.8 to migrate local databases into the cloud. I was wondering if anyone could point to a list or give me any information till when these features are likely to be included in SQL Azure.

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• Delphi: Alternative to using Reset/ReadLn for text file reading

  - by Ian Boyd

  i want to process a text file line by line. In the olden days i loaded the file into a StringList: slFile := TStringList.Create(); slFile.LoadFromFile(filename); for i := 0 to slFile.Count-1 do begin oneLine := slFile.Strings[i]; //process the line end; Problem with that is once the file gets to be a few hundred megabytes, i have to allocate a huge chunk of memory; when really i only need enough memory to hold one line at a time. (Plus, you can't really indicate progress when you the system is locked up loading the file in step 1). The i tried using the native, and recommended, file I/O routines provided by Delphi: var f: TextFile; begin Reset(f, filename); while ReadLn(f, oneLine) do begin //process the line end; Problem withAssign is that there is no option to read the file without locking (i.e. fmShareDenyNone). The former stringlist example doesn't support no-lock either, unless you change it to LoadFromStream: slFile := TStringList.Create; stream := TFileStream.Create(filename, fmOpenRead or fmShareDenyNone); slFile.LoadFromStream(stream); stream.Free; for i := 0 to slFile.Count-1 do begin oneLine := slFile.Strings[i]; //process the line end; So now even though i've gained no locks being held, i'm back to loading the entire file into memory. Is there some alternative to Assign/ReadLn, where i can read a file line-by-line, without taking a sharing lock? i'd rather not get directly into Win32 CreateFile/ReadFile, and having to deal with allocating buffers and detecting CR, LF, CRLF's. i thought about memory mapped files, but there's the difficulty if the entire file doesn't fit (map) into virtual memory, and having to maps views (pieces) of the file at a time. Starts to get ugly. i just want Reset with fmShareDenyNone!

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• Convert query with system objects from SQL 2000 to 2005/2008

  - by Dan

  I have some SQL I need to get working on SQL 2005/2008. The SQL is from SQL 2000 and uses some system objects to make it work. master.dbo.spt_provider_types master.dbo.syscharsets systypes syscolumns sysobjects I know SQL 2005 does no longer use system tables and I can get the same information from views, but I am looking for a solution that will work for both SQL 2000 and 2005/2008. Any ideas? select top 100 percent TABLE_CATALOG = db_name(), TABLE_SCHEMA = user_name(o.uid), TABLE_NAME = o.name, COLUMN_NAME = c.name, ORDINAL_POSITION = convert(int, ( select count(*) from syscolumns sc where sc.id = c.id AND sc.number = c.number AND sc.colid <= c.colid )), IS_COMPUTED = convert(bit, c.iscomputed) from syscolumns c left join syscomments m on c.cdefault = m.id and m.colid = 1, sysobjects o, master.dbo.spt_provider_types d, systypes t, master.dbo.syscharsets a_cha /* charset/1001, not sortorder.*/ where o.name = @table_name and permissions(o.id, c.name) <> 0 and (o.type in ('U','V','S') OR (o.type in ('TF', 'IF') and c.number = 0)) and o.id = c.id and t.xtype = d.ss_dtype and c.length = case when d.fixlen > 0 then d.fixlen else c.length end and c.xusertype = t.xusertype and a_cha.type = 1001 /* type is charset */ and a_cha.id = isnull(convert(tinyint, CollationPropertyFromID(c.collationid, 'sqlcharset')), convert(tinyint, ServerProperty('sqlcharset'))) -- make sure there's one and only one row selected for each column order by 2, 3, c.colorder ) tbl where IS_COMPUTED = 0

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• Getting a "No default module defined for this application" exception while running controller unit t

  - by Doron

  I have an application with the default directory structure, for an application without custom modules (see structure figure at the end). I have written a ControllerTestCase.php file as instructed in many tutorials, and I've created the appropriate bootstrap file as well (once again, see figures at the end). I've written some model tests which run just fine, but when I started writing the index controller test file, with only one test in it, with only one line in it ("$this-dispatch('/');"), I'm getting the following exception when running phpunit (but navigating with the browser to the same location - all is good and working): 1) IndexControllerTest::test_indexAction_noParams Zend_Controller_Exception: No default module defined for this application Why is this ? What have I done wrong ? Appendixes: Directory structure: -proj/ -application/ -controllers/ -IndexController.php -ErrorController.php -config/ -layouts/ -models/ -views/ -helpers/ -scripts/ -error/ -error.phtml -index/ -index.phtml -Bootstrap.php -library/ -tests/ -application/ -controllers/ -IndexControllerTest.php -models/ -bootstrap.php -ControllerTestCase.php -library/ -phpunit.xml -public/ -index.php (Basically I have some more files in the models directory, but that's not relevant to this question.) application.ini file: [production] phpSettings.display_startup_errors = 0 phpSettings.display_errors = 0 includePaths.library = APPLICATION_PATH "/../library" bootstrap.path = APPLICATION_PATH "/Bootstrap.php" bootstrap.class = "Bootstrap" appnamespace = "My" resources.frontController.controllerDirectory = APPLICATION_PATH "/controllers" resources.frontController.params.displayExceptions = 0 resources.layout.layoutPath = APPLICATION_PATH "/layouts/scripts/" resources.view[] = phpSettings.date.timezone = "America/Los_Angeles" [staging : production] [testing : production] phpSettings.display_startup_errors = 1 phpSettings.display_errors = 1 [development : production] phpSettings.display_startup_errors = 1 phpSettings.display_errors = 1 resources.frontController.params.displayExceptions = 1 tests/application/bootstrap.php file <?php error_reporting(E_ALL); // Define path to application directory defined('APPLICATION_PATH') || define('APPLICATION_PATH', realpath(dirname(__FILE__) . '/../../application')); // Define application environment defined('APPLICATION_ENV') || define('APPLICATION_ENV', (getenv('APPLICATION_ENV') ? getenv('APPLICATION_ENV') : 'testing')); // Ensure library/ is on include_path set_include_path(implode(PATH_SEPARATOR, array( realpath(APPLICATION_PATH . '/../library'), // this project' library get_include_path(), ))); /** Zend_Application */ require_once 'Zend/Application.php'; require_once 'ControllerTestCase.php';

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