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  • Does the chunk of the System.Collections.Concurrent.Partitioner need to be thread safe?

    - by Scott Chamberlain
    I am working with the Parallel libraries in .net 4 and I am creating a Partitioner and the example shown in the MSDN only has a chunk size of 1 (every time a new result is retrieved it hits the data source instead of the local cache. The version I am writing will pull 10000 SQL rows at a time then feed the rows from the cache until it is empty then pull another batch. Each partition in the Partitioner has its own chunk. I know every time I call to the IEnumerator in from the SQL data-source that needs to be thread safe but for use in a Parallel.ForEach do I need to make every call to the cache for the chunking thread safe?

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  • How can I capture multiple matches from the same Perl regex?

    - by Sho Minamimoto
    I'm trying to parse a single string and get multiple chunks of data out from the same string with the same regex conditions. I'm parsing a single HTML doc that is static (For an undisclosed reason, I can't use an HTML parser to do the job.) I have an expression that looks like: $string =~ /\<img\ssrc\="(.*)"/; and I want to get the value of $1. However, in the one string, there are many img tags like this, so I need something like an array returned (@1?) is this possible?

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  • How do I create regex groups for replacement?

    - by resting
    I have this sample string: Image: SGD$45.32 SKU: 3f3f3 dfdfd grg4t BP 6yhf Pack Size: 1000's Color: Green Price: SGD$45.32 SGD$45... I would like to remove all the prices namely: SGD$45.32 Price: SGD$45.32 SGD$45 I have this expression thats supposed to match the 3 groups: $pattern = '/(Price.+\sSGD\$\d+\.\d{2})(SGD\$\d+\.\d{2})(SGD\$\d+)/'; $new_snippet = preg_replace($pattern, '', $snippet);` But apparently its not working. It works if I replace a single group at a time. But, I'd like to know if it possible to replace all possible matching groups with a single statement. Tried preg_match_all($pattern, $snippet, $matches); to show matches based on the above pattern, but no matches are found if I put all 3 groups together.

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  • Virtual camera/direct show filter for network stream

    - by Jeje
    Hi guys, i'm working with Flash Live Encoder. It's using camera for streaming video. Support forum say's that i can create custom direct show filter and stream data that i need. I cann't understand how direct show filter will display in the source list of the live encoder. I've tryed to use some commercial virtual camera and it work's fine, but it cann't use source from network stream. Summary. I have a several network streams. I think that i must to create virtual camera for each one. But if i find examples with direct show filter on C#, i cann't find for virtual camera.

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  • NetBeans ("6.8" and "later") - UML support?

    - by Petike
    Hello, I wanted to download the "UML plugin" to NetBeans through the "Tools/Plugins" but I didn't find the plugin there. Then I read in many articles that the "NetBeans UML plugin is not supported anymore" :-( . Then I discovered that there exists some "NetBeans SDE" tool that supports the UML in NetBeans and there exists the "Comunity Edition" of that tool which is free, but only for "non-commercial" uses - so it's not open-source - and so I don't want to use it. So I would like to ask, if Sun (or whoever else who officially maintains (or maintained in the past) the NetBeans UML plugin) is not going to support the UML plugin to NetBeans anymore and if so, is there any "open-source" UML plugin which is supported in version "6.8" and "later" and if so - which? Thank you.

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  • jQuery, drop image on overlaping target

    - by Cinaird
    I am using jQuery to detect drop on target, the target in question is a image. If i drag one image upon another, and then drop it, it shall replace the target source with the dropped source. This works fine until two images lies upon each other. Some of the images lies next to each other and some times the target images overlap. if i drop, both the visible image and the image beneath is replaced with the dragged image. I hope the problem is clear and their is any good solution

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  • turning on Greasemonkey live editing

    - by Delirium tremens
    On Firefox, I click Tools, Addons, Extensions, Greasemonkey, Options, select my user script, click Edit, change the source code, reload one of the included pages, but the script is the unchanged version. On User Scripts, logged in, I click my username, Script Management, my script's name, Admin, Edit Code Online, change the source code, click save, the link to the install page, install and the script is the changed version. How did you turn on Live Editing? While following Greasemonkey tutorials, this feature is not working... Are you going to use the "works on my computer" excuse? Should this be on the Stack Overflow sister site Super User?

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  • Sphinx non-fulltext, integer only search

    - by James
    Hello guys, I've got a few tables that literally only hold integers, no "words" and for some reason Sphinx is unable to hold this data in it's library. Just returns "0 bytes" errors for these indexes. Is it possible to do this? If so, how? Below is an example from my Sphinx.conf for one that fails. source track { type = mysql sql_host = host sql_user = user sql_pass = pass sql_db = db sql_port = port sql_query = SELECT id, user, time FROM track; sql_attr_uint = user sql_attr_uint = time sql_query_info = SELECT * FROM track WHERE id=$id } index track { source = track path = /var/lib/sphinx/track docinfo = extern charset_type = utf-8 min_prefix_len = 1 enable_star = 1 }

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  • How does one bind to an List<DataRow> collection in WPF XAML?

    - by Elan
    Using a DataTable or DataView, one can specify the binding in XAML for example as follows: <Image Source="{Binding Thumbnail}" /> In my case I have created a List collection of DataRow objects and the above is not working. This is my data source: List<DataRow> I could of course convert the List< to a DataTable, but I am curious if there was a way to specify the binding in XAML to access the "Thumbnail" column within the DataRow that is stored in a List< collection. Elan

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  • msvsmon is locking up my pdbs

    - by Sam Saffron
    During developement of my media center plugin (which has a few custom build steps to gac stuff and such) msvsmon has a rather annoying behaviour. First compilation usually goes well, but subsequent compilations complain about myplugin.pdb being locked Error 1 Unexpected error creating debug information file 'C:\Users\sam\source\myfile.PDB' -- 'C:\Users\sam\source\obj\Debug\myfile.pdb: The process cannot access the file because it is being used by another process. If I exit VS and nuke the object directory, I am able to compile again. Also, if I kill off msvsmon.exe I am able to compile again (but can not debug) Has anyone seen this error? Are there any workarounds? I already disabled live semantic errors, just in case.

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  • error when calling the webservice

    - by xrx215
    i am getting a list of pagepack assistant by calling a webservice. I have added the web reference. using org.xerox.xde3.na.sdi.amiller_v_vista; public org.xerox.xde3.na.sdi.amiller_v_vista.DDCControl proxy; in page load method i am calling the web method as follows proxy = new DDCControl(); Guid y = new Guid("45a5b1c2-2fa5-4136-abdd-bc213b694848"); DataList1.DataSource = proxy.GetAllDDCs(this.AccountID, y); DataList1.DataBind(); I am getting the following error: An invalid data source is being used for DataList1. A valid data source must implement either IListSource or IEnumerable Can you please help me with this issue?

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  • Binding to static property

    - by Anthony Brien
    I'm having a hard time binding a simple static string property to a text box. Here's the class with the static property: public class VersionManager { private static string filterString; public static string FilterString { get { return filterString; } set { filterString = value; } } } In my xaml, I just want to bind this static property to a text box: <TextBox> <TextBox.Text> <Binding Source="{x:Static local:VersionManager.FilterString}"/> </TextBox.Text> </TextBox> Everything compiles, but at run time, I get the following exception: Cannot convert the value in attribute 'Source' to object of type 'System.Windows.Markup.StaticExtension'. Error at object 'System.Windows.Data.Binding' in markup file 'BurnDisk;component/selectversionpagefunction.xaml' Line 57 Position 29. Any idea what I'm doing wrong?

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  • C# Changing class method at run-time

    - by Flavio
    Hi, I need to extend the behavior of an instance, but I don't have access to the original source code of that instance. For example: /* I don't have the source code for this class, only the runtime instance */ Class AB { public void execute(); } in my code I would to intercept every call to execute, compute some sutff and then call the original execute, something like /* This is how I would like to modify the method invokation */ SomeType m_OrgExecute; { AB a = new AB(); m_OrgExecute = GetByReflection( a.execute ); a.execute = MyExecute; } void MyExecute() { System.Console.Writeln( "In MyExecute" ); m_OrgExecute(); } Is that possible? Does anyone have a solution for this problem?

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  • IOS where to put the configuration of facebook sdk

    - by Carol Smith
    I am trying to integrated my IOS 7 application with Facebook SDK I following this official tutorial https://developers.facebook.com/docs/ios/getting-started which states Configure the .plist Follow these three steps: Create a key called FacebookAppID with a string value, and add the app ID there. Create a key called FacebookDisplayName with a string value, and add the Display Name you configured in the App Dashboard. Create an array key called URL types with a single array sub-item called URL Schemes. Give this a single item with your app ID prefixed with fb. This is used to ensure the application will receive the callback URL of the web-based OAuth flow. The finished .plist should look something like this: My question is where to put these values? They already put this image, maybe it helps you to answer me Edit The problem that I don't have any plist file in my framework in xcode and I can't add a new one because if i did, I would have to add all the variables that you see in the image but the tutorial just stated about some of them

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  • WPF Custom Control with Image problem

    - by user311883
    Hi all, I am quite new to WPF/XAML and I am currently facing a problem. I have a solution with two projects in it, the first project is a Custom Control Library with a custom Window form control inside. The second project is a WPF application using my custom window form. All work fine except for the form Icon. In the WPF application project I set my window icon property to "/ProjectTwoNameSpace;component/Resources/Images/Film.ico", and in the WPF custom control I try to show that image that way : <Image Grid.Column="0" Margin="3" Width="27" Height="27"> <Image.Source> <BitmapImage UriSource="{Binding Path=Icon}" /> </Image.Source> </Image> But it doesn't work, I get a error at runtime saying that the property UriSource or StreamSource must be set for my tag. Anyone can help me ? I think it's jsut a WPF newbie problem ^^

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  • Is there a way to split a widescreen monitor in to two or more virtual monitors?

    - by Mike Thompson
    Like most developers I have grown to love dual monitors. I won't go into all the reasons for their goodness; just take it as a given. However, they are not perfect. You can never seem to line them up "just right". You always end up with the monitors at slight funny angles. And of course the bezel always gets in the way. And this is with identical monitors. The problem is much worse with different monitors -- VMWare's multi monitor feature won't even work with monitors of differnt resolutions. When you use multiple monnitors, one of them becomes your primary monitor of focus. Your focus may flip from one monitor to the other, but at any point in time you are usually focusing on only one monitor. There are exceptions to this (WinDiff, Excel), but this is generally the case. I suggest that having a single large monitor with all the benefits of multiple smaller monitors would be a better solution. Wide screen monitors are fantastic, but it is hard to use all the space efficiently. If you are writing code you are generally working on the left-hand side of the window. If you maximize an editor on a wide-screen monitor the right-hand side of the window will be a sea of white. Programs like WinSplit Revolution will help to organise your windows, but this is really just addressing the symptom, not the problem. Even with WinSplit Revolution, when you maximise a window it will take up the whole screen. You can't lock a window into a specific section of the screen. This is where virtual monitors comes in. What would be really nice is a video driver that sits on top of the existing driver, but allows a single monitor to be virtualised into multiple monitors. Control Panel would see your single physical monitor as two or more virtual monitors. The software could even support a virtual bezel to emphasise what is happening, or you could opt for seamless mode. Programs like WinSplit Revolution and UltraMon would still work. This virtual video driver would allow you to slice & dice your physical monitor into as many virtual monitors as you want. Does anybody know if such software exists? If not, are there any budding Windows display driver guru's out there willing to take up the challenge? I am not after the myriad of virtual desktop/window manager programs that are available. I get frustrated with these programs. They seem good at first but they usually have some strange behaviour and don't work well with other programs (such as WinSplit Revolution). I want the real thing!

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  • Avoiding a NullReferenceException

    - by Nikhil K
    I have used this code for extracting urls from web page.But in the line of 'foreach' it is showing Object reference not set to an instance of an object exception. What is the problem? how can i correct that? WebClient client = new WebClient(); string url = "http://www.google.co.in/search?hl=en&q=java&start=10&sa=N"; string source = client.DownloadString(url); HtmlDocument doc = new HtmlDocument(); doc.LoadHtml(source); foreach (HtmlNode link in doc.DocumentNode.SelectNodes("//a[@href and @rel='nofollow']")) { Console.WriteLine(link.Attributes["href"].Value); }

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  • codemirror fails when adding </textarea> tag inside it

    - by Jorre
    I'm using codemirror http://marijn.haverbeke.nl/codemirror/ to let users create their own web templates inside a web application. Codemirror works great, except for the time that users have put a tag inside their source code. When I load that up inside code mirror, it breaks everything in the source code that follows after because it thinks my codemirror text area is closed. I'm using the following way to launch codemirror: CodeMirror.fromTextArea('code') It works great on my existing textarea "code" except when users add inside their templates (in the codemirror textarea). Any help is much appreciated!

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  • Entities groups in transactions

    - by Joel
    In the context of "Keys and Entity Groups" article by google: http://code.google.com/appengine/docs/python/datastore/transactions.html 1) "Only use entity groups when they are needed for transactions" 2) "Every entity belongs to an entity group, a set of one or more entities that can be manipulated in a single transaction." It seems like entity groups exist only for the use of transactions, i.e. making one transaction possible between all entities in a group. My question is then why are there parent-child relations between entities and not just a simple declaration of entities to be in a single group (that is defining A,B,C to be in the same group as opposed to defining relations between them "A (parent of) B, B (parent of C)"). What is the benefit from using parent-child relation model when the only purpose is for entities to be in the same group to make transaction possible? Thanks Joel

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  • Ruby character encoding problems in netabenas and command wíndow

    - by salgo60
    I use netbeans as development IDE and runs the application from cmd but have problems to display ISO 8859-1 characters like åäö correct in both cmd window and when I run the application from netbeans Question: What is best practice to set it up Right now I do @output.puts indent + "V" + 132.chr + "lkommen till Ruby Camping!" to get ä My environment chcp 65001 Active code page: 65001 ruby main.rb Source encoding: <Encoding:US-ASCII> Default external: #<Encoding:UTF-8> Default internal: nil Locale charmap: "CP65001" where I have in the code def self.printEncoding puts "Source encoding: #{__ENCODING__.inspect}" if defined? __ENCODING__ if defined? Environment::Encoding puts "Default external: #{Encoding.default_external.inspect}" puts "Default internal: #{Encoding.default_internal.inspect}" puts "Locale charmap: #{ Encoding.locale_charmap.inspect}" end puts "LANG environment variable: #{ENV['LANG'].inspect}" unless ENV['LANG'].nil? end ruby -v ruby 1.9.1p378 (2010-01-10 revision 26273) [i386-mingw32]

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  • How to apply coding methodologies and practices to non-coding work?

    - by Dan
    I can talk for hours about best-practice, source control, change management, feature tracking, development cycles and the lot, but most of what I've learnt or read seems to apply to nuts-and-bolts programming of compiled applications. You know, ASCII files that gets turned into 1s and 0s. How does one apply the same discipline and wisdom to working in environments that are point-and-click, config-centric. I'm thinking of CMSs and specifically, my current 9 to 5, SharePoint. Traditional practices of source control, dev-staging-production seem to break down since we're not working with code, and the live environment changes with user input. So to sum up a rather lengthy question, what works in a no-code environment?

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  • using Mutex causing application to hang on Win XP X64

    - by Mohsan
    hi. I used the following code to verify the single instance of application. On Win XP X86 it is working fine, but on X64 after 3 to 4 minutes System generates StackOverflowException and causes the application to hang. after removing this check application is working fine.. Please tell me what should be the reason. code is static void Main() { bool instanceCountOne = false; using (Mutex mtex = new Mutex(true, "AppName", out instanceCountOne)) { if (instanceCountOne) { #if (DEBUG) RunInDebugMode(); #else RunInReleaseMode(); #endif mtex.ReleaseMutex(); } else { MessageBox.Show( "An application instance is already running", "App Name", MessageBoxButtons.OK, MessageBoxIcon.Information); } } } it crashes when single instance of application is running.

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  • Cross-database transactions from one SP

    - by Michael Bray
    I need to update multiple databases with a few simple SQL statement. The databases are configurared in SQL using 'Linked Servers', and the SQL versions are mixed (SQL 2008, SQL 2005, and SQL 2000). I intend to write a stored procedure in one of the databases, but I would like to do so using a transaction to make sure that each database gets updated consistently. Which of the following is the most accurate: Will a single BEGIN/COMMIT TRANSACTION work to guarantee that all statements across all databases are successful? Will I need multiple BEGIN TRANSACTIONS for each individual set of commands on a database? Are transactions even supported when updating remote databases? I would need to execute a remote SP with embedded transaction support. Note that I don't care about any kind of cross-database referential integrity; I'm just trying to update multiple databases at the same time from a single stored procedure if possible. Any other suggestions are welcome as well. Thanks!

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