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  • Low latency programming

    - by Sambatyon
    I've been reading a lot about low latency financial systems (especially since the famous case of corporate espionage) and the idea of low latency systems has been in my mind ever since. There are a million applications that can use what these guys are doing, so I would like to learn more about the topic. The thing is I cannot find anything valuable about the topic. Can anybody recommend books, sites, examples on low latency systems?

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  • GCC 4.2 Build error

    - by Mr. Man
    Hi, i am building a C project with Xcode and when ever i build it it gives me this error: ld: duplicate symbol _detectLinux in /Users/markszymanski/Desktop/Programming/C/iTermOS/build/iTermOS.build/Debug/iTermOS.build/Objects-normal/i386/linuxDetect.o and /Users/markszymanski/Desktop/Programming/C/iTermOS/build/iTermOS.build/Debug/iTermOS.build/Objects-normal/i386/iTermOS.o Thanks!

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  • ELMAH not logging in ASP.NET MVC 2

    - by PsychoCoder
    I cannot figure out what I'm doing wrong here, trying to use ELMAH in my MVC 2 application and it doesnt log anything, ever. Here's what I have in my web.config (relevant parts) <sectionGroup name="elmah"> <section name="security" requirePermission="false" type="Elmah.SecuritySectionHandler, Elmah" /> <section name="errorLog" requirePermission="false" type="Elmah.ErrorLogSectionHandler, Elmah" /> <section name="errorMail" requirePermission="false" type="Elmah.ErrorMailSectionHandler, Elmah" /> <section name="errorFilter" requirePermission="false" type="Elmah.ErrorFilterSectionHandler, Elmah" /> </sectionGroup> <elmah> <security allowRemoteAccess="0" /> <errorLog type="Elmah.SqlErrorLog, Elmah" connectionStringName="ELMAH.SqlServer" /> <!-- <errorMail from="[email protected]" to="[email protected]" cc="" subject="Elmah Error" async="true" smtpPort="25" smtpServer="[EmailServerName]" userName="" password="" /> <errorLog type="Elmah.XmlFileErrorLog, Elmah" logPath="~/App_Data" /> --> </elmah> <connectionStrings> ... <add name="ELMAH.SqlServer" connectionString="data source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\ELMAH_Logging.mdf;Integrated Security=SSPI;Connect Timeout=30;User Instance=True;" providerName="System.Data.SqlClient"/> </connectionStrings> <system.Web> <httpHandlers> <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" /> ... </httpHandlers> <httpModules> <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" /> <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" /> <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" /> ... </httpModules> </system.Web> <system.webServer> <validation validateIntegratedModeConfiguration="false" /> <modules runAllManagedModulesForAllRequests="true"> <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" /> <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" /> <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" /> </modules> <handlers> <add name="Elmah" verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah"/> ... </handlers> </system.webServer> Then using the code from DotNetDarren.com but no matter what I do no exceptions are ever logged?

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  • Visual Studio 2010 color theme

    - by James Jones
    Has anyone found/made any decent color themes for Visual Studio 2010? My VS 2005/2008 themes seem to be getting mangled in the upgrade process. I'm accustomed to using the ever famous Oren Ellenbogen's Dark Scheme featured on Scott Hanselman's blog, but the upgrade process has made it downright butt-ugly. Does anyone have any gems they'd like to share?

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  • glow when touch the button in the view in iphone

    - by Pugal Devan
    Hi, I am new to iphone development. I have seen the facebook application.In Facebook -- Camera(Click)-- Photo Albums--Thumbnails-- Write a caption View. Here click event is highlighted. In this view where ever i touch, the touch is highlighted. How it can be achieve. Can i try like this. Is there any sample codes available?. Please help me out, Thanks.

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  • Openwave v7 on Sony Ericsson S312 redirect problem

    - by ucin
    I had a web mobile application that require user to redirect from one page to another. But on openwave 7, the phone always asking for user permission. This not happen on openwave v6. I already install certificate on access using https, but it not solve the problem. Had anyone ever had similar problem?

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  • use of NSFilemanager

    - by mindfreak
    Hello, I am working as an Iphone developer since 5 months but never ever i have used NSfilemanager class. Apple has documentation but still i am not cleared about its use. My question is that can anybody tell me(with example) how and when to use the NSfilemanager class ? Any help will be appreciated. Thanks.

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  • "git pull" broken

    - by Ovid
    I recently upgraded my MacBook Pro to Snow Leopard and "git pull" returns: rakudo $ git pull git: 'pull' is not a git-command. See 'git --help' Did you mean this? shell rakudo $ git-pull -bash: git-pull: command not found I've tried reinstalling via macports, but to no avail. Then I saw this rakudo $ git --exec-path /Users/ovid/libexec/git-core That surprised me as that directory does not exist, nor has it ever existed. Google is not helping here. Hopefully you can :)

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  • ABCpdf attach Doc to email

    - by Barryman9000
    I've used ABDpdf to render a pdf and stream it to the browser, but I'm wondering if I can attach the rendered pdf to an email. Has anyone ever done that? I'm hoping there is a way that doesn't require me to save the pdf to a temp directory then attach the file, then delete it.

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  • To know is the object already retrieved in inject

    - by zerkms
    Is it possible to know that particular dependency already has been satisfied by ninject kernel? To be clear: Let's suppose we have this module: Bind<IA>().To<A>(); Bind<IB>().To<B>(); And some "client"-code: var a = kernel.Get<IA>(); // how to get here "true" for assumption: "IA was requested (once)" // and "false" for: "IB was not requested ever"

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  • Fixing VBSCRIPT inaccurate mathematical results due to rounding

    - by jay
    Try running this in a .VBS file MsgBox(545.14-544.94) You get a neat little answer of 0.199999999999932! This rounding issue also occurs unfortunately in Sin(2 * pi) since VB can only ever see the (user defined) variable pi as accurate as 3.14159265358979. Is rounding it manually (and loosing accuracy) the only way to improve the result? What is the most effective way of dealing with this kind of problem?

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  • PHP open source script for a specific website

    - by Nicolas
    Hi, Does anyone of you ever heard about a PHP open source solution that would have these features: Users login/registration (ideally connect via Facebook) Upload photos Rich backend administration with different roles and views on the users and their uploaded photos Cheers, Nicolas.

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  • VSLauncher starts wrong version

    - by Matthew Scouten
    I have 3 versions of Visual Studio installed, and 3 projects that require a specific version. VSLauncher USED to look at the SLN or VCPROJ file and open the correct version of Visual Studio. Now it only starts the most recent version, regardless of the project. Note that this has nothing to do with the commonly reported problem with beta versions of VS. none of the SLNs have ever been touched by a beta VS.

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  • Invoking cl.exe (MSVC compiler) in Cygwin shell

    - by barcarole
    I'm heavily using Cygwin (with Putty shell). But, it's quite tricky to invoke cl.exe (i.e., Visual C++ compiler toolchain) in the Cygwin bash shell. Running vcvars*.bat in the bash shell doesn't work obviously. I tried to migrate VC++'s environment variables to Cygwin, but it's not that easy. Is there anyone who ever tried to run VC++ compiler in Cygwin bash shell? Thanks, JJ

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  • maple 13 tridiagonal matrix help

    - by user292569
    i am trying to make a 100 x 100 tridiagonal matrix with 2's going down the diagonal and -1's surrounding the 2's. i can make a tridiagonal matrix with only 1's in the three diagonals and preform matrix addition to get what i want, but i want to know if there is a way to customize the three diagonals to what ever you want. maplehelp doesn't list anything useful.

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  • Hacking your own application

    - by instigator
    I am a web developer that is very conscious of security and try and make my web applications as secure as possible. How ever I have started writing my own windows applications in C# and when it comes testing the security of my C# application, I am really only a novice. Just wondering if anyone has any good tutorials/readme's on how to hack your own windows application and writing secure code.

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  • JQuery overriding the themeroller style

    - by Paul Connolly
    Hi, In my accordian control I want to override the header style to show a red background instead of the default theme colour if ever the user control (e.g user's name and address input) in that particular pane returns a validation boolean of false. I'm ok with how to use .Toggle to change the class but can't figure out how to grab the themeroller class in the first place. How would I do this? Thanks Paul

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  • MySQL & PHP Parameter 1 as Resource

    - by Nik
    Alright, PHP is throwing this error at me (in the log) when I run the code mentioned below: Error mysql_num_rows() expects parameter 1 to be resource, string given in (place) on line 10 Line 9-11 $queryFP = ("SELECT * FROM db"); $countFP = mysql_num_rows($queryFP); $aID = rand(1, $countFP); I think it has something to do with the $queryFP's syntax, but I'm not completely sure how to fix it since $queryFP's syntax is the simplest query I've ever seen.

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  • question about Doug Lea's malloc

    - by hatorade
    http://gee.cs.oswego.edu/dl/html/malloc.html in making his array for the segmented bins, he makes bins for 8 - 512 using multiples of 8 (so 63 bins, but only the last 62 are ever used). how does he determine the size for the remaining 63 bins? He mentions they are logarithmically spaced, but is there some sort of equation he used to do that optimally?

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