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  • C: evaluate part of the string

    - by Halst
    I cant find an expression to evaluate a part of a string. I want to get something like that: if (string[4:8]=='abc') {...} I started writing like this: if (string[4]=='a' && string[5]=='b' && string[6]=='c') {...} but if i need to evaluate a big part of string like if (string[10:40] == another_string) {...} then it gets to write TOO much expressions. Are there any ready-to-use solutions?

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  • How does a virtual machine work?

    - by Martin
    I've been looking into how programming languages work, and some of them have a so-called virtual machines. I understand that this is some form of emulation of the programming language within another programming language, and that it works like how a compiled language would be executed, with a stack. Did I get that right? With the proviso that I did, what bamboozles me is that many non-compiled languages allow variables with "liberal" type systems. In Python for example, I can write this: x = "Hello world!" x = 2**1000 Strings and big integers are completely unrelated and occupy different amounts of space in memory, so how can this code even be represented in a stack-based environment? What exactly happens here? Is x pointed to a new place on the stack and the old string data left unreferenced? Do these languages not use a stack? If not, how do they represent variables internally?

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  • TIBRV: Remote vs Local RVD

    - by jsw
    When connected to a local RVD a sending application is shielded from network interruptions and the send message methods will only block for the time it takes for the message to reach the local RVD process. With remote RVD the sending application is no longer shielded from network interruptions and the send message methods will block for the time it takes to hop across the network to reach the remote RVD process. Is my understanding correct? The documentation is vague regarding remote daemons. I'm mostly concerned with how reliable and performant the send message will be from the perspective of a sending application. Introducing unnecessary blocking on the client side due to sending a message (especially a network hop) is a big no-no in this application. The speed at which the messages reach the consumer is not of the utmost importance. With this in mind is a remote RVD out of the question?

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  • How best to pre-install OR pre-load OR cache Java Script library to optimize performance.

    - by Kabeer
    Hello. I am working for an intranet application. Therefore I have some control on the client machines. The Java Script library I am using is somewhat big in size. I would like to pre-install OR pre-load OR cache the Java Script library on each machine (each browser as well) so that it does not travel for each request. I know that browsers do cache a Java Script library for subsequent requests but I would like the library to be cached once so all subsequent requests, sessions and users. What is the best mechanism to achieve this?

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  • How to Add Css style sheet on DevExpress Gridview?

    - by Phsika
    i have big problem about CssFilePath property in ASPXGridView . also used Theme Deployer. i created ASPXGRidView that is goog in 9.3.4 version not problem is occured but i upgrated my system to 2010.2 version (Last version) but GridView CssFilePath not working my GridView looks html table. How can i solve it : i converted my project devexpress 9.3.4 to 2010.2 but My Working gridView look like this:TEST.ASCX has got a DevExpress GridView. <Styles CssFilePath="../../App_Themes/Aqua/GridView/styles.css" CssPostfix="Aqua"></Styles> i see asp.net design mode Aqua mode every thing ok. But press f5 my Gridview look above! how can i see aqua style...

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  • Write a sql to get the last data

    - by Lu Lu
    Hello everyone, I have a Realtime table with example data: Symbol Date Value ABC 1/3/2009 03:05:01 327 -- is last data for 'ABC' ABC 1/2/2009 03:05:01 326 ABC 1/2/2009 02:05:01 323 ABC 1/2/2009 01:05:01 313 BBC 1/3/2009 03:05:01 458 -- is last data for 'BBC' BBC 1/2/2009 03:05:01 454 BBC 1/2/2009 02:05:01 453 BBC 1/2/2009 01:05:01 423 Please help me to write a sql to return last data for all symbol. The result is: Symbol Date Value ABC 1/3/2009 03:05:01 327 BBC 1/3/2009 03:05:01 458 P/s: I use sql server 2005. And Realtime data is very big, please optimize the sql code. Thanks.

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  • Java Array Comparison

    - by BlairHippo
    Working within Java, let's say I have two objects that, thanks to obj.getClass().isArray(), I know are both arrays. Let's further say that I want to compare those two arrays to each other -- possibly by using Arrays.equals. Is there a graceful way to do this without resorting to a big exhaustive if/else tree to figure out which flavor of Arrays.equals needs to be used? I'm looking for something that's less of an eyesore than this: if (obj1 instanceof byte[] && obj2 instanceof byte[]) { return Arrays.equals((byte[])obj1, (byte[])obj2); } else if (obj1 instanceof boolean[] && obj2 instanceof boolean[]) { ...

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  • My computer's dying :(

    - by j-t-s
    Hi All I have a sweet computer and have never had any real problems with it until now. I recently formatted my computer and all was well. But now my monitor randomly flickers. The monitor will just go black for about a second or two, then it'll return back to its normal state with all the stuff still on the screen. This is getting progressively worse. Another problem that has started is my computer randomly restarts. (I've managed to prevent it from restarting by removing the check in Automatically Restart from the Startup and Recovery Dialog. But I know this doesn't solve the problem). It also completely freezes up on me. One last thing, this morning I got a big blue screen. I can't remember what it said, but if it happens again I will take note of it and repost. Or if I can find some kind of a log file containing that bluescreen error I will post. I have checked all cords, and they're all fine. Nothing's loose. My computer isn't overheating either. I've taken the case off for 3 whole days and haven't used the computer for those 3 days, which has had no effect. I've checked the connections inside and nothing's loose there either. I know there's nothing wrong with my monitor because my friend has 2 computers and it works perfectly on those computers. I don't understand how my computer could suddenly become so unstable. I'm almost certain that I have no viruses; I full-scan my pc everyday for nastys, and have strict firewall settings. Anyway, I don't see how it could be a virus anyway simply due to the fact that I had these problems right after I formatted, and before I even had the chance to install or copy anything or even connect to the internet. I know it has nothing to do with the way I formatted the computer too, I've been fixing computers for years. Sorry for rambling on, just making sure I don't leave anything out. Has anybody else had this problem? Can somebody please try to help me with this? Thank you :)

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  • How to get CEdit to scroll properly?

    - by CSharperWithJava
    I have a CEdit control that's used to display a diagnostics output. Sometimes the data overflows the screen size, so naturally I set the Vertical Scroll property to true (MFC dialog editor). But then, when I tried to scroll the text that was in the window before isn't cleared and the new text is written over it. The result is a big mess of everything I have scrolled past. I've looked for a draw background property or something similar that will erase everything in the window while scrolling (before redrawing the new data). Any suggestions?

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  • php multiple select drop down

    - by Chocho
    here is my mysql and php code layout: -i have 3 tables -tableA stores unique "person" information -tableB stores unique "places" information -tableC stores not unique information about a person and places they have "beenTo". here is how i layed out my form: -one big form to insert into "person" tableA; "beenTo" tableC in the form, a person mulitple selects "places" which get inserted into "beenTo" my question is, when i am editing a "person" how do i display what the user has already selected to appear on my multiple select options drop down menu? my drop down menu at the moment query "places" table and displays it in a multiple select drop down menu. its easier when a person have beenTo one place, the problem arrises when there is more than one "beenTo" places? any ideas. thanks

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  • JSP/JSF conversion to ASP.NET

    - by sharru
    I have a pretty big JSF web application. I must convert the application to ASP.NET. I already converted the Java code to C# code manually and also using JCLA (Java Language Conversion Assistant from Microsoft). What is the best way to convert the JSF part to ASP.NET? Is there any tool that can help shorten the work? For example convert JSF <t:dataList> to ASP.NET datagrid, or converting panelGroup to asp:panel, etc...

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  • Import xml to database with high end performance and Audit log- A best Practice

    - by karthik
    Hi, I have to import big xml files to Ms SQL 2005 Database by using C# with high end Performance. Even if any record fails in middle, i have to take next record for process and failed record need to log for audit. I don't want to put insert query with in for loop. Could you please suggest a best way to do this. If I can use bulkcopy methods or Data Adapter update methods- Its very nice, But if any record fails, execution of that statement breaks and rolled back totally, right? Any alternatives and Best practices with example please..? Is Multi-threading works for me to improve performance..? Give me example please. Thanks Karthikeyan

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  • Scala Programming for Android

    - by Lemmy
    I have followed the tutorial at Scala and Android with Scala 2.7.3 final. The resulting Android App works but even the most basic application takes several minutes (!) to compile and needs 900 kb compressed, which is a show stopper for mobile applications. Additionally, the IDE runs out of memory every now and then. I assume dex is not made for big libraries like the scala-library. So my question is: Has anyone actually done this and is there any cure for this?

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  • Do you know a good and efficient FFT?

    - by yan bellavance
    Hi, I am trying to find a very fast and efficient Fourier transform (FFT). Does anyone know of any good ones. I need to run it on the iPhone so it must not be intensive. Instead, maybe you know of one that is wavelet like, i need frequency resolution but only a narrow band (vocal audio range up to 10khz max...even 10Khz might be too high). Im thinking also of truncating this FFT to keep the frequency resolution while eliminating the unwanted frequency band. This is for an iphone ...I have taken a look at the FFT in Aurio touch but it seems this is an int FFT but my app uses floats.....would it give a big performance increase to try and adapt program to an int FFT or not(which i really dont feel like doing...plus aurio touch uses a radix 2 FFT which is not that great).

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  • ASP.net MVC - Check status request

    - by vdhant
    Hi guys Just wondering if its possible to get the status of a request from another request? To help provide some context, I want to use ajax to upload some files to the server. When the upload is started I want triggered another ajax request that checks to see how much of the file has been uploaded (or in other words how big was the other request and how far through receiving the request is the server). I was thinking that I could use a guid or something similar to ensure that I am checking the status of the right request. But how do I check the status of another request??? Cheers Anthony

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  • Default value list for pipeline param in Powershell

    - by fatcat1111
    I have a Powershell script that reads values off of the pipeline: PARAM ( [Parameter(ValueFromPipeline = $true)] $s ) PROCESS { echo "* $s" } Works just fine: PS my.ps1 foo * foo I would like the script to have list of default values, as the most common usage will always use the same values and storing them in the default will be most convenient. I did the usual assignment: PARAM ( [Parameter(ValueFromPipeline = $true)] $s = 'bar' ) PROCESS { echo "* $s" } Again, works just fine: PS my.ps1 * bar PS my.ps1 foo * foo However when setting the default to be a list, I get back something entirely reasonable but not at all what I want: PARAM ( [Parameter(ValueFromPipeline = $true)] $s = @('bar', 'bat', 'boy') ) PROCESS { echo "* $s" } Result: PS my.ps1 * bar bat boy I expected: PS my.ps1 * bar * bat * boy How can I get one call in to the Process loop for each default value? (This is somewhat different than getting one call in to Process, and wrapping the current body of in a big foreach loop over $s).

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  • Native (non-jqueryui) way to set prompt() input field inline.

    - by Anthony
    I might just be using the wrong keywords on Google, but what I have in mind is: -------------------------------- | What is your mailbox? | | | | [ ]@mail.example.org | | | | [OK] [Cancel] | -------------------------------- The idea being that the input field is followed right behind by the mail server name, to help avoid instances where: If I don't make it follow right behind, the user puts in the whole thing, If I default it to "[email protected]" they delete the server name. In either case, it's not too big a deal, as I will know that if the returned value does have the server, to remove it and if doesn't, I know what server it belongs to, but I think this visual aid will be a better user experience and lower the amount of validation worries I tend to get.

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  • Free hosting service for private and public git repositories

    - by Alexander
    Hi, does anyone know a free service for hosting private and public git repositories? There are a lot of services like for example the well known github. Most of them only allow hosting of public repositories. I want to host one or more of my private programming projects using git, but not all of them should be public (at least not for now). I also found the free service GitFarm which is build using the Google App Engine technology, but i couldn't find any information how it works (don't know what "built on Google App Engine technology" means) or if there are any other limitations. Also it seams like there is no web front-end available. An integrated web front-end, bug tracker and stuff like this would also be a big plus!

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  • Make two servers talk to each other

    - by Maksim
    I have application written in GWT and hosted on Google AppEngine/Java. In this application user will have an option to upload video/audio/text file to the server. Those files could be big, up to 1gb or so and because GAE/J does not support large file I have to use another server to store those files. This would be easy to implement if there was no cross-domain security feature in browsers. So, what I'm thinking is to make GAE Server talk to my server (Glassfish or any other java servers if needed) to tell url to the file and if possible send status of uploaded file (how many percent was uploaded) so I can show status on clients screen. Here is what I'm thinking to do. When user loads GWT page that is stored on GAE/J he/she will upload file to my server, then my server will send response back to GAE and GAE will send response to the client. If this scenario is possible what would be the best way to implement GAE to Glassfish conversation?

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  • What are the biggest differences between Scala 2.8 and Scala 2.7?

    - by André Laszlo
    I've written a rather large program in Scala 2.75, and now I'm looking forward to version 2.8. But I'm curious about how this big leap in the evolution of Scala will affect me. What will be the biggest differences between these two versions of Scala? And perhaps most importantly: Will I need to rewrite anything? Do I want to rewrite anything just to take advantage of some cool new feature? What exactly are the new features of Scala 2.8 in general?

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  • Automatically render changed partials in webby

    - by Tomas Sedovic
    I have a webby page and I'm have a layout that all my pages are rendered to. That layout uses a partial for navigation (in HAML): = render(:partial => "navigation", :locals => {:some => "stuff"} ) The problem is that when I change the _navigation partial, neither webby nor webby autobuild recognize the change and they don't re-render the pages. I've solved this by setting the dirty: true flag in the layout, but that makes all the pages re-render every time -- even when nothing changed. I know that this is not that big a deal, but still: is there a way so that when you change partial, webby recognizes this and renders only the affected pages (as it does with everything else)?

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  • Best approach for building a multiplattform graphical interface for a command-line application

    - by Werner
    Hi, I developed a command line application, whose binary runs in Linux, Windows and Mac OSX. It reads some text input files, but I realize that some special users can not handle this. I would then like to build some kind of graphical interface, where the user only finds buttons and scroll bars for selecting the input parameters, a big "run" button, and then it reads the output of the program and makes some figures. I also need that everything gets finally packed in a single file, which uses only static libraries, so the user just needs to copy the file to his/her machine and run it. I would like to know what is the best open source and multi-platform approach to do this. 10 years ago I played a bit with something similar on DEC machines, so I guess that nowadays the situation has probably improved a bit. P.S. For designing the graphical interface, I am looking for a graphical approach, where you add buttons, scroll bars with the mouse P.S. 2: the interface is really simple, just need less than 10 buttons, 5 text fields and 2 scrolla bars Thanks

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  • Insert an ajaxified Webpart into an existing MOSS site

    - by mamoo
    Hi everybody, I need to code a webpart which purpose is to asynchronously fetch some documents and display them into an existing page. Unfortunately I have to face a lot of rescritcions and my struggle to find a solution seems useleess so far. 1) I cannot use Microsoft asp.net ajax 2) I must use Jsonp because the called service (page, whatever...) is outside the site's domain. That's not a big problem. 3) I have no possibility to alter the existing page code, so I cannot reference an external library such as JQuery. 4) For the same reason I have no possibility to call my methods on the window.onLoad event, so here the question is: how can I be sure that everything is correctly loaded before triggering my ajax call? 5) Since several instances of the same webpart can be placed into the same page, can there be some possible conflicts among the various js functions?

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  • Doing Forms With Just Windows SharePoint Services 3.0?

    - by tekiegreg
    For the most part my organization is happy with WSS 3.0 (no upgrading to MOSS) with one exception, there is really just one form we'd like to put up somehow. It's fairly big form (basically change requests for IT services, on paper it's easily 2 full 8.5 by 11 pages). We thought about Custom ASP.NET coding as a separate stand-alone page or maybe as a web part. What have other people out there done? MOSS and Infopath is not really an option as it really is too expensive for us at this time. Thanks in advance!

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  • wcf class implementing two operation contracts in different service contracts with same name

    - by Archie
    Hello, I have declared two service contracts as follows: [ServiceContract] public interface IContract1 { [OperationContract] double Add(int ip); } [ServiceContract] public interface IContract2 { [OperationContract] double Add(double ip); } I have a class which implements these two contracts. I have created two end points for both the contracts. But I'm not able to access the service from client code. It displays a big error when i try to update the service reference as: Metadata contains an error that cannot be resolved.... There was no endpoint listening at ... etc. I know that you can't have two OperationContracts with the same name but is it possible to have two operation contracts in different service contracts with same name but different signature? Thanks.

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