Search Results

Search found 18475 results on 739 pages for 'non exist'.

Page 426/739 | < Previous Page | 422 423 424 425 426 427 428 429 430 431 432 433  | Next Page >

  • python: using __import__ to import a module which in turn generates an ImportError

    - by bbb
    Hi there, I have a funny problem I'd like to ask you guys ('n gals) about. I'm importing some module A that is importing some non-existent module B. Of course this will result in an ImportError. This is what A.py looks like import B Now let's import A >>> import A Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/tmp/importtest/A.py", line 1, in <module> import B ImportError: No module named B Alright, on to the problem. How can I know if this ImportError results from importing A or from some corrupt import inside A without looking at the error's string representation. The difference is that either A is not there or does have incorrect import statements. Hope you can help me out... Cheers bb

    Read the article

  • How could the year 2010 be mistaken as a leap year? [closed]

    - by Templar
    According to news reports such as this one, older Playstation 3 game consoles incorrectly considered the year 2010 to be a leap year. The problem persisted through most of the Monday, March 1, which older PlayStations thought was Feb. 29, 2010, a date that doesn't exist. The standard leap year formula states that a leap year is any year that is divisible by 4, but not by 100, except if divisible by 400. The year 2010 doesn't fit any of those criteria. Any idea what programming error would have caused this?

    Read the article

  • F# working with DataReader

    - by mamu
    let getBytesData x = let len = reader.GetBytes(1, int64 0, null, 0, 0); // Create a buffer to hold the bytes, and then // read the bytes from the DataTableReader. let buffer : byte array = [||] reader.GetBytes(1, int64 0, buffer, 0, int32 len) |> ignore buffer let retVal = List [ while reader.Read() do yield (reader.GetString(0), getBytesData reader, reader.GetDateTime(2)) ] I have above code to read bytes[] from datareader. getBytesData function takes reader and returns bytes[] from reader. everything works fine but it getBytesData function is working very non-functional way. Is there any way i can optimize in F#? Sorry for kind of question, but i have started a new project on F# to squeeze all juice out of it, so trying to get each line most optimal way

    Read the article

  • MVC2: "File not found" after view is painted

    - by Dave Hanna
    This is wierd. First, I'm building a site based on someone else's framework (Piers Lawson: Creating a RESTful Web Service using MVC ), so I'm not entirely sure what's going on under the covers. But when I run it in VS 2010 by pressing F5, it brings up the Home page, and THEN traps an error in Application_Error. The error is "File does not exist" exception. But I have no idea what file it's looking for. Where does flow control go after the View is finished displaying? How can I break to find out what it's looking for?

    Read the article

  • Is it Possible to Query Multiple Databases with WCF Data Services?

    - by Mas
    I have data being inserted into multiple databases with the same schema. The multiple databases exist for performance reasons. I need to create a WCF service that a client can use to query the databases. However from the client's point of view, there is only 1 database. By this I mean when a client performs a query, it should query all databases and return the combined results. I also need to provide the flexibility for the client to define its own queries. Therefore I am looking into WCF Data Services, which provides the very nice functionality for client specified queries. So far, it seems that a DataService can only make a query to a single database. I found no override that would allow me to dispatch queries to multiple databases. Does anyone know if it is possible for a WCF Data Service to query against multiple databases with the same schema?

    Read the article

  • Uses of Erlang in Telecom

    - by user94154
    I'm a web developer and a college student majoring in telecommunications. This means I'm decent at programming and I know a little about telecom networks (at a high, non-technical level). I keep reading that Erlang is used all over the telecom industry (supposedly for its performance). I'm wondering if there's anyway I can combine my programming skills with my telecommunications major with Erlang. Is most of the Erlang/telecom stuff closed source? Are there any open source telecom projects written Erlang? UPDATE: sipwiz's comment makes me think in terms of a question larger than "uses of Erlang". How can I leverage a high-level understanding of telecom networks and the telecom regulatory environment with programming. I hope this hasn't veered too off-topic for SO.

    Read the article

  • How does opendir work in Perl 6?

    - by sid_com
    Hello! Can someone tell me, why the "opendir" doesn't work? #!/usr/bin/env perl6 use v6; my $file = 'Dokumente/test_file'; if ( my $fh = open $file, :r ) { for $fh.lines -> $line { say $line; } } else { say "Could not open '$file'"; } my $dir = 'Dokumente'; my $dh = opendir $dir err die "Could not open $dir: $!"; Output: Hello, World! Line 2. Last line. Could not find non-existent sub &opendir current instr.: '_block14' pc 29 (EVAL_1:0) called from Sub '!UNIT_START' pc 1163 (src/glue/run.pir:20) called from Sub 'perl6;PCT;HLLCompiler;eval' pc -1 ((unknown file):-1) called from Sub 'perl6;PCT;HLLCompiler;evalfiles' pc 1303 (compilers/pct/src/PCT/HLLCompiler.pir:707) called from Sub 'perl6;PCT;HLLCompiler;command_line' pc 1489 (compilers/pct/src/PCT/HLLCompiler.pir:794) called from Sub 'perl6;Perl6;Compiler;main' pc -1 ((unknown file):-1)

    Read the article

  • How do I make a textbox that only accepts numbers?

    - by Mykroft
    I have a windows forms app with a textbox control that I want to only accept integer values. In the past I've done this kind of validation by overloading the KeyPress event and just removing characters which didn't fit the specification. I've looked at the MaskedTextBox control but I'd like a more general solution that could work with perhaps a regular expression, or depend on the values of other controls. Ideally this would behave such that pressing a non numeric character would either produce no result or immediately provide the user with feedback about the invalid character.

    Read the article

  • How to capture any key in X?

    - by cz-david
    Hi, I am building an application for which I need to periodically get information about users keyboard. It is going to be user idle detection application. I have a fairly simple solution to periodically check if the mouse has been moved. But I can't figure any reasonable non root way to detect if the keyboard has been pressed. I was thinking about registering a hook every timer timeout and on any key press to unregister it. So if there is no key press for a long time then my program will know if the user is idle. Anyway, I couldn't find any global hooks for any key, including modifiers. Is there an easy way to do this? Or would someone have a better way to detect keyboard idleness? Thanks, David Polák

    Read the article

  • When is assembler faster than C?

    - by Adam Bellaire
    One of the stated reasons for knowing assembler is that, on occasion, it can be employed to write code that will be more performant than writing that code in a higher-level language, C in particular. However, I've also heard it stated many times that although that's not entirely false, the cases where assembler can actually be used to generate more performant code are both extremely rare and require expert knowledge of and experience with assembler. This question doesn't even get into the fact that assembler instructions will be machine-specific and non-portable, or any of the other aspects of assembler. There are plenty of good reasons for knowing assembler besides this one, of course, but this is meant to be a specific question soliciting examples and data, not an extended discourse on assembler versus higher-level languages. Can anyone provide some specific examples of cases where assembler will be faster than well-written C code using a modern compiler, and can you support that claim with profiling evidence? I am pretty confident these cases exist, but I really want to know exactly how esoteric these cases are, since it seems to be a point of some contention.

    Read the article

  • How to detect if a page is an RSS or ATOM feed

    - by Pepper
    Hello, I'm currently building a new online Feed Reader in PHP. One of the features i'm working on is feed auto-discovery. If a user enters a website URL, the script will detect that its not a feed and look for the real feed URL by parsing the HTML for the proper tag. The problem is, the way im currently detecting if the URL is a feed or a website only works part of the time, and I know it can't be the best solution. Right now im taking the CURL response and running it through simplexml_load_string, if it can't parse it I treat it as a website. Here is the code. $xml = @simplexml_load_string( $site_found['content'] ); if( !$xml ) // this is a website, not a feed { // handle website } else { // parse feed } Obviously, this isn't ideal. Also, when it runs into an HTML website that it can parse, it thinks its a feed. Any suggestions on a good way of detecting the difference between a feed or non-feed in PHP? Thanks, Pepper http://feedingo.com

    Read the article

  • VS2010 Intellisense on class files

    - by rlb.usa
    I have a Web Application Project that I'm working on. My solution looks like this : ./MyProject/ ./MyProject/dataobjects.cs <- no intellisense ./MyProject/sqlquerying.cs <- no intellisense ./MyProject/default.aspx <- intellisense works here ./MyProject/default.aspx.cs <- intellisense works here ./MyProject/mypage.aspx <- intellisense works here ./MyProject/mypage.aspx.cs <- intellisense works here Visual Studio 2010 doesn't give me any intellisense options when I work on non-code-behind files like Business Logic Layers and Data Logic Layers . In VS2008, I placed these files in the App_Code folder and intellisense worked fine. What can I do? Is there a specific folder I need to put these files in to get intellisense?

    Read the article

  • Installing a new SQL Server instance fails

    - by Rubio
    I've previously in my setup installed SQL Server Express 2005. Now I've switched to SQL Server Express 2008. I updated the command line parameters to those documented for the latter. If the comp already has SQL Server Express 2008 installed, my installer should create a new instance. The command line parameters are as follows: /ACTION=Install /FEATURES=SQLEngine /QS /INSTANCENAME=ABCD /SECURITYMODE=SQL /SAPWD=CunningPassword The requested instance name does not exist on the target machine. This will end in an error -2068643838. The logs show the following error: "No features were installed during the setup execution. The requested features may already be installed." If I remove the /QS parameter and try to install interactively, I'll get as far as the Feature Selection page. The UI shows three options, Instance Features, Shared Features and Redistributable Features. Whatever I select, clicking Next results in the same error (There are validation errors on this page). Any ideas anyone? Thanks, -- Rubio

    Read the article

  • Help needed with InvokeRequired for Web.UI

    - by Ali
    I have a multi-threaded application in C# which tries to write to a TextBox in a Windows.Forms created by another thread. As threads cannot modify what has not been created by them, I was using InvokeRequired as shown on the code below, to solve this problem. public delegate void MessageDelegate(Communication message); void agent_MessageReceived(Communication message) { if (InvokeRequired) { BeginInvoke(new MessageDelegate(agent_MessageReceived), new object[] { message }); } else { TextBox1.Text += message.Body; } } Now I need to do the same for a TextBox in an ASP.NET app, but apparently neither InvokeRequired nor BeginInvoke exist for TextBox in a Web.UI. What can I do?

    Read the article

  • Problem with javascript in firefox when moving google ads

    - by thomas woelfer
    hi. i have a website with google ads on it. i would like to make it load faster. thus i moved all the google scripts to the bottom of the page. i also have a placeholder at the location where the ad(s) should be displayed and other divs that (initially) get the ads. finally (in window.onload) i'm moving the ads that have just be fetched from google to their target locations. (a simple example page is here: http://www.nickles.de/temp/ads.html ) this works in ie, but it doesn't work in ff. (that is, in firefox, non-text ads show up fine, while text-ads don't. [or at least, not in a reliable way.]) any ideas what would be causing this? Thanks! -thomas woelfer

    Read the article

  • IA-32: Pushing a byte onto a stack isn't possible on Pentium, why?

    - by Tim Green
    Hi, I've come to learn that you cannot push a byte directly onto the Intel Pentium's stack, can anyone explain this to me please? The reason that I've been given is because the esp register is word-addressable (or, that is the assumption in our model) and it must be an "even address". I would have assumed decrementing the value of some 32-bit binary number wouldn't mess with the alignment of the register, but apparently I don't understand enough. I have tried some NASM tests and come up that if I declare a variable (bite db 123) and push it on to the stack, esp is decremented by 4 (indicating that it pushed 32-bits?). But, "push byte bite" (sorry for my choice of variable names) will result in a kind error: test.asm:10: error: Unsupported non-32-bit ELF relocation Any words of wisdom would be greatly appreciated during this troubled time. I am first year undergraduate so sorry for my naivety in any of this. Tim

    Read the article

  • FileNotFound exception when trying to write to a file

    - by Chris Knight
    OK, I'm feeling like this should be easy but am obviously missing something fundamental to file writing in Java. I have this: File someFile = new File("someDirA/someDirB/someDirC/filename.txt"); and I just want to write to the file. However, while someDirA exists, someDirB (and therefore someDirC and filename.txt) do not exist. Doing this: BufferedWriter writer = new BufferedWriter(new FileWriter(someFile)); throws a FileNotFoundException. Well, er, no kidding. I'm trying to create it after all. Do I need to break up the file path into components, create the directories and then create the file before instantiating the FileWriter object?

    Read the article

  • SQL Server: Can INFORMATION_SCHEMA Tell Me When a SQL Object Was Created?

    - by Jim G.
    Given: I added a non-nullable foreign key to a table. I settled on a way to populate the foreign key with default values. I checked in both changes to a re-runnable DB creation script. Other developers ran this script, and now they have the foreign key populated with default values on their developer machines. A few days later however... I changed my mind. Now I'd like to populate the foreign key's default values differently. My Question: Can SQL Server or INFORMATION_SCHEMA tell me when SQL objects were created? Ideally, I'd like to drop and re-add the foreign key if it was created before a certain date/time. Any help or alternative strategies would be greatly appreciated. Obviously, I'd like to avoid going to each developer's cube, asking them to drop the foreign key manually.

    Read the article

  • XIB-instantiated Object's IBOutlet is nil

    - by jxpx777
    I have a XIB set up like in this screenshot: File's owner is my main window controller. The XIB is also in charge of creating an object that serves as the delegate for the MGScopeBar view. As you can see in the screenshot, the scope bar delegate has an IBOutlet for the search field so that it can return it as an extra view as part of the delegate process. The problem I'm having is that when the delegate object is queried for the accessory view, the IBOutlet NSSearchField is nil. I'm fairly certain this has something to do with the order that objects are created, IBOutlets wired, etc, but I'm just a little lost as to where in the process I can expect the search field to exist so that the scope bar delegate can reference it properly. Thanks in advance for any pointers.

    Read the article

  • ServletContext getResource not working

    - by David
    I'm trying to use ServletContext.getResource to retrieve a java.net.url reference to an image file (which I will then include in a PDF library using iText). When I use ServletContext.getRealPath("picture.jpg"), I get back a string URL. However, getResource always returns null. Example 1: String picture = ServletContext.getRealPath("picture.jpg"); // picture contains a non-null String with the correct path URL pictureURL = ServletContext.getResource(picture); // pictureURL is always null Example 2: URL pictureURL = ServletContext.getResource("picture.jpg"); // pictureURL is always null So what is the correct way to build a java.net.URL object pointing to a file in my webapps folder? Why does getRealPath work but not getResource? In case it helps at all, here is my folder structure webapps - mySite - picture.jpg Does my picture need to be stored in either WEB-INF or WEB-INF/classes to be read by getResource?

    Read the article

  • A tool or framework extension or code snippet for logging the internal state of objects?

    - by George Mauer
    When spiking on how something works or when my unit test behave in an unpredictable manner I usually have to drop into debug mode. 99% of my time in debug mode is spent checking the values of fields on objects to verify its state. I already have log4net set up, it would seem that if I could easily add a line of code to log out the state of objects I could remove most of my need to start up the bulky debugger. The problem is of course that to expose object state implicitly you need to manually override each object's ToString() method. What I would like to be able to do is the ability to do logger.LogState(someObject) and have logged out the object state including at least a formatted list of all the private variables, references (to some arbitrary depth), and collections. Does anyone know a tool/framework/code snippet that can be used to generate a string of the internal state of any object? I could of course write one myself but its a non-trivial problem and I'd prefer something someone has put some thought into.

    Read the article

  • Nant xmlpoke and unique nodes

    - by Lou Franco
    I am trying to use an xmlpoke task to update a VS Project File (which is XML). In the Project root, there are multiple PropertyGroup nodes, I am trying to select the first one. The XML looks like this <Project> <PropertyGroup> </PropertyGroup> <PropertyGroup> </PropertyGroup> <PropertyGroup> </PropertyGroup> </Project> I am using an xpath of //Project/PropertyGroup[1] to get the first PropertyGroup, but I get the error: “Non-unique xpath given //Project/PropertyGroup[1]”.

    Read the article

  • Using ed to manipulate files matched by find

    - by TheOsp
    Following the bash-hackers wiki's recommendation, I want to edit files using ed. In particular I want to do the following with ed instead of sed: find . -type f -exec sed -i -e 's/a/b/g' {} \; I see that ed doesn't have opt like sed's -e, so as far as I know, pipes and io redirections are the only way to work with it non-interactively. So, using ed from a bash script to do the same as the above sed command would look like: ed file_name <<<$'g/a/s//b/g\nw' Or echo $'g/a/s//b/g\nw' | ed file_name But as far as I know it is impossible to involve pipes or io redirections within find's -exec. Do I miss something? or is the only way to overcome this is to use loops? for file in $(find . -type f -print); do ed $file <<<$'g/a/s//b/g\nw'; done;

    Read the article

  • .NET: will Random.Random operate differently inside a static method

    - by Craig Johnston
    I am having difficulty with the following code which is inside a static method of a non-static class. int iRand; int rand; rand = new Random((int)DateTime.Now.Ticks); iRand = rand.Next(50000); The iRand number, along with some other values, are being inserted into a new row of an Access MDB table via OLEDB. The iRand number is being inserted into a field that is part of the primary key, and the insert attempt is throwing the following exception even though the iRand number is supposed to be random: System.Data.OleDb.OleDbException: The changes you requested to the table were not successful because they would create duplicate values in the index, primary key, or relationship. Change the data in the field or fields that contain duplicate data, remove the index, or redefine the index to permit duplicate entries and try again. Could the fact the method is static be making the iRand number stay the same, for some reason?

    Read the article

  • Using malloc/free in Objective-C object

    - by Itamar Katz
    I have a class AudioManager with a member of type AudioBufferList *. (This is a struct declared in the CoreAudio framework). Since AudioBufferList is not a NSObject, I cannot retain it, so I have to alloc/free it (correct me if I'm wrong). My question is, where is the 'right' place to free it? Currently I am doing it in the dealloc method of AudioManager. If I understand correctly, this method is invoked automatically once the release message is sent to the instance of AudioManager --- is that true? Is there any other recommended practice regarding using alloc/free on non-objects members of Objective-C objects? Edit: From Apples documentation: Subclasses must implement their own versions of dealloc to allow the release of any additional memory consumed by the object—such as dynamically allocated storage for data or object instance variables owned by the deallocated object. After performing the class-specific deallocation, the subclass method should incorporate superclass versions of dealloc through a message to super: Which makes things a little bit clearer - but more insights are appreciated.

    Read the article

< Previous Page | 422 423 424 425 426 427 428 429 430 431 432 433  | Next Page >