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  • Is there a non-blocking version of MessageBox.Show (or something like it)?

    - by Dan Tao
    Often you just want to notify the user that something has occurred, but there's really no need for any input from them. In this common scenario, I sometimes see code like this: MessageBox.Show("Something has occurred", "Something", MessageBoxButtons.OK); This code, as we all know, causes a little pop-up window to appear with only an OK button. Now here's the thing: this code blocks (the UI thread). But in the vast majority of cases, it seems to me, if you only have an OK button, there's very little need to block. (Isn't the purpose of blocking typically to receive some input from the user? And if the user's only choice is "OK," in this typical case, isn't blocking pretty pointless?) Obviously I could just write my own little form that does basically exactly what MessageBox.Show does, except that it returns nothing (no DialogResult) and doesn't block. But I was just wondering if something like this exists already that I didn't know about.

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  • Custom Lucene Sharding with Hibernate Search

    - by Timo Westkämper
    Has anyone experience with custom Lucene sharding / paritioning using Hibernate Search? The documentation of Hibernate Search says the following about Lucene Sharding : In some cases, it is necessary to split (shard) the indexing data of a given entity type into several Lucene indexes. This solution is not recommended unless there is a pressing need because by default, searches will be slower as all shards have to be opened for a single search. In other words don't do it until you have problems :) Has anyone implemented sharding in such a way for Hibernate Search that also queries can be target to one of the shards? In our case we have Lucene queries that should target only one shard per query.

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  • Throwing exception vs returning null value with switch statement

    - by Greg
    So I have function that formats a date to coerce to given enum DateType{CURRENT, START, END} what would be the best way to handling return value with cases that use switch statement public static String format(Date date, DateType datetype) { ..validation checks switch(datetype){ case CURRENT:{ return getFormattedDate(date, "yyyy-MM-dd hh:mm:ss"); } ... default:throw new ("Something strange happend"); } } OR throw excpetion at the end public static String format(Date date, DateType datetype) { ..validation checks switch(datetype){ case CURRENT:{ return getFormattedDate(date, "yyyy-MM-dd hh:mm:ss"); } ... } //It will never reach here, just to make compiler happy throw new IllegalArgumentException("Something strange happend"); } OR return null public static String format(Date date, DateType datetype) { ..validation checks switch(datetype){ case CURRENT:{ return getFormattedDate(date, "yyyy-MM-dd hh:mm:ss"); } ... } return null; } What would be the best practice here ? Also all the enum values will be handled in the case statement

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  • Display Img and Div inline - it's not rendered inline

    - by user359372
    In order to follow correct web standards, I've tried to layout image and div inline. In orde to achieve that - I've used display:inline property. But then I experienced the following issue: image renders from the center line, and div doesn't respect height parameter set to it. I've tried using line-height parameter, but that didn't give any useful results. I've also tried various combinations with setting margin/padding to some values or to auto, or replacing div with span, or wrapping img and div with additional divs. I've managed to achieve desired result by using position:absolute, but that doesn't help in cases where I want to use centered/relative positioning of the whole component... Any clues or ideas or troubleshooting hints? Please find the html example below: Test Page Some text that should be displayed in the center/middle of the div 123   Some text that should be displayed in the center/middle of the div

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  • Strange behaviour with Microsoft.WindowsCE.Forms

    - by Mohammadreza
    I have a Windows Mobile application in which I want to check the device orientation. Therefore I wrote the following property in one of my forms: internal static Microsoft.WindowsCE.Forms.ScreenOrientation DeviceOriginalOrientation { get; private set; } The strange thing is that after that whenever I open a UserControl, the designer shows this warning even if that UserControl doesn't use the property: Could not load file or assembly 'Microsoft.WindowsCE.Forms, Version=3.5.0.0, Culture=neutral, PublicKeyToken=969db8053d3322ac' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) Commenting the above property will dismiss the warning and shows the user control again. The application is built successfully and runs without any problems in both cases. Does anybody know why this happens and how can I fix it?

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  • Comparison of music data

    - by Christian P.
    Hey I am looking for theory, algorithms and similar for how to compare music. More specifically, I am looking into how to dupecheck music tracks that have different bitrates or perhaps slightly different variations (radio vs album version), but otherwise sound the same. Use cases for this include services such as Grooveshark, Youtube, etc. where they get a lot of duplicate tracks. I am also interested in text comparisons (Britney Spers vs Britney Spears, how far they deviate, etc.) although this is secondary and I already have some sources to go on in this area. I am mostly interested in codec-agnostic comparison techniques and algoritms (assuming a "raw" stream), but codec-specific resources are appreciated. I am aware of projects such as musicbrainz.org, but have not investigated it further, and would be interested if such projects could be of help in this endeavor.

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  • Never render a layout in response to xhrs

    - by Horace Loeb
    Most of the time I don't want to render a layout when the request comes from AJAX. To this end I've been writing render :layout => !request.xhr? frequently in my controller actions. How can I make this the default? I.e., I'd like to be able to write def new Post.find(params[:id]) end and have the functionality be def show Post.find(params[:id]) render :layout => !request.xhr? end (I'm fine manually specifying a layout in the rare cases in which I want to use one.)

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  • [PHP] DOMDocument load on a page returning 400 Bad Request status

    - by PeteWilliams
    Hiya, I'm trying to use the Last.fm API for an application I'm creating, but am having some problems with validation. If an API request gives an error it returns a code and message in the response XML like this: <lfm status="failed"> <error code="6">No user with that name</error> </lfm> However, the request also returns an HTTP status of 400 (or in some cases 403) which DOMDocument considers an error and so then refuses to parse the XML. Is there any way round this, so that I can retrieve the error code and message? Thanks Pete

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  • Why does null need to be casted?

    - by BlueRaja The Green Unicorn
    The following code does not compile: //int a = ... int? b = (int?) (a != 0 ? a : null); In order to compile, it needs to be changed to int? b = (a != 0 ? a : (int?) null); Since both b = null and b = a are legal, this doesn't make sense to me. Why does null need to be casted, and why can't we simply cast the whole expression (which I know is legal in other cases)?

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  • WSDL for other protocols different than SOAP?

    - by SDReyes
    From wikipedia: The Web Services Description Language (WSDL, pronounced 'wiz-d?l') is an XML-based language that provides a model for describing Web services. But in most cases, I found that WSDL is used in conjunction with SOAP. but as far as I know, if the WSDL is a language to describe web services. there should be possible to describe another kind of web services different from SOAP. is this possible? any examples? Thanks!

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  • Math for a geodesic sphere

    - by Marcelo Cantos
    I'm trying to create a very specific geodesic tessellation, but I can't find anything online about it. It is normal to subdivide the triangles of an icosahedron into triangle patches and project them onto the sphere. However, I noticed an animated GIF on the Wikipedia entry for Geodesic Domes that appears not to follow this scheme. Geodesic spheres generally comprise a mixture of mostly hexagonal triangle patches, with pentagonal patches forming at the vertices of the original icosahedron; in most cases, these pentagons are linked together; that is, following a straight edge from the center of one pentagon leads to the center of another pentagon. In the Wikipedia animation, however, the edge from the center of one pentagon doesn't appear to intersect the center of an adjacent pentagons; instead it intersects the side of the other pentagon. Hopefully the drawing below makes this clear: Where can I go to learn about the math behind this particular geometry? Ideally, I'd like to know of an algorithm for generating such tessellations.

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  • gcov and switch statements

    - by Matt
    I'm running gcov over some C code with a switch statement. I've written test cases to cover every possible path through that switch statement, but it still reports a branch in the switch statement as not taken and less than 100% on the "Taken at least once" stat. Here's some sample code to demonstrate: #include "stdio.h" void foo(int i) { switch(i) { case 1:printf("a\n");break; case 2:printf("b\n");break; case 3:printf("c\n");break; default: printf("other\n"); } } int main() { int i; for(i=0;i<4;++i) foo(i); return 0; } I built with "gcc temp.c -fprofile-arcs -ftest-coverage", ran "a", then did "gcov -b -c temp.c". The output indicates eight branches on the switch and one (branch 6) not taken. What are all those branches and how do I get 100% coverage?

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  • Server crash = How does a TCP/IP (and the browser-client) behave after this?

    - by jens
    Hello Experts, i would be thankfull for an explanation what happens with HTTP(TCP/IP) transmissions when the server crashes unexpectedly, how does the client Browser (Firefox / IE) handle this event. What happens in the following two standard cases: Clients-actively sends data: The TCP/IP Connection has been estableshed and the Client (Web-Browser) is Sending a POST Request with some data and in the middle of the process of sending the server crashes. What does this mean for the client? As far as I know TCP/IP does not "acknowledge" a send data-package so the client does not know that the server crashed. How will the client behave? (Firefox and Internet Explorer)? The Server is actively sending data: As above the tcp/ip connection has been established and the Server is sending a large website to the client (browser). In the middle of the sending-process the server crashes, so no futher packets are sent. How does the client browser react to this event (Firefox and Interne Expolrer) Thank you very much!! Jens

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  • How do you share your git repository with other developers?

    - by semi
    I have a central git repository that everyone pushes to for testing and integration, but it only is pushed to when features are 'ready'. While in the middle of a big task, developers frequently have many commits that stay on their harddrives. Sometimes in the middle of these projects I'd like to either see what another developer is doing, or show him how I've done something. I'd like to be able to tell another developer to just "pull my working copy" The only way I can think of is having everyone run ssh on their development machines and adding accounts or ssh keys for everyone, but this is a huge privacy and permissions nightmare, and seems like a lot of work to maintain. Should we just be pushing to that central repository in these cases? Should we be pushing after every local commit?

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  • Are the *A Win32 API calls still relevant?

    - by Thanatos
    I still see advice about using the LPTSTR/TCHAR types, etc., instead of LPWSTR/WCHAR. I believe the Unicode stuff was well introduced at Win2k, and I frankly don't write code for Windows 98 anymore. (Excepting special cases, of course.) Given that I don't care about Windows 98 (or, even less, ME) as they're decade old OS, is there any reason to use the compatibility TCHAR, etc. types? Why still advise people to use TCHAR - what benefit does it add over using WCHAR directly?

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  • Restlet - Access elements of the request URL

    - by DutrowLLC
    I'm unsure what the proper way is to access parts of the requested URL. In this case, I want to get the requested path without the query variables. This is the only way I found to do it: String path = getRequest().getResourceRef().getHostIdentifier() + getRequest().getResourceRef().getPath(); The result would be the bold part of this url: http://stackoverflow.com/questions/ask?query=value I also found about 6 different ways to get the server name (http://stackoverflow.com) but I'm worried that some of them would fail in certain cases that I am unaware of (why would there be 6 different ways to do one thing): getRequest().getHostRef().getHostIdentifier(); getRequest().getHostRef().getIdentifier(); getRequest().getRootRef().getHostIdentifier(); getRequest().getRootRef().getIdentifier(); getRequest().getResourceRef().getHostIdentifier(); And this seems to get the complete URL with query parameters: getRequest().getResourceRef().getIdentifier(); Any further explanation would be much appreciated.

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  • how relate one table to another for future records

    - by Sinan
    I have a games table which holds the data about a game. Then another table which holds the data about news. So far so good. First I thought about creating a junction table for game_news so I could relate news to games. This way works as intended when the game exists. So whenever I insert a news I can relate it to a game using the junction table. However there are cases when there is news about game but the game isn't published and it doesn't exists. So my question would be; is there a way to relate these news to a particular game when the game record is created. What is the best way to do this? Any ideas?

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  • Forms authentication for users and Windows for Database?

    - by scyonx
    On our production servers, the admins created a WebUser active directory account which is users for anonymous access to IIS and is also used to authenticate database access with our SQL Server instances using Integrated Security=SSPI in the connection string and identity impersonate="true" in the web.config. I've often come across situations where I would like to or even need to use forms authentication. However, I using forms authentication, Integrated Security seems to use the logged in user's credentials to authenticate against the database. In these cases I have changed the connection string to use the credentials of a SQL Server users instead. I would prefer to not have a hard coded username and password in the connection string or rather worse in code. Is it possible to use forms authentication just for user authentication for users and windows authentication with the IIS user for database access? What would be the best practice in such a situation?

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  • Direct TCP/IP connections in P2P apps

    - by Greg Roberts
    From a Joel's post on Copilot: Direct Connect! We’ve always done everything we can to make sure that Fog Creek Copilot can connect in any networking situation, no matter what firewalls or NATs are in place. To make this happen, both parties make outbound connections to our server, which relays traffic on their behalf. Well, in many cases, this isn’t necessary. So version 2.0 does something rather clever: it sets up the initial connection through our servers, so you get connected right away with 100% reliability. But then once you’re all connected, it quietly, in the background, looks for a way to make a direct connection. If it can’t, no big deal: you just keep relaying through our server. If you can make a direct peer-to-peer connection, it silently shifts your data onto the direct connection. You won’t notice anything except, probably, much faster communication. How do they change the server connection to a P2P connection?

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  • How to correctly pop a modeless dialog from console using MFC

    - by Vertilka
    I need to create a console application that has a main() function and pop a modeless dialog, so the console can still work in parallel to the modeless dialog (do other work, like communicating with the modeless dialog). Whatever i tried, i could only pop a modal dialog. (where the console is in hold till the modal dialog close itself). When switching to modeless dialog using Create() and ShowWindow() the dialog is displayed without its controls and it freeze / block (you can see the hourglass cursor). 1) i tried to pop the modeless dialog from the main() function 2) i tried to pop the modeless dialog from the InitInstance() of a CWinApp derived class In all cases the modeless dialog freeze / block. I believe this is a one line solution. TNX,Vertilka

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  • How do I take advantage of Android's "Clear Cache" button

    - by Jay Askren
    In Android's settings, in the "Manage Applications" activity when clicking on an app, the data is broken down into Application, Data, and cache. There is also a button to clear the cache. My app caches audio files and I would like the user to be able to clear the cache using this button. How do I store them so they get lumped in with the cache and the user can clear them? I've tried storing files using both of the following techniques: newFile = File.createTempFile("mcb", ".mp3", context.getCacheDir()); newFile = new File(context.getCacheDir(), "mcb.mp3"); newFile.createNewFile(); In both cases, these files are listed as Data and not Cache.

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  • Open an attachment for editing and save changes made to it

    - by Seitaridis
    My Lotus Notes document has a rich text item that stores an attachment. I want to edit the attachment and after this to save the attachment back to the Lotus Notes document. This is the script that launches the attachment: @Command([EditGotoField];"Attachment"); @Command([EditSelectAll]); @Command([AttachmentLaunch]); @Command([EditDeselectAll]) This script opens the attachment, but the changes made are not reflected to the Lotus Document. One way of solving this is to add AttachmentActionDefault=2 as an entry to the notes.ini. This enables to edit the attachment when double clicking on attachment. Also using the right click on the attachment, and then choosing edit action, produces the same result. In both cases, after saving, the changes are reflected back to the Lotus Notes document. The problem is that I want to use a button for opening the attachment.

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  • Flash causing jerky javascript animations

    - by Matt Brailsford
    Hi Guys, I'm developing a site which has a flash background playing a small video loop scaled to fill the whole background. Over the top I have a number of HTML elements which are animated using javascript. The problem I am having is that (predominantly in FF, but also in others to a lesser degree) the flash seems to be causing my javascript animations to run rather jerky, and in some cases missing the animation altogether and just jumping to the end state. Does anybody have any thoughts on how to make the 2 work together nicely? Many thanks Matt

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  • xml validity with xsd with xsi:nillable element

    - by Laxmikanth Samudrala
    My XML file <tns:SampleInfoResponse xsi:schemaLocation="sampleNS test.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tns="sampleNS"> String String String String String String String String String String String String MY XSD file <xsd:schema targetNamespace="sampleNS" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:tns="sampleNS" xmlns="http://www.w3.org/2001/XMLSchema"> parser is complaining on <tns:LSampleEnrlDetails/>, the XML file should be <tns:LSampleEnrlDetails xsi:nil="true"/> only for valid file ? By taking out the whole tag also the parser is complaining. I would like to know what possible cases for this tag makes the XML file valid according the above schema when i don't have the data to populate for tag

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  • Any good books out there for advanced concepts like lambdas, delegates, events etc?

    - by they_soft
    I've read about these features but I don't think I've seen enough to consistently apply them in my coding, eg "This would be better done with a delegate than with my other, outdated approach". I know what they do, but I want more examples of use cases, or want some heuristic to help me think in terms of such features. All the books I've seen either focus only on the basics or just mention the features as part of the language. Is there any book out there that deals with this? Preferably C# or language agnostic.

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