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  • How can I stop a default event when using a named function in addEvent?

    - by Rupert
    Normally, if I wish to stop a default event in mootools I can do this: $('form').addEvent('submit', function(e) { e.stop(); //Do stuff here } However, I don't like using an anonymous function in events because I often want to reuse the code. Lets say I have a validate function. I could do this: $('form').addEvent('submit', validate); which works fine until I want to stop the default event. validate obviously doesn't know what e is so I can't just do e.stop(). Also I've tried passing the event as a variable to validate but whenever I use a named function with parameters, the function gets called automatically on domready, rather than on the event firing. Even worse, an error is thrown when the event is fired: What am I doing wrong?

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  • How can I bind a custom property of a windows form to a second property?

    - by jeroko
    I want to bind a custom property of a windows form to a second property, so when I update the former the latter gets the same value. This is the simplest example of what I'm trying to do: public partial class Form2 : Form { public string MyTargetProperty { get; set; } public string OtherProperty { get; set; } public Form2() { InitializeComponent(); this.DataBindings.Add("MyTargetProperty", this, "OtherProperty"); } private void button1_Click(object sender, EventArgs e) { MyTargetProperty = "test"; Console.WriteLine("OtherProperty " + OtherProperty); } } When I click button1 I should be able to see that 'OtherProperty' has the same value as 'MyTargetProperty'. Am I doing something wrong? Do I miss something?

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  • what does this code do?

    - by bstullkid
    It looks like this just sends a ping, but whats the point of that when you can just use ping? int main (int argc, char *argv[]) { unsigned int pid = 0; char buffer[2]; char *args[] = { "/bin/ping", "-c", "5", NULL, NULL }; if (argc != 2) return 0; args[3] = strdup(argv[1]); for (;;) { gets(buffer); /* FTW */ if (buffer[0] == 0x6e) break; switch (pid = fork()) { case -1: printf("Error Forking\n"); exit(255); case 0: execvp(args[0], args); exit(1); default: break; } } return 255; }

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  • LINQ to SQL -- Can't modify return type of stored procedure.

    - by Kyle Ryan
    When I drag a particular stored procedure into the VS 2008 dbml designer, it shows up with Return Type set to "none", and it's read only so I can't change it. The designer code shows it as returning an int, and if I change that manually, it just gets undone on the next build. But with another (nearly identical) stored procedure, I can change the return type just fine (from "Auto Generated Type" to what I want.) I've run into this problem on two separate machines. Any idea what's going on? Here's the stored procedure that works: USE [studio] GO /****** Object: StoredProcedure [dbo].[GetCourseAnnouncements] Script Date: 05/29/2009 09:44:51 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER OFF GO CREATE PROCEDURE [dbo].[GetCourseAnnouncements] @course int AS SELECT * FROM Announcements WHERE Announcements.course = @course RETURN And this one doesn't: USE [studio] GO /****** Object: StoredProcedure [dbo].[GetCourseAssignments] Script Date: 05/29/2009 09:45:32 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER OFF GO CREATE PROCEDURE [dbo].[GetCourseAssignments] @course int AS SELECT * FROM Assignments WHERE Assignments.course = @course ORDER BY date_due ASC RETURN

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  • QuestionOrAnswer model?

    - by Mark
    My site has Listings. Users can ask Questions about listings, and the author of the listing can respond with an Answer. However, the Answer might need clarification, so I've made them recursive (you can "answer" an answer). So how do I set up the database? The way I have it now looks like this (in Django-style models): class QuestionOrAnswer(Model): user = ForeignKey(User, related_name='questions') listing = ForeignKey(Listing, related_name='questions') parent = models.ForeignKey('self', null=True, blank=True, related_name='children') message = TextField() But what bugs me is that listing is now an attribute of the answers as well (it doesn't need to be). What happens if the database gets mangled and an answer belongs to a different listing than its parent question? That just doesn't make any sense. We can separate it with polymorphism: QuestionOrAnswer user message created updated Question(QuestionOrAnswer) shipment Answer(QuestionOrAnswer) parent = ForeignKey(QuestionOrAnswer) And that ought to work, but now ever question and answer is split into 2 tables. Is it worth this overhead for clearly defined models?

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  • How to force programs out of swap file when a resources-intensive batch finishes?

    - by sharptooth
    We use employees' desktops for CPU-intensive simulation during the night. Desktops run Windows - usually Windows XP. Employees don't log off, they just lock the desktops, switch off their monitors and go. Every employee has a configuration file which he can edit to specify when he is most likely out of office. When that time comes a background program grabs data for simulation from the server, spawns worker processes, watches them, gets results and sends them to the server. When the time specified by the employee elapses simulation stops so that normal desktop usage is not interfered. The problem is that simuation consumes a lot of memory, so when the worker processes run they force other programs into the swap file. So when the employee comes all the programs he left are luggish and slow until he opens them one by one so that they are unswapped. Is there a way the program can force other programs out of swap file when it stops simulation so that they again run smoothly?

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  • Display arabic text left to right in pdf using apache fop 0.95

    - by sangam
    Hi all. We are generating pdf using apache's xsl fo engine, namely fop 0.95. We have been successful in displaying arabic text from xml to pdf. But there is some problem in the direction of the displayed words. If we have 'sangam' (please assume that 'sangam' is in arabic) in xml, it gets displayed as 'magnas'. Has anyone encountered this before? What could be the solution? For example, I have one node in xml file like this: <empltmoblab>??????</empltmoblab> Now when displayed in pdf, this is displayed like this: ?????? This means I am getting just the reverse. I want it as it is in xml node. Thank you.

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  • .NET OutOfMemoryException on XMLSerializer.Serialize

    - by Micah
    I have a web site that is throwing OutOfMemoryExceptions on whenever it gets to the following spot in my code: XmlSerializer xs = new XmlSerializer(t, xoverrides); Seeing how this only happens when it is on the web server, i don't have a ton of information on why this is happening. I know that the objects that it is serializing aren't anything too serious-- definitely less than a MB each. Have you had this before? Feel like helping me diagnose the issue? Any help is appreciated. Thanks!

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  • help with batch file using WINRAR please

    - by Jessie
    i need help with batch file for WINRAR pleasee hi i am trying to use winrar to convert all my different folders individually from one location to another. example: c:\projects\test c:\projects\country c:\projects\db to c:\backup\test.rar c:\backup\country.rar c:\backup\db.rar I am trying the following cmd, which works but what it does is that it gets all the folders in the projects folder into the backup for /f "delims==" %%D in ('DIR C:\projects /A /B /S') do ( "C:\Program Files\WinRAR\WinRAR.EXE" m -r "c:\backup\projects.rar" "%%D" ) but this is what it does c:\backup\project.rar (it does contain all the files if i extract) i want them separetely can you please help?

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  • What are the pro and cons of having localization files vs hard coded variables in source code?

    - by corgrath
    Definitions: Files: Having the localization phrases stored in a physical file that gets read at application start-up and the phrases are stored in the memory to be accessed via util-methods. The phrases are stored in key-value format. One file per language. Variables: The localization texts are stored as hard code variables in the application's source code. The variables are complex data types and depending on the current language, the appropriate phrase is returned. Background: The application is a Java Servlet and the developers use Eclipse as their primary IDE. Some brief pro and cons: Since Eclipse is use, tracking and finding unused localizations are easier when they are saved as variables, compared to having them in a file. However the application's source code becomes bigger and bloated. What are the pro and cons of having localization text in files versus hard coded varibles in source code? What do you do and why?

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  • Detect if camera is capturing in Flash

    - by Ben
    I'm having trouble with Camera.getCamera() in Flash AS3. If there are multiple camera drivers, it does not necessarily pick the correct one. If the default is the correct, the program works fine; however, if another driver is selected as the default then LED on the webcam does not come on and no video is captured. I can cycle through the available cams and select an arbitrary one. I don't, however, know how to determine if the selected camera is correct. It is not returning null. I considered using camera.currentFPS, but it's not clear when this gets updated. I'm really struggling to determine dynamically which camera will do the trick!

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  • MPI C fprintf() output not showing up if the process hangs on MPI_Recv

    - by Karolis
    I'm writing an MPI C program. I have troubles debugging it, because whenever I use fprintf, like this: fprintf(stdout, "worker: %d", worker); if the program hangs, because of some blocking MPI_Recv, I can't see any output. I'm sure the line of code is reached, because I can put a return statement after the fprintf statement, in which case the process finishes execution and the output is printed. Any ideas, on how to print (see the output) even though the process gets blocked later by Recv? I hope this makes sense.

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  • ASP.NET MVC Persisting mdoel's ID value when Editing

    - by user295017
    public Edit(int? id){ /* Codes */ } [HttpPost] public Edit(Item model){ /* Codes */ } I retrieve a copy of Item in the first Edit method, which would contain a value for ItemID. But when it gets to the HttpPost method, the id value's lost. If switched to public Edit(int? ItemID){ /* Codes */ } [HttpPost] public Edit(Item model){ /* Codes */ } this way ItemID can be persisted in the Item model. But is this a good way to handle it? Will ASP.NET MVC always be able to know that it needs to plug "ItemID" into Item? and are there other ways to persist the ID value? Thanks.

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  • audio stream sampling rate in linux

    - by farhan
    Im trying read and store samples from an audio microphone in linux using C/C++. Using PCM ioctls i setup the device to have a certain sampling rate say 10Khz using the SOUND_PCM_WRITE_RATE ioctl etc. The device gets setup correctly and im able to read back from the device after setup using the "read". int got = read(itsFd, b.getDataPtr(), b.sizeBytes()); The problem i have is that after setting the appropriate sampling rate i have a thread that continuously reads from /dev/dsp1 and stores these samples, but the number of samples that i get for 1 second of recording are way off the sampling rate and always orders of magnitude more than the set sampling rate. Any ideas where to begin on figuring out what might be the problem?

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  • How can I "slide up" a view on android from the bottom of a screen?

    - by Jakub Arnold
    I'm trying to make a really simple slide up list view, which is displayed when a user clicks on a button at the bottom of the screen. Here's how it should look: And a complete implementation in HTML/JS http://jsbin.com/utAQOVA/1/edit I've tried to use RelativeLayout to position the list just below the button, and put that whole thing into a wrapper and then animate that up/down (same as in the JSBin above). The problem is that the bottom part which isn't visible in the beginning is somehow clipped, even if I slide it up. Evern if I initially show a portion of the list as the screenshow below shows, the bottom part gets clipped when it moves up and only the part that was initially visible is displayed. What would be a proper approach to do this kind of animation? Here's a relevant portion of the layout

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  • What do angle brackets around an eclipse perspective mean?

    - by Karin
    I wrote a new perspective for our Eclipse RCP Project. The perspective worked fine, but because of a malconfiguration I had to revert to an earlier code-version in which this perspective didn't exist yet. The strange thing is it still gets shown in the "open perspective" Dialog. The only difference is, that it is now in angle brackets and appears two times. What do the angle brackets mean? (unresolved title perhaps?) And how can I get rid of these entries? Thanks a lot!

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  • COMET chat application - IIS7 slows down over time

    - by Yaron
    I have built a chat application which uses this code to push messages to clients (web pages) and to monitor online users and their information. Basically, the code creates and manages a custom thread pool for maintaining the list of connected users & their state. The application was hosted on a shared hosting account (IIS6), and worked fine. After moving the site (ASP.Net App) to a dedicated virtual server it seems I have a problem where IIS7 gets slower and slower as time passes, and my only "solution" is to restart IIS. I am trying to look at the performance counters and have do idea on which one to look.

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  • Can you open an SPSite object while being within a different site collection?

    - by Chris Stewart
    I'm working on creating a common navigation experience across two site collections in MOSS 2007. I've looked around for various solutions and haven't found anything that fits. Our navigation is dynamic and driven by a number of factors, including audience targeting. Most of what I've found relates to having static XML and that just won't work for our requirements. What I'm down to at the moment is just getting a navigation item from site collection A while in the context of site collection B. Are there reasons I shouldn't be able to just open a navigation item from site collection A and gets its audience? Certainly there could be permissions problems on my end, or code related issues, or things that are in my control. What I'm wondering is if there's something inherent to SharePoint that would not allow this. Something I don't have control over which would force me to travel a different path.

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  • How to wrap Plone authentication around a third-party servlet?

    - by smocking
    We're using Plone to serve up some third-party middle-ware. Unfortunately the middle-ware has a particular servlet that gets invoked from a Java applet and doesn't do any kind of authentication. I would like to firewall this off and somehow wrap authentication around it, preferably using the existing session that users will have on Plone. My first idea was to configure nginx (which we're using as the reverse proxy) to check the cookie and only proxy if the user has a valid session (along the lines of this example). However, how to check the session ID against Plone, since it's all stored in the Zope database? Alternatively we could have a Plone python script that basically passes everything along to the back-end after authenticating, but I'm not sure how to do that. Any suggestions? Or alternative ideas?

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  • Understanding Ruby Enumerable#map (with more complex blocks)

    - by mstksg
    Let's say I have a function def odd_or_even n if n%2 == 0 return :even else return :odd end end And I had a simple enumerable array simple = [1,2,3,4,5] And I ran it through map, with my function, using a do-end block: simple.map do |n| odd_or_even(n) end # => [:odd,:even,:odd,:even,:odd] How could I do this without, say, defining the function in the first place? For example, # does not work simple.map do |n| if n%2 == 0 return :even else return :odd end end # Desired result: # => [:odd,:even,:odd,:even,:odd] is not valid ruby, and the compiler gets mad at me for even thinking about it. But how would I implement an equivalent sort of thing, that works?

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  • Safari javascript cookie issue

    - by Aaron Moodie
    I've hit a bit of a weird issue in Safari in regards to setting a js cookie. The cookie itself is just a rgb colour value, which gets set using .click(), and is working fine in Chrome and Firefox, yet in Safari the value of the cookie is incomplete, showing up as rgb(193 instead of rgb(193, 184, 76) as the other browsers do. The jQuery function I'm using to set the cookie is: $('.project_link a').click(function() { var link_colour = $(this).css("color"); document.cookie = "colour="+link_colour+";expires=;path=/"; });

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  • How to "serialize" and "deserialize" command line arguments to string in bash?

    - by Vi
    I call my script: $ ./script 'a!#*`*& ^$' "sdf sdf\"qw sdsdf" 1 -- 2 3 It gets arguments: 1: a!#*`*& ^$ 2: sdf sdf"qw sdsdf 3: 1 4: -- 5: 2 6: 3 If I need to call something with the same arguments locally, I do this: someprogram "$@" But how can I put all that array to a string (to store in file or in environment variable or pass over TCP eaisly) and then turn it back to command line arguments somewhere? I want it to be simple, short and secure. export CMDLINE="$@" # What is in CMDLINE now? Escaped or not? sh -c "someprogram $CMDLINE" # Will it do what I mean? Ideally I want two bash subroutines: the first turns turns any Bash array into a [a-zA-Z0-9_]* string, the other turns it back to Bash array I can use.

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  • asking the container to notify your application whenever a session is about to timeout in Java

    - by user136101
    Which method(s) can be used to ask the container to notify your application whenever a session is about to timeout?(choose all that apply) A. HttpSessionListener.sessionDestroyed -- correct B. HttpSessionBindingListener.valueBound C. HttpSessionBindingListener.valueUnbound -- correct this is kind of round-about but if you have an attribute class this is a way to be informed of a timeout D. HttpSessionBindingEvent.sessionDestroyed -- no such method E. HttpSessionAttributeListener.attributeRemoved -- removing an attribute isn’t tightly associated with a session timeout F. HttpSessionActivationListener.sessionWillPassivate -- session passivation is different than timeout I agree with option A. 1) But C is doubtful How can value unbound be tightly coupled with session timeout.It is just the callback method when an attribute gets removed. 2) and if C is correct, E should also be correct. HttpSessionAttributeListener is just a class that wants to know when any type of attribute has been added, removed, or replaced in a session. It is implemented by any class. HttpSessionBindingListener exists so that the attribute itself can find out when it has been added to or removed from a session and the attribute class must implement this interface to achieve it. Any ideas…

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  • R: How to pass a list of selection expressions (strings in this case) to the subset function?

    - by John
    Here is some example data: data = data.frame(series = c("1a", "1b", "1e"), reading = c(0.1, 0.4, 0.6)) > data series reading 1 1a 0.1 2 1b 0.4 3 1e 0.6 Which I can pull out selective single rows using subset: > subset (data, series == "1a") series reading 1 1a 0.1 And pull out multiple rows using a logical OR > subset (data, series == "1a" | series == "1e") series reading 1 1a 0.1 3 1e 0.6 But if I have a long list of series expressions, this gets really annoying to input, so I'd prefer to define them in a better way, something like this: series_you_want = c("1a", "1e") (although even this sucks a little) and be able to do something like this, subset (data, series == series_you_want) The above obviously fails, I'm just not sure what the best way to do this is?

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  • When a li is appended, does it not become a part of the ul "for real"?

    - by Noor
    I have right now this code: <ul><li class="listitem">text<li></ul> jQuery: $('.listitem').click(function() { $("#elname").text($(this).text()); $('#slists').css('visibility','hidden') $('#elname').css('visibility','visible') $('#elname').css('display','inline-block') }); This is supposed to hide a div and it does, but when I append items to the ul (with the class listitem) nothing happens with the appended item, the class it gets is correct, the title, and the value too. Can this have something to do with the code above being in the document ready function to do?

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