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Articles indexed Monday April 19 2010

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  • How to make a try-catch block that iterates through all objects of a list and keeps on calling a met

    - by aperson
    Basically iterating through a list and, - Invoke method on first object - Catch first exception (if any); if there are no more exceptions to catch, return normally. Otherwise, keep on invoking method until all exceptions are caught. - Move on to next object. I can iterate through each object, invoke the method, and catch one exception but I do not know how to continuously invoke the method on it and keep on catching exceptions :S Thanks :)

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  • Can I upload an object in memory to FTP using Python?

    - by fsckin
    Here's what I'm doing now: mysock = urllib.urlopen('http://localhost/image.jpg') fileToSave = mysock.read() oFile = open(r"C:\image.jpg",'wb') oFile.write(fileToSave) oFile.close f=file('image.jpg','rb') ftp.storbinary('STOR '+os.path.basename('image.jpg'),f) os.remove('image.jpg') Writing files to disk and then imediately deleting them seems like extra work on the system that should be avoided. Can I upload an object in memory to FTP using Python?

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  • templates and casting operators

    - by Jonathan Swinney
    This code compiles in CodeGear 2009 and Visual Studio 2010 but not gcc. Why? class Foo { public: operator int() const; template <typename T> T get() const { return this->operator T(); } }; Foo::operator int() const { return 5; } The error message is: test.cpp: In member function `T Foo::get() const': test.cpp:6: error: 'const class Foo' has no member named 'operator T'

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  • How to make a table in Silverlight ?

    - by Shnitzel
    So I'd like to make a visible table, with a border around each cell and a different background color for the header. I'd like to eventually insert controls into this. For example, put a textfield inside one of the table elements, or some radio buttons, etc. Is there a control for this? I've narrowed it down to two possibilities, but they both seem kind of "meh": use the Grid Control - I like this but is there a way to color the border on the cell (I did not find this) use the DataGrid Control - this control is just way too complicated for what I need. I'm just looking for an html style table in silverlight, any ideas?

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  • Send mail from a distrobution groups email address

    - by Campo
    A user has send permission on a distro group on a WINDOWS SERVER 2003 domain. I am the admin. When either of us send email using the distrobution groups email adress we get a non delivery report Your message did not reach some or all of the intended recipients. Subject: TEST Sent: 4/19/2010 4:46 PM The following recipient(s) cannot be reached: [email protected] on 4/19/2010 4:46 PM You do not have permission to send to this recipient. For assistance, contact your system administrator. MSEXCH:MSExchangeIS:/DC=local/DC=DOMAIN:SERVERNAME Thanks, JC

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  • Get the parent id..

    - by tixrus
    I have a bunch of elements like the following: <div class="droppableP" id="s-NSW" style="width:78px; height:63px; position: absolute; top: 223px; left: 532px;"> </div> They all have class droppableP but different id's obviously and I would like to factor the code in this script I am hacking on. The original script just has a specific selector for each of one of these divs, but the code is all alike except for the id it does things to, which is either the id of the parent or another div with a name that's related to it. Here is the original code specifically for this div: $("#s-NSW > .sensible").droppable( { accept : "#i-NSW", tolerance : 'intersect', activeClass : 'droppable-active', hoverClass : 'droppable-hover', drop : function() { $('#s-NSW').addClass('s-NSW'); $('#s-NSW').addClass('encastrada'); //can't move any more.. $('#i-NSW').remove(); $('#s-NSW').animate( { opacity: 0.25 },200, 'linear'); checkWin(); } }); Here is how I would like to factor so the same code can do all of them and I will eventually do chaining as well and maybe get rid of the inline styles but here is my first go: $(".droppableP > .sensible").droppable( { accept : "#i" + $(this).parent().attr('id').substring(2), tolerance : 'intersect', activeClass : 'droppable-active', hoverClass : 'droppable-hover', drop : function() { $(this).parent().addClass($(this).parent().attr('id')); $(this).parent().addClass('encastrada'); $("#i" + ($this).parent().attr('id').substring(2)).remove(); $(this).parent().animate( { opacity: 0.25 },200, 'linear'); checkWin(); } }); The error I get is $(this).parent().attr("id") is undefined Many thanks. I have browsed related questions the one I understand that's closest to mine, turns out they didn't need parent function at all. I'm kind of a noob so please don't yell at me too hard if this is a stupid question.

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  • Is there an existing tool for jsonp like fetching of xml in jquery?

    - by BearCode
    Hi, For a web service I'm developing I would like my embedded code (on the client's site) to fetch an xml file from my sever script which resides on my domain. As this is a cross-domain request I figured to use jsonp as it seems the de facto standard for such apis. However, for my application it would be easier for me to use xml instead of json. Now, I could of course convert my xml to json on the server and then back again to xml in the client's site javascript, but that seems unnecessarily cumbersome. What I really need is and xmlp solution, xml with padding. I tired googling but couldn't find a jquery plug-in that does that. Anyone knows a simple solution?

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  • SSL socket connection on iPhone

    - by kevinspacy
    Is there a way to reuse SSL socket connections on the iPhone. I'm seeing an extra 3-4 second overhead in doing SSL handshaking. I'm using NSURLconnection currently to do the API calls and each one of them is taking 4-5 seconds on Wifi. Any suggestions would be greatly appreciated.

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  • How do you create a DropShadow on a UIView

    - by Arpit
    My current code doesnt seem to do anything: CGContextRef currentContext = UIGraphicsGetCurrentContext(); CGContextSaveGState(currentContext); float myColorValues[] = {1.0, 0, 0, .8}; CGColorSpaceRef myColorSpace = CGColorSpaceCreateDeviceRGB(); CGColorRef myColor = CGColorCreate(myColorSpace, myColorValues); CGContextSetShadowWithColor (currentContext, CGSizeMake(-1, -1), 0, myColor); //CGContextSetShadow(currentContext, CGSizeMake(-15, 20), 15); [super drawRect: rect]; CGContextRestoreGState(currentContext);

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  • who free's setvbuf buffer?

    - by Evan Teran
    So I've been digging into how the stdio portion of libc is implemented and I've come across another question. Looking at man setvbuf I see the following: When the first I/O operation occurs on a file, malloc(3) is called, and a buffer is obtained. This makes sense, your program should have a malloc in it for I/O unless you actually use it. My gut reaction to this is that libc will clean up its own mess here. Which I can only assume it does because valgrind reports no memory leaks (they could of course do something dirty and not allocate it via malloc directly... but we'll assume that it literally uses malloc for now). But, you can specify your own buffer too... int main() { char *p = malloc(100); setvbuf(stdio, p, _IOFBF, 100); puts("hello world"); } Oh no, memory leak! valgrind confirms it. So it seems that whenever stdio allocates a buffer on its own, it will get deleted automatically (at the latest on program exit, but perhaps on stream close). But if you specify the buffer explicitly, then you must clean it up yourself. There is a catch though. The man page also says this: You must make sure that the space that buf points to still exists by the time stream is closed, which also happens at program termination. For example, the following is invalid: Now this is getting interesting for the standard streams. How would one properly clean up a manually allocated buffer for them, since they are closed in program termination? I could imagine a "clean this up when I close flag" inside the file struct, but it get hairy because if I read this right doing something like this: setvbuf(stdio, 0, _IOFBF, 100); printf("hello "); setvbuf(stdio, 0, _IOLBF, 100); printf("world\n"); would cause 2 allocations by the standard library because of this sentence: If the argument buf is NULL, only the mode is affected; a new buffer will be allocated on the next read or write operation.

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  • Codeigniter/mySQL question. Checking if several inserts are possible before actual insertion.

    - by Ethan
    Hey SO, So I'm trying to perform a couple inserts at once that are kind of co-dependent on each other. Let's say I'm doing a dog rating website. Anyone can add a dog to my database, but in doing so they also need to add a preliminary rating of the dog. Other people can then rate the dog afterwards. The dogs to ratings is a many to one relationship: a dog has many ratings. This means for my preliminary add, since I have the person both rate and add the dog, I need to take the rating, and set a foreign key to the dog's primary key. As far as I know, this means I have to actually add the dog, then check what that new addition's primary key is, and then put that in my rating before insertion. Now suppose something were to go wrong with the rating's insert, be it a string that's too long, or something that I've overlooked somehow. If the rating's failed, the dog has already been inserted, but the rating has not. In this case, I'd like the dog to not have been added in the first place. Does this mean I have to write code that says "if the rating fails, do a remove for the dog," or is there a way to predict what the key will be for the dog should everything go as planned. Is there a way to say "hold that spot," and then if everything works, add it? Any help would be greatly appreciated. Thanks!!

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  • Problem with making a simple JS XmlHttpRequest call

    - by recipriversexclusion
    I have to create a very simple client that makes GET and POST calls to our server and parses the returned XML. I am writing this in JavaScript, problem is I don't know how to program in JS (started to look into this just this morning)! As n initial test, I am trying to ping to the Twitter API, here's the function that gets called when user enters the URL http://api.twitter.com/1/users/lookup.xml and hits the submit button: function doRequest() { var req_url, req_type, body; req_url = document.getElementById('server_url').value; req_type = document.getElementById('request_type').value; alert("Connecting to url: " + req_url + " with HTTP method: " + req_type); req = new XMLHttpRequest(); req.open(req_type, req_url, false, "username", "passwd");// synchronous conn req.onreadystatechange=function() { if (req.readyState == 4) { alert(req.status); } } req.send(null); } When I run this on FF, I get a Access to restricted URI denied" code: "1012 error on Firebug. Stuff I googled suggested that this was a FF-specific problem so I switched to Chrome. Over there, the second alert comes up, but displays 0 as HTTP status code, which I found weird. Can anyone spot what the problem is? People say this stuff is easier to use with JQuery but learning that on top of JS syntax is a bit too much now.

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  • What kind of language is CSS?

    - by Derek Adair
    What kind of language is CSS? My first inclination was to call it a markup language... but it doesn't really fit the mold. Edit: A markup language is a system for annotating a text in a way which is syntactically distinguishable from that text. -wikipedia CSS uses various selectors to apply properties to elements within HTML, a markup language

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  • VST plugin : using FFT on audio input buffer with arbitrary size, how ?

    - by Led
    I'm getting interested in programming a VST plugin, and I have a basic knowledge of audio dsp's and FFT's. I'd like to use VST.Net, and I'm wondering how to implement an FFT-based effect. The process-code looks like public override void Process(VstAudioBuffer[] inChannels, VstAudioBuffer[] outChannels) If I'm correct, normally the FFT would be applied on the input, some processing would be done on the FFT'd data, and then an inverse-FFT would create the processed soundbuffer. But since the FFT works on a specified buffersize that will most probably be different then the (arbitrary) amount of input/output-samples, how would you handle this ?

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  • Android - where's code for Genie widget?

    - by DroidIn.net
    I've been looking all over http://android.git.kernel.org for Genie Widget code but unfortunately there's no top level search and lot of GITs to go through. If someone can point me to the right location I would really appreciate it. The Genie Widget is also known as News & Weather

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  • Criteria for triggering garbage collection in .Net

    - by Kennet Belenky
    I've come across some curious behavior with regard to garbage collection in .Net. The following program will throw an OutOfMemoryException very quickly (after less than a second on a 32-bit, 2GB machine). The Foo finalizer is never called. class Foo { static Dictionary<Guid, WeakReference> allFoos = new Dictionary<Guid, WeakReference>(); Guid guid = Guid.NewGuid(); byte[] buffer = new byte[1000000]; static Random rand = new Random(); public Foo() { // Uncomment the following line and the program will run forever. // rand.NextBytes(buffer); allFoos[guid] = new WeakReference(this); } ~Foo() { allFoos.Remove(guid); } static public void Main(string args[]) { for (; ; ) { new Foo(); } } } If the rand.nextBytes line is uncommented, it will run ad infinitum, and the Foo finalizer is regularly invoked. Why is that? My best guess is that in the former case, either the CLR or the Windows VMM is lazy about allocating physical memory. The buffer never gets written to, so the physical memory is never used. When the address space runs out, the system crashes. In the latter case, the system runs out of physical memory before it runs out of address space, the GC is triggered and the objects are collected. However, here's the part I don't get. Assuming my theory is correct, why doesn't the GC trigger when the address space runs low? If my theory is incorrect, then what's the real explanation?

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  • iPhone Settings app and keyboard control?

    - by randallmeadows
    So I'm putting my app's preference settings into the Settings app. One of the settings is an edit text field (PSTextFieldSpecifier). When touched, the keyboard dutifully appears, I can make the edits, but when I press Return....nothing. Well, the editing is completed, but the keyboard remains. I see no way to make the keyboard go away. I also notice this same behavior in other Settings panes, including those from Apple. Do I assume correctly that this is just standard behavior and I need to just accept the fact that my Settings table has now been reduced to half size, and just deal? Furthermore, I gather there is no approved way to have a "rich" child pane display, such as that seen in Settings-General-About-Legal? Or a way to do what appears to be a -presentModalViewController, a la Settings-General-Passcode Lock?

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  • How to configure to URLs for One Server using wildcard supported certificates?

    - by Amit
    Hi, We have wildcard supported certificate installed in our production environment. One of our client wants his name to appear in the URL (e.g. companyname.sitename.net). How we should facilitate this? Do we need to make any entries for this in DNS? If yes can you please let me know about it? I need to set this up before Fridat PST, any help in this is highly appriciated. Thanks.

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  • Send mail from a distribution group's email address

    - by Campo
    A user has send permission on a distro group on a WINDOWS SERVER 2003 domain. I am the admin. When either of us sends email using the distribution group's email adress we get a non delivery report Your message did not reach some or all of the intended recipients. Subject: TEST Sent: 4/19/2010 4:46 PM The following recipient(s) cannot be reached: [email protected] on 4/19/2010 4:46 PM You do not have permission to send to this recipient. For assistance, contact your system administrator. MSEXCH:MSExchangeIS:/DC=local/DC=DOMAIN:SERVERNAME Thanks, JC

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  • Windows Server 2003 Standard - how to access other pc's remotely

    - by studiohack
    I'm a novice in the world of servers, and I'm about to install Windows Server 2003 Standard on a server box I have...However, I'm curious if there is a way to access the other PC's in my network remotely via the server (Windows XP Home and Windows 7 Home Premium)? Like say, I'm at a friend's house, and I want to access my Win7 machine via the server, how do I do it? Is it possible? Thanks!

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  • Text to speech during IPhone call

    - by Jonathan
    Is there way to be able to type instead of speak during an iPhone call. For example when you text a landline (in the uk at least) the text message will be converted to speech. I would like to be able to do a similar thing in real time on my iPhone to another mobile. For example it would be useful for a mute person who can not speak to be able to "participate" in phone calls.

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