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  • Do i need to apply htmlspecialchars / htmlentites on json array?

    - by Imran Omar Bukhsh
    I wanted to ask that in a php script of mine which I am accessing through an ajax request, I am returning json data ( converted from an array ) as such echo json_encode($row_array); I get this data in jquery and display it in a form. Do i need to apply htmlspecialchars / htmlentites before returning the data? Is do then whats the correct way to do it? The following code gives me an error: echo htmlentities(json_encode($row_array)); Thanking you Imran

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  • How to handle Android SimpleExpandableListAdapter entry selection.

    - by DaveG
    I have created an expandable list in my Android application using the SimpleExpandableListAdapter type. But I'm at a complete loss as to how I detect events when one of the child entries has been selected/clicked. I've tried all the usual OnClickListener/OnChildClickListener etc, but can't seem to find (by experimentation, or half an hour googling) what the correct handler routines should be. Any help greatfully appreciated.

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  • Linux Kernel Threads - scheduler

    - by Kartlee
    Hi People, Is Linux Kernel scheduler a part of init process? My understanding is that it is part of Kernel threads managed internally not visible to user by either top or ps. Please correct my understanding. Is it possible to view standard kernel threads through any kernel debugger to see how standard threads occupy cpu activity? -Kartlee

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  • pitfalls/disadvantages of functional programming

    - by CrazyJugglerDrummer
    When would you NOT want to use functional programming? What is it not so good at? I am more looking for disadvantages of the paradigm as a whole, not things like "not widely used", or "no good debugger available". Those answers may be correct as of now, but they deal with FP being a new concept (an unavoidable issue) and not any inherent qualities. Related: pitfalls of object oriented programming advantages of functional programming

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  • subprocess.Popen doesn't work when args is sequence

    - by pero
    I'm having a problem with subprocess.Popen when args parameter is given as sequence. For example: import subprocess maildir = "/home/support/Maildir" This works (it prints the correct size of /home/support/Maildir dir): size = subprocess.Popen(["du -s -b " + maildir], shell=True, stdout=subprocess.PIPE).communicate()[0].split()[0] print size But, this doesn't work (try it): size = subprocess.Popen(["du", "-s -b", maildir], shell=True, stdout=subprocess.PIPE).communicate()[0].split()[0] print size What's wrong?

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  • Traceroute Theory

    - by Hamza Yerlikaya
    I am toying with trace route, my application send a ICMP echo request with a ttl of 0 every time i receive a time exceeded message i increment the ttl by one and resent the package, but what happens is I have 2 routers on my network i can trace the route through these router but third hop always ends up being one of the open dns servers same ip every time no matter where i traceroute to. AFAIK this is the correct traceroute implementation, can anyone tell me what i am doing wrong?

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  • Bluepay Security Error

    - by Shima
    Hi all, I am trying to implement bluepay payment service in my PHP project,but I'm getting a return message of "Security Error". Here's the exact debug page results: Response: STATUS=E&MESSAGE=SECURITY%20ERROR Trans Id: Status: E AVS Resp: CVV2 Resp: Auth Code: Message: SECURITY ERROR Rebid: I'm using the correct merchant ID and Secret Key. Does anyone has any idea!!!! Please help me!

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  • How can I reliably check client identity whilst making DCOM calls to a C# .Net 3.5 Server?

    - by pionium
    Hi, I have an old Win32 C++ DCOM Server that I am rewriting to use C# .Net 3.5. The client applications sit on remote XP machines and are also written in C++. These clients must remain unchanged, hence I must implement the interfaces on new .Net objects. This has been done, and is working successfully regarding the implementation of the interfaces, and all of the calls are correctly being made from the old clients to the new .Net objects. However, I'm having problems obtaining the identity of the calling user from the DCOM Client. In order to try to identify the user who instigated the DCOM call, I have the following code on the server... [DllImport("ole32.dll")] static extern int CoImpersonateClient(); [DllImport("ole32.dll")] static extern int CoRevertToSelf(); private string CallingUser { get { string sCallingUser = null; if (CoImpersonateClient() == 0) { WindowsPrincipal wp = System.Threading.Thread.CurrentPrincipal as WindowsPrincipal; if (wp != null) { WindowsIdentity wi = wp.Identity as WindowsIdentity; if (wi != null && !string.IsNullOrEmpty(wi.Name)) sCallingUser = wi.Name; } if (CoRevertToSelf() != 0) ReportWin32Error("CoRevertToSelf"); } else ReportWin32Error("CoImpersonateClient"); return sCallingUser; } } private static void ReportWin32Error(string sFailingCall) { Win32Exception ex = new Win32Exception(); Logger.Write("Call to " + sFailingCall + " FAILED: " + ex.Message); } When I get the CallingUser property, the value returned the first few times is correct and the correct user name is identified, however, after 3 or 4 different users have successfully made calls (and it varies, so I can't be more specific), further users seem to be identified as users who had made earlier calls. What I have noticed is that the first few users have their DCOM calls handled on their own thread (ie all calls from a particular client are handled by a single unique thread), and then subsequent users are being handled by the same threads as the earlier users, and after the call to CoImpersonateClient(), the CurrentPrincipal matches that of the initial user of that thread. To Illustrate: User Tom makes DCOM calls which are handled by thread 1 (CurrentPrincipal correctly identifies Tom) User Dick makes DCOM calls which are handled by thread 2 (CurrentPrincipal correctly identifies Dick) User Harry makes DCOM calls which are handled by thread 3 (CurrentPrincipal correctly identifies Harry) User Bob makes DCOM calls which are handled by thread 3 (CurrentPrincipal incorrectly identifies him as Harry) As you can see in this illustration, calls from clients Harry and Bob are being handled on thread 3, and the server is identifying the calling client as Harry. Is there something that I am doing wrong? Are there any caveats or restrictions on using Impersonations in this way? Is there a better or different way that I can RELIABLY achieve what I am trying to do? All help would be greatly appreciated. Regards Andrew

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  • .NET Get timezone offset by timezone name

    - by Daniil Harik
    Hello, In database I store all date/times in UTC. I know user's timezone name ("US Eastern Standard Time" for example). In order to display correct time I was thinking that I need to add user's timezone offset to UTC date/time. But how would I get timezone offset by timezone name? Thank You!

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  • Formatting webView content

    - by Samuh
    I am getting some HTML text from a remote server which I am displaying inside a WebView. I need to format the text display and set a font size and color for the WebView. The only way I can think of is: pre-pending the HTML string received with a tag and specify the font information there. What is the correct way to do this?

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  • C# 4.0 'dynamic' and foreach statement

    - by ControlFlow
    Not long time before I've discovered, that new dynamic keyword doesn't work well with the C#'s foreach statement: using System; sealed class Foo { public struct FooEnumerator { int value; public bool MoveNext() { return true; } public int Current { get { return value++; } } } public FooEnumerator GetEnumerator() { return new FooEnumerator(); } static void Main() { foreach (int x in new Foo()) { Console.WriteLine(x); if (x >= 100) break; } foreach (int x in (dynamic)new Foo()) { // :) Console.WriteLine(x); if (x >= 100) break; } } } I've expected that iterating over the dynamic variable should work completely as if the type of collection variable is known at compile time. I've discovered that the second loop actually is looked like this when is compiled: foreach (object x in (IEnumerable) /* dynamic cast */ (object) new Foo()) { ... } and every access to the x variable results with the dynamic lookup/cast so C# ignores that I've specify the correct x's type in the foreach statement - that was a bit surprising for me... And also, C# compiler completely ignores that collection from dynamically typed variable may implements IEnumerable<T> interface! The full foreach statement behavior is described in the C# 4.0 specification 8.8.4 The foreach statement article. But... It's perfectly possible to implement the same behavior at runtime! It's possible to add an extra CSharpBinderFlags.ForEachCast flag, correct the emmited code to looks like: foreach (int x in (IEnumerable<int>) /* dynamic cast with the CSharpBinderFlags.ForEachCast flag */ (object) new Foo()) { ... } And add some extra logic to CSharpConvertBinder: Wrap IEnumerable collections and IEnumerator's to IEnumerable<T>/IEnumerator<T>. Wrap collections doesn't implementing Ienumerable<T>/IEnumerator<T> to implement this interfaces. So today foreach statement iterates over dynamic completely different from iterating over statically known collection variable and completely ignores the type information, specified by user. All that results with the different iteration behavior (IEnumarble<T>-implementing collections is being iterated as only IEnumerable-implementing) and more than 150x slowdown when iterating over dynamic. Simple fix will results a much better performance: foreach (int x in (IEnumerable<int>) dynamicVariable) { But why I should write code like this? It's very nicely to see that sometimes C# 4.0 dynamic works completely the same if the type will be known at compile-time, but it's very sadly to see that dynamic works completely different where IT CAN works the same as statically typed code. So my question is: why foreach over dynamic works different from foreach over anything else?

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  • How to calculate Least Signficant Byte in Ruby

    - by Seth Archer
    I'm sending a byte array to a piece of hardware. The first 7 bytes contain data and the 8th byte is a checksum. The 8th byte is the Least Significant Byte of the sum of the first 7 bytes. Examples that include the correct checksum. The last byte of each of these is the checksum 200-30-7-5-1-2-0-245 42-0-0-1-176-0-148-39 42-0-0-3-177-0-201-118 How do I calculate the checksum? Thanks, Seth

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  • Passing a custom variable to the PayPal API

    - by Michael
    Gday All, I am developing a site that uses PayPal to take online payments. I need to be able to send my client an email with the link to PayPal in order to pay. In this link I need a way to set a unique value (for example bookingId) that I can use to add the receipt number to the correct booking via PayPal's payment notification feature. Does anyone know what custom value I can set in order to achieve this? Cheers, Michael

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  • How can I use the Graphviz macro in XWiki 2.0 syntax?

    - by DR
    The XWiki FAQ gives an example for XWiki 1.0 syntax: {graphviz:type=dot}digraph G {Hello->world}{graphviz} My XWiki is properly set up to display this. But I'm not able to translate this into XWiki 2.0 syntax. I tried this {{graphviz type=dot}} ... {{/graphviz}} and other variations, but the best I got was about "graphviz" not being a valid macro. What's the correct syntax?

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  • Zend DB returning NULL value

    - by davykiash
    I have the following query that extends from Zend_DB_Table_Abstract $select = $this->select() ->from('expense_details', array('SUM(expense_details_amount) AS total')) ->where('YEAR(expense_details_date) = ?', '2010') ->where('MONTH(expense_details_date) = ?', '01') ->where('expense_details_linkemail = ?', '[email protected]'); However it returning a NULL value despite its "equivalent" returning the desired value SELECT SUM(expense_details_amount) AS total FROM expense_details WHERE YEAR(expense_details_date) = '2010' AND MONTH(expense_details_date) = '01' AND expense_details_linkemail = '[email protected]' Is my Zend_DB_Table construct above correct?

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  • Azure storage: Uploaded files with size zero bytes

    - by Fabio Milheiro
    When I upload an image file to a blob, the image is uploaded apparently successfully (no errors). When I go to cloud storage studio, the file is there, but with a size of 0 (zero) bytes. The following is the code that I am using: // These two methods belong to the ContentService class used to upload // files in the storage. public void SetContent(HttpPostedFileBase file, string filename, bool overwrite) { CloudBlobContainer blobContainer = GetContainer(); var blob = blobContainer.GetBlobReference(filename); if (file != null) { blob.Properties.ContentType = file.ContentType; blob.UploadFromStream(file.InputStream); } else { blob.Properties.ContentType = "application/octet-stream"; blob.UploadByteArray(new byte[1]); } } public string UploadFile(HttpPostedFileBase file, string uploadPath) { if (file.ContentLength == 0) { return null; } string filename; int indexBar = file.FileName.LastIndexOf('\\'); if (indexBar > -1) { filename = DateTime.UtcNow.Ticks + file.FileName.Substring(indexBar + 1); } else { filename = DateTime.UtcNow.Ticks + file.FileName; } ContentService.Instance.SetContent(file, Helper.CombinePath(uploadPath, filename), true); return filename; } // The above code is called by this code. HttpPostedFileBase newFile = Request.Files["newFile"] as HttpPostedFileBase; ContentService service = new ContentService(); blog.Image = service.UploadFile(newFile, string.Format("{0}{1}", Constants.Paths.BlogImages, blog.RowKey)); Before the image file is uploaded to the storage, the Property InputStream from the HttpPostedFileBase appears to be fine (the size of the of image corresponds to what is expected! And no exceptions are thrown). And the really strange thing is that this works perfectly in other cases (uploading Power Points or even other images from the Worker role). The code that calls the SetContent method seems to be exactly the same and file seems to be correct since a new file with zero bytes is created at the correct location. Does any one have any suggestion please? I debugged this code dozens of times and I cannot see the problem. Any suggestions are welcome! Thanks

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  • problem in AudioStreaming in Iphone Sdk?

    - by senthilmuthu
    I am using sample code of audioStream.zip, it gives wrong total amount of playing time (2.3 sec after played completely through streaming).... for checking purpose ,i checked through downloading that Mp3 file into Document Directory and played in Itune it exactly is played for 2.10 seconds.(correct time) is there any sample code for AudioStreaming except that one to give right Total playing Time?

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  • Versions of Enum

    - by phenevo
    Hi, I've got Enum: public enum ObjectType { Country=0, Region=1, Province=2, City=3, Hotel=4 } I have two applications in two language versions, and this Enum is displaying in some place, so depends of language version I wanna displaying correct version of Enum in german version instead Country Land etc. This Application are using the same websercice which has declaration of this enum.

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  • Linq-to-SQL Grouping not ordering correctly

    - by Grant
    Hi can someone help me convert this tsql statement into c# linq2sql? select [series] from table group by [series] order by max([date]) desc This is what i have so far - the list is not in correct order.. var x = from c in db.Table orderby c.Date descending group c by c.Series into d select d.Key;

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  • Difference of 2 NSArray's for animated insert/delete in UITableView

    - by Alexander Cohen
    At some point in my Application, I have an NSArray whose contents change. Those contents are shown in a UITableView. I'm trying to find a way to find the diff between the contents of before and after of the NSArray so i can pass the correct indexPaths to insertRowsAtIndexPaths:withRowAnimation: and deleteRowsAtIndexPaths:withRowAnimation: in order to have the changes nicely animated. Any ideas? thx

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