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• DES?AES?RC4, which encryption method should I use for cellphone Encode and Decode?

  - by Mike108

  I have an asp.net web app storing user's cellphone number in Sql Server 2005. I want to use C# to encode cellphone number for security reason. Which encryption method should I use for cellphone Encode and Decode? DES?AES?RC4 or something else?

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• Would Python make a good substitute for the Windows command-line/batch scripts?

  - by Lawrence Johnston

  I've got some experience with Bash, which I don't mind, but now that I'm doing a lot of Windows development I'm needing to do basic stuff/write basic scripts using the Windows command-line language. For some reason said language really irritates me, so I was considering learning Python and using that instead. Is Python suitable for such things? Moving files around, creating scripts to do things like unzipping a backup and restoring a SQL database, etc.

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• Why there are no semicolons and {} blocks in some languages

  - by Incognito

  I know the question has no practical value, but it is interesting why in some languages semicolons and {} blocks are removed although their predecessor have them. Actually it makes me nervous to write a code in Python as there are no ";" and {}. Also in new language Google-GO semicolons are also missing although it says that lexer uses a rule to insert semicolons automatically as it scans. So is there any secret :) reason for this.

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• Why save output until the end?

  - by user509006

  Very quick question about programming practices here: I've always used echo() to output HTML code to the user as soon as it was generated, and used ob_start() at the same time to be able to output headers later in the code. Recently, I was made aware that this is bad programming practice and I should be saving HTML output until the end. Is there a reason for this? What is it, and why isn't output buffering a good alternative? Thanks!

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• Adding multiple images to AnimateDrawables sample code in Android

  - by Nator

  Hello, I was trying to add more than one images in the AnimateDrawables under com.example.android.apis.graphics, but for some reason I couldn't. Can anyone post a sample code on how to accomplish it or at least explain it to me? This beginner programmer would really appreciate it. Thanks

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• python 3 self class dict

  - by Jjang

  I am trying to create my own class of dictionary in python 3 which has a field of dict variable and setitem and getitem methods. Though, it doesnt work for some reason. Tried to look around but couldn't find the answer. class myDictionary: def __init(self): self.myDic={} def __setitem__(self, key, value): self.myDic[key]=value I'm getting: 'myDictionary' object has no attribute 'myDic' Any ideas? :)

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• SharpDX Not Implemented Exception

  - by clamp

  What could be the reason I am getting a SharpDX NotImplemented Exception? SharpDX.SharpDXException: HRESULT: [0x80004001], Module: [General], ApiCode: [E_NOTIMPL/Not implemented], Message: Not implemented at SharpDX.Result.CheckError() at SharpDX.MediaFoundation.MediaFactory.Startup(Int32 version, Int32 dwFlags) at SharpDX.MediaFoundation.MediaManager.Startup(Boolean useLightVersion) this is on windows 8 desktop. the same code runs fine on windows 7.

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• session[:key] = value doesn't work

  - by Bill Leeper

  I am trying to make use of session data in my application and for some reason I don't have something setup right. The code: session[:key] = some_value Generates the following error: The error occurred while evaluating nil.[] Other controllers don't have an issue with the session, so I am guessing I missed some basic configuration thing somewhere.

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• Hairstyle of transparent textures

  - by kk

  Add a transparent texture hair model In O3d within the scene that there will be light through the effect What is the reason Thanks for.

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• why cant we call start method twice on a same instance of the Thread object?

  - by GK

  I was reading about the thread and found that we cant call start method twice on the same thread instance. But i didnt get the exact reason for the same. so why we cant call it twice or even more times?

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• why jquery can't be used in my $(document).ready() function?

  - by Firegun

  The page can be viewed at http://cistrome.org/cps/seqconfig?did=2693 When load in Firebugs, it gives me this error: TypeError: $(".open_gene").on is not a function [Break On This Error] $(".open_gene").on('change', function(event) { However, if I type in this expression in Firebug's console, it can be evaluated as a function without any problems: >>> $(".open_gene").on function() I was wondering what might be the reason to cause this issue. Does anyone have ideas about this? Thanks!

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• Why is this span above the text? I want it beside the text.

  - by alex

  <td valign="center" colspan="2"> <a href="" class="table_desc" > <span class="desc_info_butt"></span> </a> text here </td> .desc_info_butt{ background:url(Description_Button.png) top left no-repeat; height:16px; width:16px; display:block; } For some reason, the image and text appear on two different lines!~

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• There's @interface in my @implementation — why is that?

  - by Mark McDonald

  This is a pretty noobish question – I'm looking at some Cocoa sample code and there's @interface blocks in the .m files as well as the headers. For instance, in the AppDelegate class header, a UIWindow and UI navigation are defined as instance variables, but the @property declarations are actually made in the implementation file. Is there a functional reason for this, is it a stylistic choice, or… ?

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• Django user get_all_permissions() is empty while user_permissions is set

  - by Murkin

  Hello I added some permissions to a user via the admin interface. From some reason all the perm functions fail, e.g >>> user.get_all_permissions() set([]) But accessing the table directly, works: >>> user.user_permissions.all() (list of permissions as expected) What can cause the "get_all_permissions" (and all the perm functions like has_perm()) to fail ? Thanks

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• What is the difference between these two statements (asp.net/c#/entity framework)

  - by user318573

  IEnumerable<Department> myQuery = (from D in myContext.Departments orderby D.DeptName select D); var myQuery = (from D in myContext.Departments orderby D.DeptName select D); What is the difference between these two statements above? In my little asp.net/C#/ EF4.0 app I can write them either way, and as far as how I want to use them, they both work, but there has to be a reason why I would choose one over the other?

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• Why isn't Chrome displaying my div?

  - by Kyle Sevenoaks

  Click here to see a simple example of what I want. It's really easy, but for some reason Google won't display it. It's part of a foreach loop, if needed I can add other codes. There is nothing else in the rest of the css to mess with this, I have checked about 10 times. Thanks.

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• Flex 3: creationComplete alert in repeater... question about getting repeater.currentIndex

  - by Brds

  I have a repeater to call a child... my code is as follows: <mx:Repeater id="projectRP" dataProvider="{projectsHttp.lastResult.project}"> <Block:project id="wholeProject" projectID="{projectRP.currentIndex}" workingTitle="{projectRP.currentItem.workingTitle}" projectTitle="{projectRP.currentItem.projName}" startDate="{textToDate(projectRP.currentItem.startDate)}" projectPositions="{XML(projectRP.currentItem.positions)}" creationComplete="Alert.show(String(projectRP.currentIndex))" /> </mx:Repeater> For some reason, the creationComplete piece isn't s

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• I call session_start() the script hangs and nothing happens

  - by shovon

  I am running php5, however as soon as I call session_start() the script hangs and nothing happens. Is anyone else experiencing this problem, or am I doing something incorrectly? I am using session_start() on index.php and for some reason sometimes it'll fail. No warnings, no errors, no notices, not even after prepending error_reporting(E_ALL) and ini_set('display_errors', TRUE) before session_start() do I see anything, it just plain dies.

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• Sed not reconizing \t instead it is treating it as 't' why?

  - by sixtyfootersdude

  sed "s/\(.*\)/\t\1/" $filename > $sedTmpFile && mv $sedTmpFile $filename I am expecting this sed script to insert a tab in font of every line in $filename however it is not. For some reason it is inserting a t instead.. Strange..

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• Image is not load Texture value is -1

  - by Mitali

  hi i Want to know what is the reason image is not load but a white view is open.When i debug the texture vale and summary value is -1. My Code is: _textures[kTexture_Background] = [[Texture2D alloc] initWithImage: [UIImage imageNamed:@"backgroundimage.png"]]; Thanks

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• What is a valid use for Response.Redirect("SomeURL", false) ?

  - by Aheho

  In ASP.NET I frequently use Response.Redirect to redirect the end user to another page on my system. I always set the second parameter to true to immediately end the response. For the life of me, I can't think of a reason why anybody would ever set that parameter to true. What's the point of continuing generating a page when the end user's browser is just going to be redirected to a different page immediately?

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• Rendering UML diagrams from text files

  - by Per Ersson

  Is there any good tool or tool-chain that allows UML images in the .svg format to be created from a textual source file? The reason for this question is that I want to automate the generation of these images to avoid having to manually create and update this set of images.

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• Find out which object being added to NSMutableArray is nil

  - by Raphael Caixeta

  I started a project using ARC, and I'm inserting a few objects into an NSMutableArray. The objects have all started out as NSStrings, and when attempting to add these objects into the array, I get the following error: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: ' -[__NSArrayM insertObject:atIndex:]: object cannot be nil This array is holding several objects. Is there a quick way for me to find which of the objects I'm attempting to put into the array is nil?

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• Concurrent processes do not utilize all available CPU

  - by metdos

  I run some processes on an EC2 cc2.8xlarge instance which has 32 virtual processors. For some type of processes, when I run 16 processes on parallel, all of them use 100% of CPU cycles. But for other type of processes, they are not using 100% CPU and they finish considerably slower than a single thread. There is no time spend on IO and all data is served from memory. Do you have any idea about the reason of this problem?

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• Is it the best practice to extract an interface for every class?

  - by the_drow

  I have seen code where every class has an interface that it implements. Sometimes there is no common interface for them all. They are just there and they are used instead of concreate objects. They do not offer a generic interface for two classes and are specific to the domain of the problem that the class solves. Is there any reason to do that?

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