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• RSA Factorization problem

  - by dada

  At class we found this programming problem, and currently, we have no idea how to solve it. The positive integer n is given. It is known that n = p * q, where p and q are primes, p<=q and |q-k*p|<10^5 for some given positive integer k. You must find p and q. Input: 35 1 121 1 1000730021 9 Output: 5 * 7 11 * 11 10007 * 100003 It's not a homework, we are just trying to solve some interesting problems. If you have some ideas, please post them here so we can try something, thanks.

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• Use only some parts of Django?

  - by Hanno Fietz

  I like Django, but for a particular application I would like to use only parts of it, but I'm not familiar enough with how Django works on the inside, so maybe someone can point me into the right direction as to what I have to check out. Specifically, I want to use: The models and database abstraction The caching API, although I want to avoid database lookups by caching, not HTML generation, and since the caching framework in Django is intended for the latter, I'm not sure yet whether that's really appropriate. I would not use: Templating urlconfigs Or, more exactly, I'm neither using HTTP nor HTML. So basically, I have a different input / output chain than usual. Can this work? My personal killer feature in Django is the Object / database mapping that I can do with the models, so if there's another technology (doesn't have to be Python, I'm in the design phase and I'm pretty agnostic about languages and platforms) that gives me the same abilities, that would be great, too.

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• SATA hard disk for laptop on Desktop PC

  - by Lawliet

  I know that this forum is for programming-related questions only, but I'm having this dilemma so here I go. Can I connect a laptop SATA hard disk to Desktop PC? Do I have to use some adapters or I can just plug in SATA power connector and SATA data cable like my Desktop hard disk is connected? I noticed that both laptop and desktop SATA disks use same connectors, but I'm afraid that I might fry my laptop hard disk because the SATA connector has both 12V and 5V voltage (given the fact that laptop hard disks has input voltage of 5V) Thanks in advance

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• analysis Big Oh notation psuedocode

  - by tesshu

  I'm having trouble getting my head around algorithm analysis. I seem to be okay identifying linear or squared algorithms but am totally lost with nlogn or logn algorithms, these seem to stem mainly from while loops? Heres an example I was looking at: Algorithm Calculate(A,n) Input: Array A of size n t?0 for i?0 to n-1 do if A[i] is an odd number then Q.enqueue(A[i]) else while Q is not empty do t?t+Q.dequeue() while Q is not empty do t?t+Q.dequeue() return t My best guess is the for loop is executed n times, its nested while loop q times making NQ and the final while loop also Q times resulting in O(NQ +Q) which is linear? I am probably totally wrong. Any help would be much appreciated. thanks

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• Reset form with jQuery

  - by da5id

  I have a form with a standard reset button coded thusly: <input type="reset" class="button standard" value="Clear" /> Trouble is, said form is of the multi-stage sort, so if a user fills out a stage & then returns later, the 'remembered' values for the various fields won't reset when the Clear button is clicked. I'm thinking that attaching a jQuery function to loop over all the fields and clear them 'manually' would do the trick. I'm already using jQuery within the form, but am only just getting up to speed & so am not sure how to go about this, other than individually referencing each field by ID, which doesn't seem very efficient. TIA for any help.

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• How can I use images provided by the iPhone OS?

  - by Topher Fangio

  Hello all, First, let me state what brought this question about: I saw the green checkmark icon in this post and I would like to use it in my own application. However, since it looks so much like the UITableViewCellAccessoryDetailDisclosureButton my assumption is that this green checkmark icon is provided by the iPhone OS in some form or fashion. So, my question is: how can I use the green checkmark icon and/or other OS-provided images in my own applications? As a side question: where can I find a list of the OS-provided images (if they even exist)? Thanks very much for any input :-)

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• Python: writing a program to compute the area of a circle and square

  - by user1672504

  I have a question with an assignment. I'm not sure how to write this program and I really need help! Could someone help me with this? This is the assignment: Write a program that asks the user to enter two values: an integer choice and a real number x. If choice is 1, compute and display the area of a circle of radius x. If choice is 2, compute and display the are of a square with sides of length x. If choice is neither 1, nor 2, will display the text Invalid choice. Sample run: Enter choice: 2 Enter x: 8 The area is: 64.0 Sample run: Enter choice: 1 Enter x: 8 The area is: 201.06176 My attempt: choice = input ('Enter Choice:') choice_1 = int (choice) if (choice_1==1): radius = (int) print('Enter x:',radius) pi = 3.14159 area = ( radius ** 2 ) * pi print ( 'The Area is=' , area )

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• Adding a SVN repository in Eclipse

  - by Baltimark

  I'm trying to add an svn repository to eclipse. I've installed subclipse, and it seems to be working fine. But, when I try to "add a new SVN repository", I input this, for example: http://svn.python.org/projects/peps/trunk I get this: Error validating location: "org.tigris.subversion.javahl.ClientException: RA layer request failed svn: OPTIONS of 'http://svn.python.org/projects/peps/trunk': could not connect to server (http://svn.python.org) " Keep location anyway? I know that my eclipse can connect to the 'net because I downloaded subclipse earlier (I had to change my proxy settings). I get a similar message for other SVN locations I've tried to add. Anyone have any solutions?

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• Submitting a form on 'Enter' with jQuery?

  - by b. e. hollenbeck

  I have a bog-standard login form - an email text field, a password field and a submit button on an AIR project that's using HTML/jQuery. When I hit Enter on the form, the entire form's contents vanish, but the form isn't submitted. Does anyone know if this is a Webkit issue (Adobe AIR uses Webkit for HTML), or if I've bunged things up? I tried: $('.input').keypress(function(e){ if(e.which == 13){ $('form#login').submit(); } }); But that neither stopped the clearing behavior, or submitted the form. There's no action associated with the form - could that be the issue? Can I put a javascript function in the action?

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• Question about a http form GET method, using query arguments

  - by Lasse V. Karlsen

  I am looking at a bug in WebSVN where when I get into a file log and click on compare, it looses the repository name as part of the request. The details are unimportant. However, I've tracked down the bug to a http form that looks like this: <form method="get" action="comp.php?repname=Binaries&amp;" id="compare"> .... <input type="hidden" name="KEY" value="VALUE"> Is this supposed to work? Will both the "repname" argument, specified as part of the URL, and the hidden value be sent? It seems Chrome 4.1 only sends the hidden argument, and removes the repname parameter altogether. Is this correct? I fixed it temporarily, pending more information, by adding another hidden field for repname with the same value, and now everything works, I'm just wondering if Chrome or WebSVN is in fault here.

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• How to Use .NET Assembly from Legacy SQL Server 2000 DTS

  - by shyneman

  Hi All, I have a .NET assembly that needs to be called from a DTS package. There are two options I am considering to get this to work: 1) write a COM-callable wrapper for the .NET assembly and have the VBScript create the COM object to use 2) write a .NET command-line exe that uses that .NET assembly and have the VBScript execute that exe Can anybody comment on the pros/cons of either approach and which is the better way of doing this? If there are other solutions, I'd love to hear them too. Thanks a lot for any input.

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• Run JavaScript after a DropDownList is DataBound

  - by Daniel Coffman

  I need to trigger a JavaScript function to be called AFTER a DropDownList on my ASP.NET WebForms page is DataBound, because the SelectedIndex of this DropDownList is the parameter to the JavaScript function. I've tried this various ways, but it seems that if I do it with pure JavaScript onload by using ClientScript.RegisterStartUpScript, the control can be found (because it hasn't been assigned a clientID yet?). If I use jQuery (document).ready { } it says that the DropDownList has no selectedIndex.value. So I need some JavaScript to run AFTER the control has a value set by the DataBind. How can I accomplish this? onChanged won't work because I need the function to fire on the first page load, with no user input. DataBinding the SelectedIndex of the DropDownList doesn't cause the JavaScript onChanged event to fire.

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• Changing constraints on the fly

  - by GoinOff

  Hi, I have a dijit.form.NumberTextBox input field that starts out with these parms: new dijit.form.NumberTextBox({ id: din1, style: "width:60px", constraints: { places: 0, pattern: '######' } }, din1); Everything works great..My question is I would like to change 'places' and 'pattern' parms on the fly. So I wrote this to change 'places' and 'patterns' parms: var myFldObj = dijit.byId(din1); if (myFldObj) { var myConstObj = myFldObj.attr('constraints'); if (myConstObj) { myConstObj.places = 2; myConstObj.pattern = '#####.0'; } } So, after I show the form again, I'd expect the entry field to allow 2 decimal places but the form still acts like places=0 and pattern='######'. When I check the values of 'places' and 'pattern' I get what I'd expect (2 and #####.0). My question: Can you change these values on the fly?? OR Do you have to destroy the original dijit object and recreate with new parms?? Thx!!

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• MySQL Insert Statement Queue

  - by Justin

  We are building an ajax application in which a users input is submitted for processing to a php script. We are currently writing every request to a log file for tracking. I would like to move this tracking into a database table but I do not want to run a insert statement after request. What I would like to do is set up a 'queue' of transactions (inserts and updates) that need to be processed on the MySQL database. I would then set up a cron job or process to check and process the transactions in the queue. Is there something out there that we could build upon or do we have to just write to plain ol' text log files and process them?

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• What are some of best Javascript memory detecting tools?

  - by Philip Fourie

  Our team is faced with slow but serious Javascript memory leak. We have read up on the normal causes for memory leaks in Javascript (eg. closures and circular references). We tried to avoid those pitfalls in the code but it likely we still have unknown mistakes left in our code. I started my search for available tools but would like input from people with actual experience with these tools. Some of the tools I found so far (but have no idea how good and useful they would be for our problem): Sieve Drip JavaScript Memory Leak Detector Our search is not limited to free tools, it will be a bonus, but more importantly something that will get the job done. We do the following in our Javascript code: AJAX calls to a .NET WCF back-end that send back JSON data Manipulate the DOM Keep a fairly sized object model in the Javascript to store current state

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• How do I get the current color of a fragment?

  - by Mason Wheeler

  I'm trying to wrap my head around shaders in GLSL, and I've found some useful resources and tutorials, but I keep running into a wall for something that ought to be fundamental and trivial: how does my fragment shader retrieve the color of the current fragment? You set the final color by saying gl_FragColor = whatever, but apparently that's an output-only value. How do you get the original color of the input so you can perform calculations on it? That's got to be in a variable somewhere, but if anyone out there knows its name, they don't seem to have recorded it in any tutorial or documentation that I've run across so far, and it's driving me up the wall.

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• Fluent NHibernate MappingException : could not instantiate id generator

  - by Mark Simpson

  I'm pottering around with Fluent NHibernate to try and get a simple app up and running. I'm running through this Fluent NHibernate Tutorial. Everything seems to be going fine and I've created the required classes etc. and it all builds, but when I run the test, I get an exception. Someone in the comments section of the tutorial has the same problem, but I can't find any good information on what's causing it. Any help appreciated. It's probably something trivial. Exception details: FluentNHTest.Tests.Mappings.CustomerMappingTests.ValidateMappings: FluentNHibernate.Cfg.FluentConfigurationException : An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail. ---- FluentNHibernate.Cfg.FluentConfigurationException : An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail. ---- NHibernate.MappingException : could not instantiate id generator ---- System.FormatException : Input string was not in a correct format.

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• How to decrypt IRC Bot's blowfish encrypted messages.

  - by Arsheep

  I am making an IRC bot in php to read content of a channel. Bot is done fine.But the messages are encrypted With blowfish encryption. i have the key and all, i tried PHP's code below but didn;t worked. echo mcrypt_decrypt(MCRYPT_BLOWFISH,$key,$input,MCRYPT_MODE_ECB); For more help the encryption is done via drftpd site bot. I can find this link http://trac.drftpd.org/browser/branches/jpf/src/plugins/org.drftpd.plugins.sitebot/src/org/drftpd/plugins/sitebot/OutputWriter.java?rev=1721 Written in Java so may be some Java guy can help too .

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• How to compare the output of serializeArray using qunit

  - by dorelal

  I am using qunit and jquery. Latest version of both. In my code when I submit the form I have the event as e. I call e.serializeArray() Here is my test. equals(args.data, [ { "name": "user_name", "value": "john" } ], 'input data'); And this is the error message from qunit. expected: [ { "name": "user_name", "value": "david" } ] result: [ { "name": "user_name", "value": "david" } ] As you can see to the naked eye the expected and result value is same but qunit is not liking it. I guess I am missing something.

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• Edit my message before posting in Twitter with Twitter API and PHP

  - by novellino

  I am having a site and I want to add a button in my site that will link to the twitter login page and after login it will post a message to the Twitter home page of the user. I used this code: http://www.matpal.com/2010/12/oauth-access-token-in-twitter-api.html and it works fine. My problem is that before posting the message I want to be able to edit it. So after login I want to see my message in an editing input (like retween do,here: http://www.mobilemarketer.com/cms/news/search/10263.html ) and post it after clicking Tweet. Does anyone know how can I do this? Thanks in advance

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• Spring - disable bind exceptions (for a particular property)

  - by Walter White

  Hi all, In a web application I'm working on using Spring 2.5.6.SEC01, I essentially have an Integer field that takes a number to determine which page to scroll to. The requirements changed, and we no longer want to display an error message, but simply ignore the user's input if they enter an invalid number, say "adfadf". I was reading that you can do that via: TypeMismatch.property=Some New Error Message However, after having tried that, we are still getting the original error message: java.lang.Integer.TypeMismatch=... I only want to disable this message for that given property. How can I do that? I still want binding to occur automatically, I just don't want to hear about it now. Walter

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• DataNucleus Enhancer flakey?

  - by KevMo

  I'm creating a GWT app in Google App Engine, and using Google data store. Does anybody else have the problem of the DataNucleus being flakey as all get out? I can save a class, and DataNucleus will do it's thing just fine. If I change ANYTHING in the class (even adding whitespace) and then save, I get the following error: DataNucleus Enhancer completed with success for 0 classes. Timings : input=37 ms, enhance=0 ms, total=37 ms. Consult the log for full details DataNucleus Enhancer completed and no classes were enhanced. Consult the log for full details Once I clean my project, DataNucleus is happy again. Is this common when using eclipse? Is there a workaround?

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• GoTo statements, and alternatives (help me please im new) (VB.net)

  - by qais

  Basically I posted a code snippet on a forum asking for help and people pointed out to me that using GoTo statements is very bad programming practise so I'm just wondering, why is it bad? And also what alternative is there to use, like for example in this program ive done for homework the user has to input their date of birth and if the month/date/year are invalid or unrealistic(using if statements checking the integer inputs size, if theres any better way to do this i'd appreciate if you could tell me that also :D) then how would i be able to loop back to ask them again? heres a little extract of my code retryday: Console.WriteLine("Please enter the day you were born : ") day = Console.ReadLine If day > 31 Or day < 1 Then Console.WriteLine("Please enter a valid day") GoTo retryday End If

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• Handling "Big" Integers in C#

  - by priyanka.sarkar

  How do I handle big integers in C#? I have a function that will give me the product of divisors: private static int GetDivisorProduct(int N, int product) { for (int i = 1; i < N; i++) { if (N % i == 0) { Console.WriteLine(i.ToString()); product *= i; } } return product; } The calling function is GetDivisorProduct(N, 1) If the result is bigger than 4 digits , I should obtain only the last 4 digits. ( E.g. If I give an input of 957, the output is 7493 after trimming out only the last four values. The actual result is 876467493.). Other sample inputs: If I give 10000, the output is 0. The BigInteger class has been removed from the C# library! How can I get the last four digits?

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• Dismissing pickers and keyboards invoked by a UIWebView

  - by Dev Kanchen

  I am implementing an in-app browser using UIWebView, that shows an 'action' button up-top that - when tapped - scales the UIWebView and allows the user to perform some other actions. If, however, at the point of tapping this 'action' button, the user were entering some text on the webview, or using a picker to select an option from a drop-down list, then the webview gets scaled without dismissing the keyboard/picker. Apart from being ugly, this also obscures my main view and controls. So is there a way to make a UIWebView dismiss all associated input controls, such as keyboards/pickers, when asked to? I tried using [myWebView resignFirstResponder] but that didn't work. Any ideas? Thanks.

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