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• How do I protect my website from javascript injection attacks when using rich text editors?

  - by VJ

  Hi all I am using the markitup editor to get the value for one of my fields and storing it a sql server 2008 db. Now I guess the problem is people having script tags and javascript in the editor and injecting malicious scripts and I have my validate input turned false. So can anyone suggest me a way to write a custom validation method that maybe checks for script tags and removes them...or just guide me through the steps i need to do ?...also are there other things also that I should be worried about..?

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• rails, activerecord callbacks not saving

  - by Joseph Silvashy

  I have a model with a callback that runs after_update: after_update :set_state protected def set_state if self.valid? self.state = 'complete' else self.state = 'in_progress' end end But it doesn't actually save those values, why not? Regardless of if the model is valid or not it won't even write anything, even if i remove the if self.valid? condition, I can't seem to save the state. Um, this might sound dumb, do I need to run save on it?

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• how to close , shut down a WPF application when user need to closed it

  - by Richa Media and services

  how i can write a closed function for our wpf application in Window application we can simply use application.exit(); are any way to closed a wpf application

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• How to compute the dot product?

  - by WizardOfOdds

  I have the following piece of pseudo-C/Java/C# code: int a[]= { 30, 20 }; int b[] = { 40, 50 }; int c[] = {12, 12}; How do I compute the sign of the dot-product AB . AC? I'm only interested in the sign, so I have: boolean signABxAC = ? Now concretely what do I write to get the sign of the dot-product AB . AC?

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• Why writing writing to unconnected socket sends SIGPIPE first?

  - by Lukasz Lew

  There are so many possible errors in POSIX environement. Why some of them (write to unconnected socket in particular) get special treatment in form of signals?

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• Obtain an array of audio sample values and compare them with a threshold

  - by Dora

  I have to write an iPhone application: to start recording when I have something on the audio channel, then to stop the recording after 1.15 s, to obtain a float array with the audio levels and to compare the value to see if they are 0 or 1. Please give me some ideas...I´m a beginner.

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• Writing an older version of Berkeley DB in Java

  - by mrbombastic

  Is it possible to write out an older version of Berkeley DB using the Java interface? The version being 1.85/1.86.

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• AS3:How to change a colored Bitmap's BitmapData to black and white ?

  - by yens resmann

  How can I change the bitmapdata of a coloured Bitmap to Black and White in AS3 ? I'm developing a simple image editor tool for a CMS in flash. People should be able to switch the colour of the uploaded Bitmap to black and white. I want the bitmapdata itself to change So I can write it to a ByteArray with Adobe's JPGEncoder Class afterwards.

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• sequence with and without recursion

  - by Sergey

  I have a sequence. a1 = 1 - cos(x); ai = a1 + (-1)^(i-1) * x^(2*i-2) / (2*i-2)! I need to write this with and without recursion. But it has a different results. Here is my code: http://codepaste.net/q213q6

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• gmail drawing send

  - by siran

  is there some online web app which would let me make a vector drawing, and give me the choice to write some text and send it through gmail ? for the magic to be complete, the web app would save my drawing as png (or whatever) and attach it to the sent email... i guess i would have to give the webapp my gmail account info so it can send it from my account...

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• Download a file with Android, and showing the progress in a ProgressDialog

  - by TomMan

  I am trying to write a simple application that gets updated. For this I need a simple function that can download a file and show the current progress in a ProgressDialog. I know how to do the ProgressDialog, but I'm not sure how to display the current progress and how to download the file in the first place.

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• How can I display php source code

  - by Mehmet Tuncal

  I am trying to do system("cat variables.php"); from a php script but it doesn't write anything :( Anybody knows whats the problem?

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• What is the best approach for writing unit tests for iPhone / iPad ?

  - by Madhup

  I am developing an iPad application. I'm not sure if I should write unit tests for this application, and if so, how I should go about writing them. What would you suggest as the best approach to writing unit tests for iPhone / iPad?

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• HQL Insert Query in Grails

  - by WaZ

  I want to write an insert query in Grails. I have tried all possible combinations but cant get the syntax correct. Can anybody please help? class Person { int age int name } i tried the following: Person.executeUpdate("insert into Person values (20,30)") p.s.:Please do not mention using save()

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• I'm new to OOP/PHP. What's the practicality of visibility and extensibility in classes?

  - by marcdev

  I'm obviously brand new to these concepts. I just don't understand why you would limit access to properties or methods. It seems that you would just write the code according to intended results. Why would you create a private method instead of simply not calling that method? Is it for iterative object creation (if I'm stating that correctly), a multiple developer situation (don't mess up other people's work), or just so you don't mess up your own work accidentally?

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• Terminology: opposite of "zero copy"?

  - by Mark Harrison

  We're benchmarking some code that we've converted to use sendfile(), the linux zero-copy system call. What's the term for the traditional read()/write() loop that sendfile() replaces? I.e., in our report I want to say "zerocopy is X millisecs, and ??? is Y millisecs." What word/phrase should I use?

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• How to order records by a computed column in Criteria API?

  - by bilalsalih

  How can I write the below HQL query using the Criteria API? select s.Name, sum(q.PointsObtained), sum(q.TotalPoints) from Student s join s.Quizzes order by sum(q.PointsObtained) / sum(q.TotalPoints) desc

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• Question on First Order Logic formula

  - by none

  Hi, Can someone validate the following. I am supposed to 'write a formula asserting that for every number there's a unique next number...true for integers for instance' L(x,y) means x is smaller than y the intended Domain is the Integer numbers Can I give ∀x ∀y [ x<y ⇒ ( ∃z : z<x ∨ y<z ) ] Thanks

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• How do I add a expiration date validation to this credit card form

  - by user362050

  Expiration Month var month = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"); for (var m=0; m" +month[m]+ ""); } Expiration Year var year = new Date(); var year2 = year.getFullYear(); for (y=0; y" +(year2+y)+ ""); document.write(""); }

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• Using Page anchors on Google AppEngine?

  - by codingJoe

  I would like to have AppEngine render an html page that auto scrolls to an html anchor point. I'm not how and where to put the that type of instruction. template_values = { 'foo' : 'foo', 'bar': 'bar', 'anchor' : '#MyPageAnchor' # ?? Something like this... } path = os.path.join(os.path.dirname(__file__), fileName) self.response.out.write(template.render(path, template_values)) Is this possible? How do I accomplish this?

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• Elegant way to code if (10 < x < 20)

  - by Danny King

  Hi, Is there an elegant way in Java to code: if (10 < x < 20) { ... } i.e. "if x is between 10 and 20" rather than having to write if ((x > 10) && (x < 20)) { ... } Thanks!

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• How to securely transfer

  - by michaeltk

  I have two servers -- a backend server, and a frontend server. Every night, the backend server generates static .html files, which are then compressed into .tar format. I need to write a script that resides on the backend server that will transfer the .tar file to the frontend server, and then decompress that .tar file into to the public web directory of the frontend server. What is the standard, secure way to do this? Thanks in advance.

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• Zend framework - duplication in translated url

  - by tomasr

  I have these URLs cz/kontroler/akce en/controller/action Is used transatable route and works it like charm. But problem is, that when you will write cz/controller/akce it works as well. In generally when you have cz/something-in-czech en/something-in-english which route to someController, will be works still cz/some en/some because it is really name of controller. How solve this duplicity content issue?

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• SQL Query to get the table names which use a particular column as a foriegn key

  - by vinayvasyani

  What sql query would you write to get the table names which have a particular foriegn key. Eg. Person_Table(person_id,name,address,...) Purchases_Table(purchaseid, purchased_by_id(fkey)....) AccountDetails_Table(AccountId,PersonID,....) Roles_Table(PersonId,RoleID) Now i want to find the table names where Person id is used as a foreign key. The above schema would return me Purchases_Table,AccountDetails_Table, Roles_Table Database: SQL Server

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• graph algorithms

  - by davit-datuashvili

  now one ask please help me to write a few graph algorithms for example http://en.wikipedia.org/wiki/Dijkstra%27s_algorithm there is given such graph my problem is that i want implement graph algorithms on arrays can anybody help me to imlement ddijkstra algorithm on array i want to see one example because it is difficulty for me to understand this pseudocodes which is in internet i mean classes edges and so on please help me

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