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• Ruby equivalent to "grep -C 5" to get context of lines around the match?

  - by wonderfulthunk

  I've searched for this a bit but I must be using the wrong terms - does ruby have a way to grep for a string/regex and also return the surrounding 5 lines (above and below)? I know I could just call "grep -C 5 ..."or even write my own method, but it seems like something ruby would have and I'm just not using the right search terms.

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• SQLite trigger to update Summary Counts

  - by jrhicks

  Consider the following two (hypothetical) tables Temperature * day * time * lake_name * station * temperature_f Temperature_summary * day * lake_name * station * count_readings_over_75f * count_readings_below_75f How can I write an SQLite Trigger to update the temperature_summary table on insert. I want to increment the count. Thank You, Jeff

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• Does any one know is there any collision detection API for HTML5 Canvas..?

  - by angos

  I have been experimenting HTML5 canvas by coding basic mind-mapping application. I have tried to find out if there is any javascript API used for managing object in canvas like collision detection between images or shapes. I think it is not a good idea to write my own since there might be some good API around. Anyone have clue or some information on this. I would very much appreciate.

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• Managing trace files on Sql Server 2005

  - by Sophtware

  I need to manage the trace files for a database on Sql Server 2005 Express Edition. The C2 audit logging is turned on for the database, and the files that it's creating are eating up a lot of space. Can this be done from within Sql Server, or do I need to write a service to monitor these files and take the appropriate actions? I found the [master].[sys].[trace] table with the trace file properties. Does anyone know the meaning of the fields in this table?

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• How do I execute a stored procedure once for each row returned by query?

  - by Ryan

  I have a stored procedure that alters user data in a certain way. I pass it user_id and it does it's thing. I want to run a query on a table and then for each user_id I find run the stored procedure once on that user_id How would I write query for this? SQL SERVER

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• Exception handling in c#

  - by Lalit

  Hi all, I know how to use try...catch block in c#. Also know why it is using. but what is exact meaning of Exception handling ? see once i write the try {}.. Catch{} i handled null exception then what should happen? what are the standard for exception handling. means what should happen is normally expected if exception occur ?

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• Question on XJB

  - by Hima

  I have two tables -- INSTALL_BUILD_RESULTS and BUILD_RESULTS. IBR has a primary key called Install_Build_Id and BR has a primary key called Build_Id. Both are numbers A third table, LINK_BUILD_TO_INSTALL_BUILD is a table simply consisting of the two columns mentioned above, used together as a composite key. How can I write an xjb for these 3 tables.

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• How to learn open source library API without good documentation

  - by Turtle

  I am recently working on the open source library openmetaverse which is designed as an open source substitution of second life viewer. I think the problem is that it is not well documented. Sometimes, I just misunderstand the API when I really used it in real program which is very annoying because sometimes you need to write many code. But how to make sure the API just acts the way you expected? So what is your way to learn new API without good documentation?

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• As a web developer, which browser do you prefer, and why? [closed]

  - by Scott Ferguson

  If you are a web developer: Which web browser do you use as your primary development tool. Why? What killer feature(s) does your browser of choice give you that helps you write better web applications?

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• C# - Password Database

  - by user335932

  So I want to make a program that allows you to store and search for user names/passwords for online sites there signed up to. I know C# has some database options but I don't know much about it. I also heard that it can read/write excel files. Whats do you think is best for storing the data? ALSO do databases need to be stored online on a sever, or can they reside in the program files?

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• Query scope within a table trigger in an Oracle database

  - by sisslack

  I'm been trying to write a table trigger the queries another table that is outside the schema where the trigger will reside. Is this possible? It seems like I have no problem querying tables in my schema but I get: Error: ORA-00942: table or view does not exist when trying trying to query tables outside my schema. The documentation seems to elude to this notion, but it's not 100% clear to me.

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• Rails: How to to download a file from a http and save it into database

  - by Chris

  Hi, i would like to create a Rails controller that download a serie of jpg files from the web and directly write them into database as binary (I am not trying to do an upload form) Any clue on the way to do that ? Thank you Edit : Here is some code I already wrote using attachment-fu gem : http = Net::HTTP.new('awebsite', 443) http.use_ssl = true http.verify_mode = OpenSSL::SSL::VERIFY_NONE http.start() { |http| req = Net::HTTP::Get.new("image.jpg") req.basic_auth login, password response = http.request(req) attachment = Attachment.new(:uploaded_data => response.body) attachement.save } And I get an "undefined method `content_type' for #" error

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• unix process id

  - by swathi

  how to a Write a script that runs a 5 instances of a child process in the background (at a gap of 5 seconds) and do a continuous check to see if any of the child process is completed it starts another instance of the same process till the child process has executed 20 instances.

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• XUL - Access to image information

  - by Murali

  Hello All, I trying to figure out how to write a Firefox extension that would give image information when i right-click on the image. Basically, I want image path when user right-clicks on the image. Any help would be greatly appreciated. Thanks.

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• To get which function/line threw exception in javascript

  - by uzay95

  I am trying to create a Exception class to get and send errors from client to server. I want to catch exception in javascript function and push the details to the web service to write to database. But i couldn't get how to get which function/line throwed this exception. Is there any way to solve this?

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• i want to get id through passing values in sql server 2008?

  - by jaykanth

  id Ptypefield Value 1 1 D 2 1 E 3 1 F 4 1 G 5 1 H 6 2 FL 7 2 IF 8 2 VVS1 9 2 VVS2 10 2 VS1 11 2 VS2 12 3 0.50 13 3 1.00 14 3 1.50 15 3 2.00 16 4 Marquise 17 4 Round 18 4 Pear 19 4 Radiant 20 4 Princess this table i want to get id no i give value like D and F my ans is 1 and 3 please write a query

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• Make sure bad patterns don't come back after refactoring

  - by Let_Me_Be

  I'm refactoring an old C code. The code has absolutely no layered architecture (everything is being accessed by everything) and I'm trying to change that. I would like to cut direct access to structure members (at least write for now) and only allow access through access functions. Is there some tool (or perhaps directly the compiler) that could check this rule for me? I need this since I'm maintaining a fork and the upstream isn't very concerned with code quality.

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• SiteMap RootNode, get all child nodes where rootnode = "Home"

  - by WingMan20-10

  I wanted to write if/for each statement that will get me all the child node where the rootNode = "home" this is what i have so far if (topLevelNode.Title == "Home") { var topLevelNodes = SiteMap...... } foreach (SiteMapNode node in topLevelNodes) { ........................... }

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• How can I validate a "does not match" type using CodeIgniter's Form Validation class?

  - by Shamoon

  I want to ensure that a certain text field does not contain a specific value. Is there any way for me to do this using CI's Form Validation class or do I have to write my own extension for it?

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• Visual Studio solution parser

  - by gsirianni

  I'm looking for a tool that reads a .sln file and parses out all the sub projects and then parses all the sub project files into a list so that I can write a build list for a release? I just want the directory structure of the entier solution minus any excess that may exist in the solution's directory structure.

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• Getting An Array Result From A C# Method

  - by Soo

  I am trying to write some code to return an array in C#, but don't know the proper syntax. I think my method is set up correctly, but to set an array to the result of the method is what I'm having difficulty with. Method Declaration: double[,] function(double variable) { ... code ... return array }

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• Bubbling up events . .

  - by oo

  I have multiple layers in an application and i find myself having to bubble up events to the GUI layer for doing status bar changes, etc . . I find myself having to write repeated coded where each layer simply subscribes to events from the lower layer and then in the call back simply raise an event up the chain. Is there a more efficient way of doing this?

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• Access check on folder in java

  - by Bhaskar

  I'm using the following code to check the access on selected folder. but it's not working. private boolean writeAccess(String path){ try { AccessController.checkPermission(new FilePermission(path, "read,write"));/*,*/ // Has permission return true; } catch (SecurityException e) { // Does not have permission return false; } } wt is prblm in it. and is there any other options to check the existance and access on the folders/directories?

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• Java writes bad wave files

  - by Cliff

  I'm writing out wave files in Java using AudioInputStream output = new AudioInputStream(new ByteArrayInputStream(rawPCMSamples), new AudioFormat(22000,16,1,true,false), rawPCMSamples.length) AudioSystem.write(output, AudioFileFormat.Type.WAVE, new FileOutputStream('somefile.wav')) And I get what appears to be corrupt wave files on OSX. They won't play from Finder however using the same code behind a servlet writing directly to the response stream and setting the Content-Type to audio/wave seems to play fine in quicktime. What gives?

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• Is it possible to make svn execute a script each time when someone commited something?

  - by user198729

  I've install subversion, and want to write my own script to automate the web deployment. Is it possible to trigger the script when commiting? It's neither ssh nor apache based, only rely on svnserve.

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