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• Inverted index in a search engine

  - by Ayman

  Hello there, I'm trying to write some code to make a small application for searching text from files. Files should be crawled, and I need to put an inverted index to boost searches. My problem is that I kind of have ideas about how the parser would be, I'm willing to implement the AND, NOT, OR in the query. Whereas, I couldn't figure out how my index should be... I have never created an inverted index so if any body could suggest a feasable way to do it I would be very grateful... I do know in theory how it works but my problem is I absolutely have no idea to make happen in MySql I need to give keywords being indexed a weight too... Thank you so much.

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• navigateToUrl AS3 is not opening a web browser

  - by Ronnie

  I have a textField on my stage named 'adBuy', which when clicked I want to open up my browser with the defined in URL request. However when I click on the 'adBuy' textField on my SWF it opens Coda, the piece of software I'm using to write this small piece of code? I am puzzled. Here is my code: adBuy.defaultTextFormat = adFormat; adBuy.textColor = 0xFF65CB; adBuy.x = 640; adBuy.y = 455; adBuy.text = "Buy Now"; parent.addChild(adBuy); adBuy.addEventListener(MouseEvent.CLICK, buyAdvert); var request:URLRequest = new URLRequest("http://www.google.co.uk"); function buyAdvert(event:MouseEvent):void { navigateToURL(request, "_blank"); trace("link clicked"); } Is there an error in my code, or is this a common problem for which there is an answer?

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• SharpSSH gets stuck in an infinite stream read in C# SSH app

  - by Ric Coles

  Afternoon all, I'm having a small problem with the SharpSSH library for .Net (see http://www.tamirgal.com/blog/page/SharpSSH.aspx) SshStream ssh = new SshStream("some ip address", "some username", "some password"); ssh.Prompt = "\n"; ssh.RemoveTerminalEmulationCharacters = true; ssh.Write("ssh some ip address"); // Don't care about this response ssh.ReadResponse(); ssh.Write("lss /mnt/sata[1-4]"); // Don't care about this response (for now) ssh.ReadResponse(); // while the stream can be read while (ssh.CanRead) { Console.WriteLine(ssh.ReadResponse()); } ssh.Close(); As you can see, it's fairly straight forward. However, when the while-loop gets stepped into, it won't break out of the loop when everything has been printed to the console and there is nothing else to read. Is there anyway I can manually force it to break when there is nothing else to be read? Cheers, Ric

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• Branch by abstraction: Are there "examples" of how it can be done?

  - by Philipp Keller

  Having read Martin Fowlers "Feature Branch" and Flickrs "Flipping Out" (http://www.liip.to/flippingout) I guess there are a few guys out there who do: all (or most) development on Trunk release Trunk regularly (assuming updating your web site) not-yet-approved or not-yet-finished features should not be visible/have no impact on the regular user I've got 2 questions: granted - Flickr's article seems to work for "frontend code". But how is it cleaned up? Don't the ifs pile up? how does this work for the more "backend part"? Thinking of database changes, or model refactoring. Working with ifs doesn't seem to work - and copy-pasting classes for small adaptions also seems awkward. Are there any articles out there answering these 2 questions?

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• Debugging with only the .exe

  - by Franklin Albricias

  HI: I've a Delphi 7 program that I wrote many years ago, but I've lost the source code. It's a small program but very useful for me. I've tried to 'install' it again in a new Windows XP computer, just copying the folder with de data (.db paradox files), and configured the BDE connection. When the programm starts I receive an "Unknown exception" and halts. I've no idea why this happens, and can't debug cause the lost source code. I've tried in another computer with the same results. Any suggestions or ideas? What do you do in a situation like this? Thanks in advance.

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• Is it possible to drag windows between workspaces when using Compiz?

  - by Mike Stone

  When I used Metacity, I could drag windows between workspaces using the small icon view of my workspaces. I recently started using Compiz for all the cool desktop effects, however this drag and drop feature isn't working. I use the cube effect for switching workspaces, but I noticed the wall effect doesn't allow it either. Is this just a missing feature from Compiz or is there a setting somewhere that I can enable it? I know that I can enable dragging windows across edges to the next workspace, and the expose feature to drag windows between workspaces. However, the drag and drop on the icon view is really powerful, and I would love to have it back along with all the great Compiz special effects.

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• Unable to reverse seemingly simple rails migration - getting "altered_table.column may not be NULL"

  - by brad

  I have a table 'invoices' in my development database (sqlite3) populated with a small amount of test data. I wanted to add a column 'invoice_number' to it and set up a migration like so: class AddInvoiceNumberColumnToInvoices < ActiveRecord::Migration def self.up add_column :invoices, :invoice_number, :integer end def self.down remove_column :invoices, :invoice_number end end I ran rake db:migrate and it seemed to migrate just fine. However, when I tried to access this column through ActiveRecord it didn't seem to be there. I decided to undo this migration and try again (not sure what I was going to try but I thought I'd start by undoing it) with rake db:migrate VERSION='whatever_the_migration_before_this_one_was_called'. This failed with the error message == AddInvoiceNumberColumnToInvoices: reverting =============================== -- remove_column(:invoices, :invoice_number) rake aborted! An error has occurred, this and all later migrations canceled: altered_invoices.invoice_number may not be NULL I can't find any documentation of this error. Is anyone able to explain what I have done wrong, and more importantly how I can fix this?

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• Live Character Count For EditText Android

  - by Taylor Perkins

  Hello, I was wondering what the best way to do a live character count of an edit-text box is in Android. I was looking at this but I couldn't seem to make any sense of it. To describe the problem, I have an EditText and I'm trying to limit the characters to 150. I can do this with an input filter, however I want to show right below the text box the number of characters a user has entered(Almost like stack overflow is doing right now). If someone could write a small snippet of example code or point me in the right direction I'd appreciate it a lot. Thanks in advance.

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• Design a GUI browser to view a tree

  - by iamrohitbanga

  I have a large tree. I want to be able to visualize it using a GUI tool. I want the ability to pan and zoom the tree image so that i can focus on part of the tree. Is there an existing tool to achieve this? If not i would like to write a small tool for myself to be able to do this. what is the simplest way of doing this? what computer language should i use? the image should look something like http://upload.wikimedia.org/wikipedia/commons/d/df/Binary_tree.png I should be able to zoom and pan the image.

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• Using sphinx to create context sensitive html help

  - by bluebill

  Hi all, I am currently using AsciiDoc (http://www.methods.co.nz/asciidoc/) for documenting my software projects because it supports pdf and html help generation. I am currently running it through cygwin so that the a2x tool chain functions properly. This works well for me but is a pain to setup on other windows computers. I have been looking for alternative methods and recently revisited Sphinx. Noticing that it now produces html help files I gave it a try and it seems to work well in the small tests I performed. My question is, is there a way to specify map id's for context sensitive help in the text so that my windows programs can call the proper help api and the file is launched and opened to the desired location? In AsciiDoc I am using "pass::[]". By using these constructs a context.h and alias.h are generated along with the other html help files (context sensitive help information).

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• Packaging up ASPX, CSS and image files

  - by silves89

  I'm designing a simple framework for small websites to be used in an intranet. The websites will all be similar, but there will be a few pages, or controls on pages, that are different. I would like to be able to version and maintain the common framework part of the websites as if they were a regular library - if I need to update CSS then I only have to do it in one place. Can I package-up ASPX files, images and CSS and distribute them like this? What am I missing? My goal is to allow the developers of the few core content pages to get up and running with the websites quickly, with standard styles and images. Thanks!

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• Handling inverted pixels in bitmapData and bitmap class in as3

  - by intoTHEwild

  I am using bitmapData and bitmap classes to render a mouse cursor on the display screen. The bitmapData consists of an area whose colors should be inverted according to the background color. This is a very basic thing which could be observed with text cursor(the vertical line with two small horizontals on top and bottom), when moved over the text area. I want to be able to do the same with the pixels in my bitmapData, is there a way to find out the background color effectively and invert the color values? In this process i will be redrawing the whole pixels, is there any other efficient way to do that ?

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• javascript trying to get 3rd nested array.length and value

  - by adardesign

  How can i get the 3rd nested array (in this case the array starting with "yellow") the array looks like this: [ ["Large", ["yellow", "green", "Blue"], ["$55.00", "$55.00", "$55.00"] ["Medium", ["yellow", "green", "Blue", "Red"], ["$55.00", "$55.00", "$55.00", "$55.00"] ] ["small", ["yellow", "green", "Blue", "Red"], ["$55.00", "$55.00", "$55.00", "$55.00"] ] ] I am trying to get to the ["yellow", "green", "Blue"] array's length and loop to get the values for(i=0; colorNSize.dataArray[0][0][1].length<i; i++){ alert(colorNSize.dataArray[colorNSize.Sizeindex][0][0][i])// alert's nothing } It actually alerts the length of "Large" which is "5" is there a limit for nested arrays? Can this be done?

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• Help with parsing lxml

  - by Casey

  Hi To implement a college project, I need to handle XML files. For this I choose lxml after doing some research. However I can't seem to find some nice tutorial to help me get started. I can't choose most specifically which type of parsing I need to use. My XML files don't have that much data but speed is main concern, not memory. Can anyone point me to some tutorial that would help me or some book that I can lookup? I have already tried the tutorial on lxml site but that didn't help me much. Is there some small application I can look up to get a hang of parsing XML with lxml

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• Need help parsing file/writing script

  - by Bradley Herman

  Hey all, I have been doing nothing but web development over the last few years and haven't written any Java or C++ in what feels like forever. I don't necessarily need to use these languages, so I'm entirely open to suggestion. I was given an email list by a client to import into their mailchimp account yesterday and unfortunately, Mailchimp couldn't read the file. It's a text file, but I don't believe it's tab delimited (which would make this much, much easier for me). A small portion of the file (I've changed last names and email addresses) can be viewed here: http://sparktoignite.com/patients.txt If anyone has suggestions on how I can get this into a Mailchimp readable format (csv, tab delimited txt, excel) please let me know. I feel like 3 years ago I would've been able to do this in a matter of minutes, but given that I haven't touched anything other than RoR, PHP, and jQuery for the last few years, I don't know where to start. Thanks!

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• Infix to Postfix and unary/binary operators

  - by Jaapjan

  I have a piece of code that converts an infix expression to an expression tree in memory. This works just fine. There's just one small trouble. I just connect work out how to involve the unary operators correctly (the right associative ones). With the following infix expression : +1 + +2 - -3 - -4 I would expect an RPN of: 1+2++3-4-- Yet, none of the online infix-post converters I can find handle this example in the way I would expect. Does anyone have a clear explanation of handling right associative operators, specifically the binary ones that can be mistaken for the unary ones?

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• Java 'Prototype' pattern - new vs clone vs class.newInstance

  - by Guillaume

  In my project there are some 'Prototype' factories that create instances by cloning a final private instance. The author of those factories says that this pattern provides better performance than calling 'new' operator. Using google to get some clues about that, I've found nothing really relevant about that. Here is a small excerpt found in a javdoc from an unknown project javdoc from an unknown project Sadly, clone() is rather slower than calling new. However it is a lot faster than calling java.lang.Class.newInstance(), and somewhat faster than rolling our own "cloner" method. For me it's looking like an old best practice of the java 1.1 time. Does someone know more about this ? Is this a good practice to use that with 'modern' jvm ?

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• What task can I automate in Python that's fun, simple, and useful?

  - by froadie

  I'm trying to learn Python. I'm going to eventually be using it at work, but I don't have an active project in it as of now. I've been reading through some documentation and would like to learn some basics, but I learn best when actually coding. So I'm thinking of attempting a small Python project just to sort of "get my feet wet" in Python. While reading/asking around, I've often heard people say that if you need a Python project you should automate some task you do on your computer on a day-to-day basis. Maybe I'm not so imaginative, but I can't think of anything I'd like to automate... Does anyone have any ideas of something simple, fun, and not too time-consuming that someone can automate to get some basic experience in Python? Something that they would come out of feeling like they accomplished something fun and useful?

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• process taking high time on Itanium server

  - by Vishwa

  Hi, we have an application which is recently migrated from PA-Risk server to itanium server. After migration we noticed that there is significant increase in time taken to complete a process. when we tracked the time taken by each part we found that the system time is 7.590000, user time is 3.990000 but elapsed time is 70.434882!! Due to this huge elapsed time, overall performance of the application has gone very low. i wrote a small progrms to perform I/O operations on Itanium. these scripts working faster on Itanium compared to PA-Risk. what could be the reason for this high elapsed time of this process?

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• Enable scratch buffer to execute R code in emacs-ess

  - by sheed03

  Hello, I have switched to using emacs-ess for my R code development and it is working great. I would like to be able to write some small R code I am using for debugging my R script into the scratch buffer, and be able to execute the scratch buffer code in the R process buffer. I've found how I could change the scratch buffer's mode to text by putting the following in the .emacs file: (setq initial-major-mode 'text-mode) Is there a similar statement I can put in my .emacs file that would make the scratch buffer have the ess-mode? I tried the following which results in an error about wrong type argument: (setq initial-major-mode 'ess-mode)

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• Silverlight Project Not Updating When Ran

  - by Redburn

  I'm currently developing with VS2010 RC and Silverlight 4 and ran into small problem. My project when ran, would show a version I had built about 4 hours ago. (I built the project using the Business Template) The project itself will not update, meaning all the forms, and controls. I did the following: Restarted my computer Restarted Visual Studio Deleted the xap file in the ClientBin folder on the web side Deleted the Generated_Code folder on the client side Deleted the xap file from the Debug folder on the client side Opened the Solution's Configuration Manager and ensuring both my web and client projects are checked. Rebuilt, built, and cleaned every combination of the different projects and solution Is there a known bug or something else I can try?

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• What's the best version control system for handling projects with graphics?

  - by acrosman

  I'm part of a small team (usually just two people), I handle the code, he handles the graphic design. In the past I've used CVS to handle version control of the code files, and while we've included the graphics in the repository, he hasn't derived nearly as much value from it as I have. Are there other packages that provide the better features for supporting graphics? The system would need to have an easy to use GUI interface, as I don't think it's fair to expect a graphic designer to learn command-line tools. Additional aspect: The client software needs to run smoothly on OS X (for the designer), and Windows (for the programmer).

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• Download a file from one ASP.NET web application to other (given the credentials)

  - by Tom S.

  Hi everybody! Im working on a asp.net 3.5 web application (C#), where i have a file with some information that is updated frequently, and only few accounts can access to it (the application is using the asp.net authentication system, stored in a SQL database). My task is to parse that file, so i made a small parser (another web app) a to show the information in a more friendly way. However, everytime i want to parse it, i need to enter in the application with one of those accounts, download the file, put in the parser's folder. Is there any way to, given the username and password, download the file directly from the parser application and use that one? Thanks in advance

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• Using PHP and SQLite

  - by Barry Shittpeas

  I am going to use a small SQLite database to store some data that my application will use. I cant however get the syntax for inserting data into the DB using PHP to correctly work, below is the code that i am trying to run: <?php $day = $_POST["form_Day"]; $hour = $_POST["form_Hour"]; $minute = $_POST["form_Minute"]; $type = $_POST["form_Type"]; $lane = $_POST["form_Lane"]; try { $db = new PDO('sqlite:EVENTS.sqlite'); $db->exec("INSERT INTO events (Day, Hour, Minute, Type, Lane) VALUES ($day, $hour, $minute, $type, $lane);"); $db = NULL; } catch(PDOException $e) { print 'Exception : '.$e->getMessage(); } ?> I have successfully created a SQLite database file using some code that i wrote but i just cant seem to insert data into the database.

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• How to show scrollbars in TScrollBox after it has been made visible again?

  - by aleluja

  Hi, I've ran into one small problem. I am dynamicaly generating some controls and place them on a TScrollbox component. But i noticed that if scrollbox is visible, user can clearly see each of the controls being created and placed. So it looksl ike lots of work is being done and it is slow. I hid the scrollbox and generated all the controls on it, which took much less time and no flickering and alike. But here's the problem. When i unhide the scrollbox, its' scrollbar doesn't appear untill i actually resize the form. (The alignment of scrollbox is alClient) Any ideas on how to fix this? Tried repainting, but it didn't work. Refresh didn't work either. Thank you

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