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• Mysql - Rank field for a query

  - by Mark

  How can I add a field that contains a rows rank within the result set of a query? Initially I used php to rank my results as it was all on a single page. Now I have added multiple pages so now even though I am on the second page the first result on the page is still '1st'. Obviously I could multiply the page number by the number of results per page and add the result number but I imagine there is a better way within the query. Thanks,

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• What's the most strait-forward way of building for device from a new mac?

  - by cannyboy

  Same iPhone, different machine. First machine builds for device fine. How to get it building for device on the new machine?

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• What's the best way to generate an API reference document using a Rails routes.rb file?

  - by RNHurt

  I am trying to document the API for my Rails application and I can't help but wonder if there is a better way to generate an XML file based on my routes.rb file. I'm envisioning something similar to the output of rake routes but in a more friendly, XML type format. Corey has some interesting ideas about using reflection/introspection on the routes file here but it's not quite what I need. Please tell me this is a solved problem and I'm not the first one to think of this. :)

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• How do I add a custom mod_rewrite rule to a Drupal site on module install?

  - by DKinzer

  I have a Drupal-6 module that needs the following mod-rewrite rule added to the .htaccess file of the site's root directory in order to work. RewriteRule ^blog/([0-9]{4}/[0-9]{2}/[0-9]{2}/.*)$ wordpress/$1 How can I add this line pro-grammatically when the module is first installed? Can I use custom_url_rewrite_inbound(&$result, $path, $path_language) to do this? If so, could you please show me an example? Thanks, D

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• How i get a name without the last 4 charecter using C# substring??

  - by riad

  Dear all, Using this below code i get the name only first 4 character.But i need the name except the last 4 character. string fileName = Textbox1.text; string newName = fileName.Substring(0, 4); //ex: input abcdef.txt //output:abcd But i need output: abcdef pls help! thanks Riad

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• How to use a varying database?

  - by nimo

  I want to use a database which name is stored in a variable. How do I do this? I first thought this would work but it doesn't: exec('use '+@db) That will not change database context Suggestions anyone?

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• ActiveSync File Explorer alternative

  - by Andy White

  Is there an alternative to the ActiveSync "Explore" for looking at the file system of a Windows Mobile device? (This same thing can also be accessed from My Computer - Mobile Device). It would be nice if you could just navigate into the device and view or edit files without having to copy them back and forth from the PC. Why does it work this way in the first place? Is the Explore view sort of a "virtual" version of your phone's file system that cannot be edited directly?

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• Tree Menu? In JS?

  - by acidzombie24

  I need a tree menu. But instead of a listview where you expand/collapse i need a dropdown box with the list and when you click on a element i need the box to update (with the first entry being 'Back') so the menu stays in a neat little dialog. Does this menu have a name? Does anyone know where i can get code to do this?

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• trouble in using flalign (LaTeX)

  - by Jorge

  I am trying to put 3 equations with "=" signs aligned but also left aligned. I tried the following: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{flalign*} RPC &= A+B\tilde{f} +C x &\ A &= a+\eta &\ E &= cte & \end{flalign*} \end{document} With this I get the stuff in the left and the "=" signs aligned. However, I also need A (in the second equation) and E (in the third equation) to be aligned to the R (in the first one) Does anyone know how to get it? thanks

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• Jquery and Fancybox repeat Gallery

  - by ron

  HI everyone I hope you can help me, I have a problem with a requirement, I need to make a list of images that go to cycle. I have this website, here I have some business cards and I need the images to be repeated after the end of the first cycle and continue like a loop. here I leave the website, look that the list has a final. http://tradelinks.com.au/index.php?service=painters Thanks in Advance

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• Looking for a filtered dropdown list for ASP.NET.

  - by ProfK

  I have some DropDownList controls where the list is very large, so I would like to have a means for the user to filter the list, either based on other fields, e.g. region, or on the first letters typed in a textbox. How can I achieve this in ASP.NET? Is the an open source control out there that will help me?

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• faster strlen ?

  - by Jack

  Typical strlen() traverse from first character till it finds \0. This requires you to traverse each and every character. In algorithm sense, its O(N). Is there any faster way to do this where input is vaguely defined. Like: length would be less than 50, or length would be around 200 characters. I thought of lookup blocks and all but didn't get any optimization.

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• If innerHTML is evil, then what's a better way change the text of a link?

  - by sanj

  I know innerHTML is supposedly evil, but I think it's the simplest way to change link text. For example: <a id="mylink" href="">click me</a> In JS you can change the text with: document.getElementById("mylink").innerHTML = new_text; And in Prototype/jQuery: $("mylink").innerHTML = new_text; works fine. Otherwise you have to replace all of the child nodes first and then add a text node. Why bother?

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• How do I avoid multiple key up/down/press events when holding a key?

  - by Rammay

  I'm creating a web front end to control a small robot. Ajax calls will be made on a keydown, to start the robot, and keyup to stop it. My problem is that when a key is held down the keyup, keydown, and keypress events seem to cycle continually. Does anybody know of a way to only have keydown fire when the key is first pressed and keyup to fire when it has been released?

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• How do I use JDK 7 on Mac OSX?

  - by Yko

  OK. This is a newbie question but I can't figure it out... I would like to use the WatchService API as mentioned in this link: http://download.oracle.com/javase/tutorial/essential/io/notification.html After reading around, I found out that WatchService is part of the NIO class which is scheduled for JDK 7. So, it is in beta form. It's fine. http://jdk7.java.net/download.html has the JDK which I downloaded and extracted. I got a bunch of folders. I don't know what to do with them. Then, I read around some more and found that some nice group of people created JDK 7 as a binary so someone like me can install it easily. It is called Open JDK: http://code.google.com/p/openjdk-osx-build/ So, I downloaded the .dmg file and instal it. Then I open "Java Preference" and see that OpenJDK7 is available. So, now I feel that I can start trying out WatchService API. From the tutorial in the first link, the author gave a .java file to test it out first and make sure that it is running. Here is the link to the file: http://download.oracle.com/javase/tutorial/essential/io/examples/WatchDir.java So, I boot up Eclipse (actually I use STS) and create a new Java project and choose JaveSE-1.7 in the "use an execution environment JRE:". Under the src folder, I copy pasted the WatchDir.java file. And I still see tons of squiggly red lines. All the "import.java.nio.*" are all red and I cannot run it as a Java app. If you read this far, thanks a lot. So, now... What do I need to do? Thanks. EDIT: I actually did not pursue using Java 7 but there are a lot of interest in it and it seems like people keep answering this question. What should I do to make it more relevant to people who search for it? Let me know by PMing me. Thanks.

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• Easyslider not cooperating

  - by SiD

  First time I've used it. had it working but suddenly it's gone. It seems temperamental, sometimes works grand, a refresh then breaks it. It doesn't expand to the full height and screws up the positioning of the image and the corresponding copy. Any help much appreciated. See code here: http://www.bigfootwalk.com/route.html

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• Filtering constant noise out of a sound stream

  - by tur1ng

  After watching the first game of the FIFA worldcup I was very annoyed by the sound of the Vuvuzelas. A theoretical question came up about filtering that noise out of the sound stream. What algorithms are needed to remove such a "constant" noise and is it possible to keep the quality of other background sounds?

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• Rails error_messages helper

  - by Bob

  This is a very common piece of code <% form_for :blah... do |f| %> <%= f.error_messages %> First name: <%= f.text_field :first_name %><br /> .... <% end %> error_messages is a helper method but I am having a hard time finding the documentation for it, why is that?

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• Linq grouping question

  - by Mike C.

  I have the following objects in a collection: Transaction: Type = "Widget" Date = "3/1/2011" Name = "Foo" Transaction: Type = "Widget" Date = "3/4/2011" Name = "Bar" Transaction: Type = "Gadget" Date = "3/2/2011" Name = "Baz" Transaction: Type = "Gizmo" Date = "3/1/2011" Name = "Who" Transaction: Type = "Gizmo" Date = "3/2/2011" Name = "What" Transaction: Type = "Gizmo" Date = "3/6/2011" Name = "When" I want to end up with the following, grouped by Type. If there are multiple, return only the first one chronologically by date. Transaction: Type = "Widget" Date = "3/1/2011" Name = "Foo" Transaction: Type = "Gadget" Date = "3/2/2011" Name = "Baz" Transaction: Type = "Gizmo" Date = "3/1/2011" Name = "Who"

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• Why does typeof null misbehave in switch statements?

  - by user353366

  It is commonly known that typeof null returns "object". However, I have a piece of code that looks like this: switch(typeof null){ case "object": 1; default: 3; } This code returns 3. Why does "object" as returned by typeof null not cause the first branch of the case statement to be executed?

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• Is there a way to be notified when a property changes in a QObject?

  - by darkadept

  First off, I'm using Qt 4. Is there a way to be notified (signal, event, ?) when a property (dynamic or otherwise) changes on a QObject?

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• Intializing dictionary in c# 3.0

  - by Casey

  I'm having trouble with the following collections initalization: private Dictionary<string, string> mydictionary = new Dictionary<string, string>() { {"key", "value"} , {"key2", "value2"} , {"key3", "value3"} }; I keep getting various compiler errors about the syntax. From what I have googled this should be perfectly valid C# 3.0 code. The first error that pops up is: Error 102 ; expecte What am I doing wrong?

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• Lightweight Java reporting engine

  - by tuler

  I'm looking for a lightweight java reporting engine to be embedded in an applet application. My first option was Jasper Reports, but the jar is over 2Mb, a little too heavy (and too bloated) for my needs. I don't know if there is modular jasper distribution, with funcionalities split in several jars (like html rendering, pdf, excel, compilation, runtime, etc). I need to preview the report using Swing and print it. PDF export is a plus.

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• Add months to a date using jQuery

  - by hminaya

  I have a simple MVC form with the following elements: <%= Html.TextBox("FechaInicio") %> Which has the start date. <%= Html.TextBox("Meses") %> Which has the amount of months I want to add. I'd like to take the date that has been entered on the first textbox, add the amount of months that have been entered on the second textbox and get that value.

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• Why do custom styled Google Maps (v3) not support marker animation (pin drop)?

  - by Plum Pie

  For example, I cannot combine the concepts of this simple example: link text with the concepts of this example: link text, which uses the styled V3 api. In Chrome I get an error saying that: Uncaught TypeError: Cannot read property 'DROP' of undefined And it refers to this line of code: animation: google.maps.Animation.DROP, When I replace the javascript link reference to use the version of the API from the first example, the error goes away, but I lose the custom styling. I have not tried this in Firefox or IE. EDIT: Link to example: link text

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