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• How do I go about getting the Ajax Queue plugin working in jQuery 1.3?

  - by jonyamo

  I have an app that sends multiple Ajax requests simultaneously. I was originally running into race conditions until I discovered the jQuery Ajax Queue plugin, which works great with jQuery 1.2, but fails with jQuery 1.3. There are actually two different versions of the plugin; I am currently using this one which is the same as the first but just adds a bit more functionality. Anyway, I am using Firebug on Firefox 3.0.10 and when I run my code I don't receive any explicit errors, the call is just never returned. I could obviously continue using v1.2 but would really like to learn why this plugin fails with the latest release and what I can do to get it working. Thanks in advance.

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• Conditional Statements - If Then vs. Select Case

  - by cloyd800

  I'm a bit new to programming, and based on the few sources I've read both on the web and the books I'm learning to teach myself they are able to define what IF THEN and SELECT CASE conditional statements are, but have failed to give a comparison as to why I would use one over the other and what best practices decide this. If I'm understanding these conditional statements correctly, then both are based on a set of conditions with an outcome based around meeting these conditions, and if no conditions are met then an alternative outcome can be defined. I'm having trouble in understanding when I would use an IF THEN statement, and when I'd use a SELECT CASE statement, and what best practices are used to define this decision. Any insight on this would be greatly appreciated!

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• file names based on file content

  - by Mark

  So iow, some algorithm to generate a unique, reasonable length filename based on binary file content. Two files that have the same binary content should have the same name. Obviously there would be limits to this, as presumably you couldn't have unique reasonable length filenames for each of a large set of large files only differing at a handful of bit positions. But presumably there is some heuristic, best approximation to this that for example exploits known attributes of typical image files. If I had the name of some algorithm that does this I can google it and find other approaches as well.

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• Is there a tool that automatically saves incremental changes to files while coding?

  - by Bob.

  One of my favorite features of Google docs is the fact that it's constantly automatically saving versions of my document as I work. This means that even if I forget to save at a certain point before making a critical change there's a good chance that a save point has been created automatically. At the very least, I can return the document to a state prior to the mistaken change and continue working from that point. Is there a tool with an equivalent feature for a Ruby coder running on Mac OS (or UNIX)? For example, a tool that will do an automatic Git check-in every couple of minutes to my local repository for the files I'm working on. Maybe I'm paranoid, but this small bit of insurance could put my mind at ease during my day-to-day work.

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• jquery autocomplete get selected item text

  - by rlee923

  I am wondering how to grab the selected item's text value on jquery autocomplete. I have initialised jquery as following : $(document).ready(function (){ $("input#autocomplete").autocomplete({ source: postcodelist, select: function (event, ui) { AutoCompleteSelectHandler(event, ui) } }); }); And I have created a function function AutoCompleteSelectHandler(event, ui) { }. Inside this function I want to some extra handling to feed data into correct textboxes but I can't figure out how to grab the text value of the selected item. I did google a bit and tried examples but I can't seem to get it working. Any help will be much appreciated. Thanks a lot advance.

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• Basic CSS: having unordered list extend beyond container div?

  - by Tony

  Hi. It's been a bit since I've gotten really into CSS work, I'm trying to make a simple layout with a menubar. The idea is to have a container holding everything in the center of the screen and have a menubar (unordered inline list) that runs the full length of the screen but the list items to be contained in the container. See this pic for a visual example ps. I know this isn't true "programming", but this seemed like the most appropriate place to post this question. Let me know if there's a better /r/ for this to go.

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• Why isn't div centering?

  - by user2898276

  I'm trying to centre a logo in the middle of the browser. I have this so far... <script type="text/javascript"> $(document).ready(function(){ $(window).resize(function(){ $('#theLogo').css({ position:'absolute', left: ($(window).width() - $('#theLogo').outerWidth())/2, top: ($(window).height() - $('#theLogo').outerHeight())/2 }); }); $(window).resize(); }); HTML <div id="theLogo"> <section id="responsiveLogo" class="logo">September</section> </div> I'm trying to centre this bit: <section id="responsiveLogo" class="logo">September</section> Live version here

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• Looking for Haskell `group` alternative in F#

  - by Heather

  Haskell group descripted there: http://www.haskell.org/ghc/docs/latest/html/libraries/base/Data-List.html#v:group example : group "Mississippi" = ["M","i","ss","i","ss","i","pp","i"] Is there simple F# way of doing it? I can implement something alike let rec sameCounter (data : list<float>) el same (ss : list<float * int>) = if data.Length > (el + 1) then if data.[el] = data.[el + 1] then sameCounter data (el + 1) <| same + 1 <| ss else if same > 0 then sameCounter data (el + 1) <| 0 <| (data.[el], same) :: ss else sameCounter data (el + 1) <| 0 <| ss else ss let group d = sameCounter d 0 0 [] but it's a bit ugly way I think, is there better variant?

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• Nested BooleanQuery?

  - by KailZhang

  I'm using a BooleanQuery to combine several queries. I find that if I add a BooleanQuery to the BooleanQuery, then no result is returned. The added BooleanQuery is a MUST_NOT one, like -city_id:100. But as lucene's spec says, BooleanQuery could be nested, which I think means it's okay to add such BooleanQuery. Now I have to get all clauses from the BooleanQuery to be added, and then add them to the container BooleanQuery one by one. I'm a bit confused. Anybody could help? Thank you very much!

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• How can I observe the style on an element during mouse-over?

  - by DaveDev

  We supply micro-site content to a client. They supply us with a HTML wrapper and we inject our content into it. I'm trying to debug an issue where our style sheet appears to be interfering with the style in their wrapper. Normally I'd use firebug or IE Developer Toolbar to select the element and I can see which styles are being applied, which are being overridden and where they are coming from. But this particular problem only exists when I hover the mouse over a link. Specifically, the link shrinks a little bit. Is there anything that I can use to see what the browser is doing with the styles when I hover the mouse over the link?

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• Bind to a collection's view and just call ToString()

  - by womp

  I'm binding a GridView to a collection of objects that look like this: public class Transaction { public string PersonName { get; set; } public DateTime TransactionDate { get; set; } public MoneyCollection TransactedMoney { get; set;} } MoneyCollection simply inherits from ObservableCollection<T>, and is a collection of MyMoney type object. In my GridView, I just want to bind a column to the MoneyCollection's ToString() method. However, binding it directly to the TransactedMoney property makes every entry display the text "(Collection)", and the ToString() method is never called. I understand that it is binding to the collection's default view. So my question is - how can I make it bind to the collection in such a way that it calls the ToString() method on it? This is my first WPF project, so I know this might be a bit noobish, but pointers would be very welcome.

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• What's the difference between FireBug's conole.log() and console.debug() ?

  - by 6bytes

  A very simple code to illustrate the difference. var x = [0, 3, 1, 2]; console.debug('debug', x); console.log('log', x); // above display the same result x.splice(1, 2); // below display kind of a different result console.debug('debug', x); console.log('log', x); The javascript value is exactly the same but console.log() displays it a bit differently than before applying splice() method. Because of this I lost quite a few hours as I thought splice is acting funny making my array multidimensional or something. I just want to know why does this work like that. Does anyone know? :)

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• Sharing folders with VirtualBox, Win7 Host and Ubuntu 9.10 Guest [closed]

  - by user225890

  I have a development setup from this tutorial: http://www.sitepoint.com/blogs/2009/10/27/build-your-own-dev-server-with-virtualbox/ But what I can't figure out is how to share a folder on my Ubuntu virtualized machine with the host Win7. I want to use a Windows text editor to edit code that's on my Ubuntu server. I've tried using the Shared Folders setting, adding "/var/www" but it says that the path is not absolute. When I click on "other", it only allows me to browse folders on my Win7 host. Both the host and guest are 64-bit OS. Thanks in advance!

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• How can I clone a .NET solution?

  - by tobinharris

  Starting new .NET projects always involves a bit of work. You have to create the solution, add projects for different tiers (Domain, DAL, Web, Test), set up references, solution structure, copy javascript files, css templates and master pages etc etc. What I'd like is an easy way of cloning any given solution. If you use copy/paste, the problem is that you need to then go through renaming namespaces, assembly names, solution names, GUIDs etc. Is there a way of automating this? Something like this would be great: solutionclone.exe --solution=c:\code\abc\template.sln --to=c:\code\xyz --newname=MySolution I'm aware that Visual Studio has project templates, but I've not seen solution templates. Ideas welcome, thanks in advance folks!

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• MySql database design for a quiz

  - by Mark

  I'm making an online quiz with php and mysql and need a bit of help deciding how to design the database for optimal insert of questions/answers and to select questions for the quiz. The table will hold 80 questions each with 4 possible options plus the correct answer. When retrieving the questions and options from the database I will randomly select 25 questions and their options. Is it better to make a single column for all questions, options, and correct answers? For example: ID | Q | OPT1 | OPT2 | OPT3 | OPT4 | ANS Or would it be better to make a column for each individual question, option, and correct answer? For example: Q1 | Q1_OPT1 | Q1_OPT2 | Q1_OPT3 | Q1_OPT5 | Q1_ANS | Q2 | Q2_OPT1 | Q2_OPT2...

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• Catching / Redirecting 404's (ASP.NET)

  - by maxp

  Ive noticed that when I request a page in ASP.NET (webforms) that does not exist, the 'StaticFile' handler deals with the error notification. Id like to be a bit more helpful in these situations. What is the correct way for me to intercept this 404, and as a result, run some code to redirect the user? Two ways Ive thought of doing which I currently don't really like are: 1 - Create a module that basically does a if (!file.exists($url){redirect to $correctedurl}) 2 - Modify the error.aspx.cs(or the default error page) to do something similar (yuck!)

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• Where can I find an array of the Unicode code points for a particular block?

  - by gitparade

  At the moment, I'm writing these arrays by hand. For example, the Miscellaneous Mathematical Symbols-A block has an entry in hash like this: my %symbols = ( ... miscellaneous_mathematical_symbols_a => [(0x27C0..0x27CA), 0x27CC, (0x27D0..0x27EF)], ... ) The simpler, 'continuous' array miscellaneous_mathematical_symbols_a => [0x27C0..0x27EF] doesn't work because Unicode blocks have holes in them. For example, there's nothing at 0x27CB. Take a look at the code chart [PDF]. Writing these arrays by hand is tedious, error-prone and a bit fun. And I get the feeling that someone has already tackled this in Perl!

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• Stringly typed values table in sql, is there a better way to do this? (we're using MSSQL)

  - by Jason Hernandez

  We have have a table layout with property names in one table, and values in a second table, and items in a third. (Yes, we're re-implementing tables in SQL.) We join all three to get a value of a property for a specific item. Unfortunately the values can have multiple data types double, varchar, bit, etc. Currently the consensus is to stringly type all the values and store the type name in the column next to the value. tblValues DataTypeName nvarchar Is there a better, cleaner way to do this?

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• Functional equivalent of if (p(f(a), f(b)) a else b

  - by oxbow_lakes

  I'm guessing that there must be a better functional way of expressing the following: def foo(i: Any) : Int if (foo(a) < foo(b)) a else b So in this example f == foo and p == _ < _. There's bound to be some masterful cleverness in scalaz for this! I can see that using BooleanW I can write: p(f(a), f(b)).option(a).getOrElse(b) But I was sure that I would be able to write some code which only referred to a and b once. If this exists it must be on some combination of Function1W and something else but scalaz is a bit of a mystery to me! EDIT: I guess what I'm asking here is not "how do I write this?" but "What is the correct name and signature for such a function and does it have anything to do with FP stuff I do not yet understand like Kleisli, Comonad etc?"

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• Grouped table with image in first row (and section), the remaining ones having text with different l

  - by Structurer

  Hi I have a grouped table with two sections where I display text with different length and therefore cell height. I have solved the problem with the different length/height with constrainedToSize in cellForRowAtIndexPath. Now I want to add a section with one single row in which I want to show a picture. How should I best implement that? (still a bit of a beginner with the Objective C) I would guess that I would have to create an UIImageView and somehow link that to the cell, but my biggest concern is how do I do with the dequeueReusableCellWithIdentifier now that I will have two different type of cells? Appreciate any advice that will help me save time from trial and error!

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• Is object clearing/array deallocation really necessary in VB6/VBA (Pros/Cons?)

  - by Oorang

  Hello, A lot of what I have learned about VB I learned from using Static Code Analysis (Particularly Aivosto's Project Analyzer). And one one of things it checks for is whether or not you cleared all objects and arrays. I used to just do this blindly because PA said so. But now that I know a little bit more about the way VB releases resources, it seems to me that these things should be happening automatically. Is this a legacy feature from pre VB6, or is there a reason why you should explicitly set objects back to nothing and use Erase on arrays?

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• Multiply with negative integer just by shifting.

  - by stex

  Hi, I'm trying to find a way to multiply an integer value with negative value just with bit shifting. Usually I do this by shifting with the power of 2 which is closest to my factor and just adding / subtracting the rest, e.g. x * 7 = ((x << 3) - x) Let's say I'd want to calculate x * -112. The only way I can imagine is -((x << 7) - (x << 4), so to calculate x * 112 and negate it afterwards. Is there a "prettier" way to do this?

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• Keeping iPhone App private after AppStore approval for beta testing.

  - by Stack

  I have messed around with AD-HOC distribution quite a bit and got it working too. The problem I am facing is all the people who I want to use as beta testers are "normal people" who never even sync their iPhone to iTunes on a computer. So, you can understand how technically challenged these people are, which is fine with me because that is the audience I want to use for testing. All these guys can do for me is if I can give them an AppStore link they will download it on their iPhone and test it for me. So, basically AD-HOC distribution (UDIDs, mobileprovision file and all that crap) is out of question for me. My Question is after AppStore approves my app, is there a way for me to be under the radar so that normal public can not download the app until I am ready. From past experience I know that the moment you put an app out there, in first week you get 100s of downloads and I dont want that to happen until my beta testing is finished.

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• Customizing Document library web part

  - by Sushant

  Hi, I am developing a website in Sharepoint 2007. I came across a bit tricky problem. I have a document library web part in a web part page. I am using the summary toolbar view. I dont want users to add new documents on first screeen where it shows folders. I want them to open the folders and add documents there. I cannot do a No toolbar view because it will remove the link from every subsequent page. Has anyone implemented something like this. Please help.

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• [C++] which is better, throw an exception or return nonzero value?

  - by xis19

  While you are doing C++ programming, you have two choices of reporting an error. I suppose many teachers would suggest you throw an exception, which is derived from std::exception. Another way, which might be more "C" style, is to return a non-zero value, as zero is "ERROR_SUCCESS". Definitively, return an exception can provide much more information of the error and recovery; while the code will bloat a little bit, and making exception-safe in your mind is a little difficult for me, at least. Other way like returning something else, will make reporting an error much easier; the defect is that managing recovery will be a possibly big problem. So folks, as good programmers, which would be your preference, not considering your boss' opinion? For me, I would like to return some nonzero values.

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