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  • Ajax request gets to server but page doesn't update - Rails, jQuery

    - by Jesse
    So I have a scenario where my jQuery ajax request is hitting the server, but the page won't update. I'm stumped... Here's the ajax request: $.ajax({ type: 'GET', url: '/jsrender', data: "id=" + $.fragment().nav.replace("_link", "") }); Watching the rails logs, I get the following: Processing ProductsController#jsrender (for 127.0.0.1 at 2010-03-17 23:07:35) [GET] Parameters: {"action"=>"jsrender", "id"=>"products", "controller"=>"products"} ... Rendering products/jsrender.rjs Completed in 651ms (View: 608, DB: 17) | 200 OK [http://localhost/jsrender?id=products] So, it seems apparent to me that the ajax request is getting to the server. The code in the jsrender method is being executed, but the code in the jsrender.rjs doesn't fire. Here's the method, jsrender: def jsrender @currentview = "shared/#{params[:id]}" respond_to do |format| format.js {render :template => 'products/jsrender.rjs'} end end For the sake of argument, the code in jsrender.rjs is: page<<"alert('this works!');" Why is this? I see in the params that there is no authenticity_token, but I have tried passing an authenticity_token as well with the same result. Thanks in advance.

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  • Haskell lazy I/O and closing files

    - by Jesse
    I've written a small Haskell program to print the MD5 checksums of all files in the current directory (searched recursively). Basically a Haskell version of md5deep. All is fine and dandy except if the current directory has a very large number of files, in which case I get an error like: <program>: <currentFile>: openBinaryFile: resource exhausted (Too many open files) It seems Haskell's laziness is causing it not to close files, even after its corresponding line of output has been completed. The relevant code is below. The function of interest is getList. import qualified Data.ByteString.Lazy as BS main :: IO () main = putStr . unlines =<< getList "." getList :: FilePath -> IO [String] getList p = let getFileLine path = liftM (\c -> (hex $ hash $ BS.unpack c) ++ " " ++ path) (BS.readFile path) in mapM getFileLine =<< getRecursiveContents p hex :: [Word8] -> String hex = concatMap (\x -> printf "%0.2x" (toInteger x)) getRecursiveContents :: FilePath -> IO [FilePath] -- ^ Just gets the paths to all the files in the given directory. Are there any ideas on how I could solve this problem? The entire program is available here: http://haskell.pastebin.com/PAZm0Dcb

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  • Distinguish between single and double click events in Qt

    - by Jesse
    I have a QAbstractItemView that needs to react to single and double click events. The actions are different depending on whether it was single clicked or double clicked. The problem that is occurring is that the single click event is received prior to the double click event. Is there a recommended way/best practice for distinguishing between the two? I don't want to perform the single click action when the user has actually double clicked. I am using Qt 4.6

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  • rails code within javascript

    - by Jesse
    I am trying to use some rails code withing a javascript and need to have that rails code be dynamically changed. Here's the line of code: $(this).replaceWith("<%= escape_javascript(render(:partial => 'shared/products')) %>"); The 'shared/products' is the part I want to change based off information passed earlier in the javascript. How do I insert a value from javascript so that instead of 'shared/products' the products portion can be a variable? Hope this makes sense. I'm not the most experienced jQuery/javascript programmer, so any help is very much appreciated. Thanks in advance!

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  • How to add an extra plist property using CMake?

    - by Jesse Beder
    I'm trying to add the item <key>UIStatusBarHidden</key><true/> to my plist that's auto-generated by CMake. For certain keys, it appears there are pre-defined ways to add an item; for example: set(MACOSX_BUNDLE_ICON_FILE ${ICON}) But I can't find a way to add an arbitrary property. I tried using the MACOSX_BUNDLE_INFO_PLIST target property as follows: I'd like the resulting plist to be identical to the old one, except with the new property I want, so I just copied the auto-generated plist and set that as my template. But the plist uses some Xcode variables, which also look like ${foo}, and CMake grumbles about this: Syntax error in cmake code when parsing string <string>com.bedaire.${PRODUCT_NAME:identifier}</string> syntax error, unexpected cal_SYMBOL, expecting } (47) Policy CMP0010 is not set: Bad variable reference syntax is an error. Run "cmake --help-policy CMP0010" for policy details. Use the cmake_policy command to set the policy and suppress this warning. This warning is for project developers. Use -Wno-dev to suppress it. In any case, I'm not even sure that this is the right thing to do. I can't find a good example or any good documentation about this. Ideally, I'd just let CMake generate everything as before, and just add a single extra line. What can I do?

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  • How to make CSS float left not bend around when browser width is shrunk

    - by jesse
    I have 2 div boxes. It's all working fine but when the browser is shrunk to less than 800 pixels or so, the second div moves underneath the first div. How can I force it to always stay to the right of it? #testbox1 { background-color: #0000ff; min-width: 300px; width: 30%; height: 200px; position: relative; float: left; } #testbox2 { background-color: #00ffff; width: 500px; height: 200px; position: relative; float: left; }

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  • Loading and removing images with DOM, Javascript

    - by jesse
    I'm new to DOM and I'm having trouble removing multiple images that I loaded this loads 7 images (1.jpg, 2.jpg, etc..) function loadImages() { for (var i = 1; i < 8; i++ ) { var img = document.createElement("img"); img.src = "images/"+i+".jpg"; var idName = "img"+i+""; document.getElementById(idName).appendChild(img); } } this should remove all of them, but doesn't.. I think it breaks at the removeChild line. function removeImages() { for (var i = 1; i < 8; i++ ) { var idName = "img"+i+""; var d = document.getElementById(idName); d.removeChild(document.getElementById(img)); } } I think I'm doing something fundamentally wrong, because I don't fully understand how this works...

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  • UITableViewCell with 'ball' like calendar App

    - by Stuart Tevendale
    in the iPhone Calendar app, the view to select the calendar for a particular event has a coloured circle next to the calendar name, drawn with a graduated/3D effect of a ball. Does anyone have any sample code for how this is drawn - I can draw a solid circle in the UITableViewCell, but I'm not sure how to get the 3D effect. Thanks.

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  • VBA: How to trigger a worksheet event function by an automatic cell change trough a link?

    - by Jesse
    Hi, My problem is the following: The function below triggers an "if then function" when i manually change the value in cell D9. What should I do to get it to work with an automatic value change of cell D9 trough a link. In other words if i where to link cell D9 to cell A1 and change the value of A1 can i still make the function below work? Thanks in advance Private Sub Worksheet_Change(ByVal Target As range) If Target.Address = "$D$9" Then If range("C12") = 0 Then Rows("12:12").Select Selection.RowHeight = 0 Else: Rows("12:12").Select Selection.RowHeight = 15 End If End Sub

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  • jquery manipulate a tags with .css()

    - by jesse
    I need to change the font color of a div with the id name "nav" to white. I did: $("#nav").css("color","white"); This works for all the text that isn't wrapped in < a tags but I need those changed too. I tried adding: $("a").css("color","white"); But that doesn't work. I also tried: var changeAColor = document.getElementsByTagName("a") $(changeAColor).css("color","white"); Any ideas appreciated.

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  • Communication via internet in Java

    - by Stuart
    What I mean is like servers on video games. You can run an application and it will set up a server on your computer with an IP and a port. For example, how would you make an application where one host application sets up a thing where it has an IP and a port, and another computer that has access to the internet as well can type in the IP and port and it would be able to communicate with the host? I mean simple communication, like sending a boolean or String. And would there be any security problems that would be needed to fix?

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  • Deleting While Iterating in Ruby?

    - by Jesse J
    I'm iterating over a very large set of strings, which iterates over a smaller set of strings. Due to the size, this method takes a while to do, so to speed it up, I'm trying to delete one of the strings from the smaller set that no longer needs to be used. Below is my current code: Ms::Fasta.foreach(@database) do |entry| all.each do |set| if entry.header[1..40].include? set[1] + "|" startVal = entry.sequence.scan_i(set[0])[0] if startVal != nil @locations << [set[0], set[1], startVal, startVal + set[1].length] all.delete(set) end end end end The problem I face is that the easy way, array.delete(string), effectively adds a break statement to the inner loop, which messes up the results. The only way I know how to fix this is to do this: Ms::Fasta.foreach(@database) do |entry| i = 0 while i < all.length set = all[i] if entry.header[1..40].include? set[1] + "|" startVal = entry.sequence.scan_i(set[0])[0] if startVal != nil @locations << [set[0], set[1], startVal, startVal + set[1].length] all.delete_at(i) i -= 1 end end i += 1 end end This feels kind of sloppy to me. Is there a better way to do this? Thanks.

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  • Why do I need an intermediate conversion to go from struct to decimal, but not struct to int?

    - by Jesse McGrew
    I have a struct like this, with an explicit conversion to float: struct TwFix32 { public static explicit operator float(TwFix32 x) { ... } } I can convert a TwFix32 to int with a single explicit cast: (int)fix32 But to convert it to decimal, I have to use two casts: (decimal)(float)fix32 There is no implicit conversion from float to either int or decimal. Why does the compiler let me omit the intermediate cast to float when I'm going to int, but not when I'm going to decimal?

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  • Java application if/case recommendation

    - by Jesse
    I am writing an application for a Java course. I am a complete beginner and am just going off material I have learned from the course and from the web. The application is exhibiting some behavior and I am not sure what is causing it. The application is GUI based and does calculations on user input. For the action listener section, I have a set of If statements such as: "if this button do this if this button do this" All in a row like that. It seems as if the application is running ALL the if statements instead of running the one that corresponds with the button pressed. Would I be better off using a case/switch structure for this sort of thing? I can post my code if necessary, I am new around this site and am not sure if that thing is acceptable.

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  • Problems Installing Eclipse and Ruby Plugin

    - by Jesse J
    I installed Eclipse on my Ubuntu machine and then the Ruby Development Tools (RDT), but it would crash when I try to alter certain features, like having line numbers, how far back to have history, and the code coloring scheme didn't work fully. I decided to try to uninstall Eclipse by doing sudo aptitude remove Eclipse and then sudo aptitude install eclipse but instead it installed it back with the broken Ruby plugin. I also tried aptitude purge but that didn't help either. How can I freshly reinstall Eclipse and get a properly working Ruby plugin?

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  • Handling user input in C

    - by Stuart
    In C, I am writing a program which is taking in user input than comparing it to see which output it should use. I am finding it problomatic and was wondering if someone could give me a hand. So far I have: while(cmd[0] != EOF){ fgets(cmd, sizeof(cmd), stdin); /** Takes in user input and stores it in cmd **/ if(cmd[0] == '\n') printf("%s> ", cwd); else if(strcmp(cmd, "ls") == 0) printf("I will list everything"); } Any ideas? Basically it is just ignoring any user input when there is some. P.S. The variable cwd is just a string.

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  • How can I get the edit control in a cell of a DataGridView to validate itself?

    - by Stuart Helwig
    It appears that the only way to capture the keypress events within a cell of a DataGridView control, in order to validate user input as they type, is to us the DataGridView controls OnEditControlShowing event, hook up a method to the edit control's (e.Control) keypress event and do some validation. My problem is that I've built a heap of custom DataGridView column classes, with their own custom cell types. These cells have their own custom edit controls (things like DateTimePickers, and Numeric or Currency textboxes.) I want to do some numeric validation for those cells that have Numeric of Currency Textboxes as their edit controls but not all the other cell types. How can I determine, within the DataGridView's "OnEditControlShowing" override, whether or not a particular edit control needs some numeric validation? (In the meantime I've restorted to setting the Tag property of my custom edit controls to a known value and any Edit Controls I find in the OnEditControlShowing override, I hook to my validation routine - I don't like that much!)

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  • Best way to format a query string in an asp.net mvc url?

    - by Stuart
    I've noticed that if you sent a query string routevalue through asp.net mvc you end up with all whitespaces urlencoded into "%20". What is the best way of overriding this formatting as I would like whitespace to be converted into the "+" sign? I was thinking of perhaps using a custom Route object or a class that derives from IRouteHandler but would appreciate any advice you might have.

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  • How do I specify a null relation in SQLAlchemy?

    - by Jesse
    Not sure what the correct title for this question should be. I have the following schema: Matters have a one-many relationship to WorkItems. WorkItems have a one-one (or one-zero) relationship to LineItems. I am trying to create the following relation between Matters and WorkItems Matter.unbilled_work_items = orm.relation(WorkItem, primaryjoin = (Matter.id == WorkItem.matter_id) and (WorkItem.line_item_id == None), foreign_keys = [WorkItem.matter_id, WorkItem.line_item_id], viewonly=True ) This throws: AttributeError: '_Null' object has no attribute 'table' That seems to be saying that the second clause in the primaryjoin returns an object of type _Null, but it seems to be expecting something with a "table" attribute. This seems like it should be pretty straightforward to me, am I missing something obvious?

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  • xmldocument and nested schemas

    - by Stuart
    Using c# and .net 3.5 I'm trying to validate an xml document against a schema that has includes. The schemas and there includes are as below Schema1.xsd - include another.xsd another.xsd - include base.xsd When i try to add the Schema1.xsd to the XmlDocument i get the following error. Type 'YesNoType' is not declared or is not a simple type. I believe i'm getting this error because the base.xsd file is not being included when i load the Schema1.xsd schema. I'm trying to use the XmlSchemaSet class and I'm setting the XmlResolver uri to the location of the schemas. NOTE : All schemas live under the same directory E:\Dev\Main\XmlSchemas Here is the code string schemaPath = "E:\\Dev\\Main\\XmlSchemas"; XmlDocument xmlDocSchema = new XmlDocument(); XmlSchemaSet s = new XmlSchemaSet(); XmlUrlResolver resolver = new XmlUrlResolver(); Uri baseUri = new Uri(schemaPath); resolver.ResolveUri(null, schemaPath); s.XmlResolver = resolver; s.Add(null, XmlReader.Create(new System.IO.StreamReader(schemaPath + "\\Schema1.xsd"), new XmlReaderSettings { ValidationType = ValidationType.Schema, XmlResolver = resolver }, new Uri(schemaPath).ToString())); xmlDocSchema.Schemas.Add(s); ValidationEventHandler valEventHandler = new ValidationEventHandler (ValidateNinoDobEvent); try { xmlDocSchema.LoadXml(xml); xmlDocSchema.Validate(valEventHandler); } catch (XmlSchemaValidationException xmlValidationError) { // need to interogate the Validation Exception, for possible further // processing. string message = xmlValidationError.Message; return false; } Can anyone point me in the right direction regarding validating an xmldocument against a schema with nested includes.

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  • C++ vector of char array

    - by Stuart
    I am trying to write a program that has a vector of char arrays and am have some problems. char test [] = { 'a', 'b', 'c', 'd', 'e' }; vector<char[]> v; v.push_back(test); Sorry this has to be a char array because I need to be able to generate lists of chars as I am trying to get an output something like. a a a b a c a d a e b a b c Can anyone point me in the right direction? Thanks

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  • Outlook AppointmentItem - How do I programmatically add RTF to its Body?

    - by Stuart Harris
    I would like to set the Body of an AppointmentItem to a string of RTF that contains an embedded image. Setting Microsoft.Office.Interop.Outlook.AppointmentItem.Body results in the RTF appearing as-is in the appointment. I have tried using Redemption which wraps the appointment and exposes an RTFBody property, but the RTF formatting (including the image) is lost. In this example (which doesn't have an embedded image) the RTF appears in the document as-is. Has anyone managed to do this? var appointment = (AppointmentItem)app.CreateItem(OlItemType.olAppointmentItem); appointment.Subject = "test subject"; appointment.Start = DateTime.Now; appointment.End = DateTime.Now.AddHours(1); appointment.Body = @"{\rtf1\ansi\deff0{\fonttbl{\f0 Arial;}}{\colortbl ;\red0\green0\blue255;}\pard\cf1\f0\fs24 Test}"; appointment.Save();

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  • Querystring formatting in asp.net MVC 2

    - by Stuart
    Seems like a straitforward question but I can't quite figure it out myself... I have an actionlink like so Html.ActionLink( "Test", "test", new { q = "search+twitter" } ) This produces a url string as follows http://myserver/test?q=search%2Btwitter But i would like to preserve the plus sign (which i assume is being UrlPathEncoded) so that I get the following url http://myserver/test?q=search+twitter Is there an easy way to do this whilst still using Html.ActionLink ?

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  • Process data BEFORE a 301 Redirect?

    - by Jesse
    So, I've been working on a PHP link shortener (I know, just what the world needs). Basically when the page loads, php determines where it needs to go and sends a 301 Header to redirect the browser, like so... Header( "HTTP/1.1 301 Moved Permanently" ); header("Location: http://newsite.com"; Now, I'm trying to add some tracking to my redirects and insert some custom analytics data into a MySQL table before the redirect happen. It works perfectly if I don't specify the a redirect type and just use: header("Location: http://newsite.com"; But, of course as soon as you add in the 301 header, nothing else gets processed. Actually, on the first request, it sends the data to MySQL, but on any subsequent requests there's no communication with the database. I assume it's a browser caching issue, once it's seen the 301 it decides they're no reason to parse anything on future requests. But, does anyone know if there's any way to get around this? I'd really like to keep it as a 301 for SEO purposes (I believe if you don't specify it sends a 404 by default?). I thought about using .htaccess to prepend a file to the page that will do the MySQL work, but with the 301, wouldn't that just get ignored as well? Anyway, I'm not sure if there's any solution other than using a different type of redirect, but I'm ready to give up just yet. So, any suggestions would be much appreciated. Thanks!

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  • Checking if an element is visible in Chrome using Selenium Remote WebDriver

    - by Stuart
    Is there a cross browser solution to check if an element is visible using WebDriver? The solution for IE and firefox is to cast the object to a RenderedRemoteWebElement and then call the property Displayed. I'm using the following methods to return if a element is visible: /// <summary> /// Check if the control is visible. /// </summary> public bool IsVisible() { IWebElement control = mSelenium.FindElement(mFindBy); return ((RenderedRemoteWebElement)control).Displayed; } The problem is when I run this using Chrome, I get an exception when casting to type RenderedRemoteWebElement, this is not really the problem as I can catch this, but I need to a solution to check if an element is visible in chrome. Thanks

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