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• Rails: periodically use HEAD to check for page changes

  - by Chris

  I have a Rails app implementing a game, so it's expected that a player will leave a browser open at the game page. When player Alan takes an action himself, I use AJAX requests to update the game page Alan is viewing to reflect the new state. However, when another player (Bob) takes an action, I don't have (or want) a mechanism to push the change…

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• Troubleshooting a COM+ application deadlock

  - by Chris Karcher

  I'm trying to troubleshoot a COM+ application that deadlocks intermittently. The last time it locked up, I was able to take a usermode dump of the dllhost process and analyze it using WinDbg. After inspecting all the threads and locks, it all boils down to a critical section owned by this thread: ChildEBP RetAddr Args to Child …

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• How can I make an AdvancedDataGrid re-display its labels when the results of the labelFunction chang

  - by Chris R

  I have an AdvancedDataGrid with a custom label function whose value can change based on other form status (specifically, there's a drop down to choose the time display format for some columns). Right now, I have this labelFunction: internal function formatColumnTime(item: Object, column: AdvancedDataGridColumn): String { var seconds:…

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• ASP with Crystal Report 9 hangs on .NET framework 3.5

  - by Chris Yang

  We have an ASP (not ASP.NET) application running on Windows 2003 server. One of the functions of the application is to generate reports using Crystal Report 9. It has been working without any problem with .NET Framework 2.0 and now it is required to install .NET Framework 3.5 SP1 on the server but after we installed the 3.5 SP1, every…

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• WEBrick::HTTPStatus::LengthRequired error when accessing create method in controller

  - by Chris Bisignani

  I have a very simple controller set up: class LibrariesController < ApplicationController ... def create @user.libraries << Library.new(params) @user.save render :json => "success!" end ... end Basically, whenever I try to access the create method of LibrariesController using HTTParty.post I get a…

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• Return value from nested function in Javascript

  - by Chris Armstrong

  I have a function that is set up as follows function mainFunction() { function subFunction() { var str = "foo"; return str; } } var test = mainFunction(); alert(test); To my logic, that alert should return 'foo', but instead it returns undefined. What am I doing wrong?

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• Android TextView's Background Not Moving When TextView.Padding Changes

  - by Chris

  I have a TextView that I created in the main.xml. In my app.java I am dynamically positioning that TextView based on where the user taps the screen. The problem I am having is that when I call myTextView.setPadding(100,100,0,0), it moves the actual Text of the TextView, but does not move the Colored Background of the TextView. …

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• Add a background color to text, but with space blank space between lines of paragraph

  - by Chris

  Hi, I was wondering if something was possible to do in CSS. Basically i want to recreate the text on the RHS of the image using html/css, but currently I'm getting the LHS of the image. The HTML: <div id="banner"> <div id="text"> <p>This is an example of what I have</p> </div>…

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• Automatically enabling an output filter in Apache module

  - by Chris

  I am developing a module for Apache which contains an output filter that I would like to always be invoked so that it can determine whether to process the request data or just pass the data along. Since I would like the module to be compatible with Apache 2.0 as well as 2.2, I do not want to use mod_filter. Ideally I would…

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• Getting browser to make an AJAX call ASAP, while page is still loading

  - by Chris

  I'm looking for tips on how to get the browser to kick off an AJAX call as soon as possible into processing a web page, ideally before the page is fully downloaded. Here's my approximate motivation: I have a web page that takes, say, 5 seconds to load. It calls a web service that takes, say, 10 seconds to load. If loading…

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• .NET EventHandlers - Generic or no?

  - by Chris Marasti-Georg

  Every time I start in deep in a C# project, I end up with lots of events that really just need to pass a single item. I stick with the EventHandler/EventArgs practice, but what I like to do is have something like: public delegate void EventHandler<T>(object src, EventArgs<T> args); public class…

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• Bazaar + CruiseControl.Net

  - by Chris Gill

  I want to setup CruiseControl.Net at my company. We currently have several .net solutions stored in a Bazaar repository and I want to use MSBuild to build each solution. This didn't seem too controversial, but I can't see an easy way of binding CruiseControl.Net to Bazaar. There seems to have been a plugin…

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• New line in GridView cell

  - by Chris

  I'm binding a GridView to an LINQ query. Some of the fields in the objects created by the LINQ statement are strings, and need to contain new lines. Apparently, GridView HTML-encodes everything in each cell, so I can't insert a <br /> to create a new line within a cell. How do I tell GridView not to…

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• WPF Choppy Animation

  - by Chris Dunaway

  WPF Windows-XP SP3 I'm having a problem with a simple WPF animation. I use the following Xaml code (in XamlPad and also in a WPF project): <Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:sys="clr-namespace:System;assembly=mscorlib"…

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• Javascript image copy protection

  - by Chris

  Is there a way to protect your images from being copied, specifically their URL's. So that if someone were to try right click the image and copy the URL I could pop up an embed box, or perhaps specify my own particular copy code so that I dictate the terms of the…

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• File Security (IP address access restrictions) in IIS7

  - by Chris Arnold

  I have a web service that contains 2 asmx files (public.asmx and private.asmx). On IIS6 I could go to the properties of private.asmx then, from the 'File Security' tab, deny all computers access except the IP address for localhost. In IIS7 I only seem to be able…

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• Bash: Terminate on Timeout/File Overflow while Executing Command

  - by Chris

  I'm writing a mock-grading script in bash. It's supposed to execute a C program which will give some output (which I redirect to a file.) I'm trying to (1) make it timeout after a certain duration and also (2) terminate if the output file reaches a certain file…

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• Need to Release UIWebView Delegate?

  - by Chris

  I have a UIWebView named wView. I want to use webViewDidFinishLoad: in my class, so I am setting the class as the delegate for wView by using this line: wView.delegate = self; Everything loads properly, but when I close the UIWebView, the App crashes. If I…

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• BackgroundWorker Not working in VSTO

  - by Chris

  I have a background worker. Before I invoke the worker I disable a button and make a gif visible. I then invoke the runworkerasync method and it runs fine until comleteion. On the 'RunWorkerCompleted()' I get a cross thread error. Any idea why? …

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• PHP MYSQLI query error?

  - by Chris Leah

  Hey This is my login script, using PHP5 and MYSQLi, I just had help spotting errors in my query, but still it will not let me login, even though the username and password are correct and in the database, it just keeps returning the error: your username…

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• Just-in-time invocation of Facebook login window from UIWebView

  - by Chris Garrett

  I have an app that presents a UIWebView pointing to my own server. I have a Facebook Like button on some pages inside the UIWebView. I have it working now, but the login screen is way too big for the phone screen. I would like to present a nicer…

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• Legal uses of setjmp and GCC

  - by Chris Lutz

  Using GCC (4.0 for me), is this legal: if(__builtin_expect(setjmp(buf) != 0, 1)) { // handle error } else { // do action } I found a discussion saying it caused a problem for GCC back in 2003, but I would imagine that they would…

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• Random value from Flags enum

  - by Chris Porter

  Say I have a function that accepts an enum decorated with the Flags attribute. If the value of the enum is a combination of more than one of the enum elements how can I extract one of those elements at random? I have the following but it seems…

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• Anyone ever been able to build a website with a moving video as a background?

  - by Chris J. Lee

  Trying to build a website where the background of the site is a video and then there would be an actual html page laid on top of it.

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• Using ELMAH and URLRewritingNet Together

  - by Chris Laythorpe

  I have ELMAH setup on my production server and it has done a fantastic job of letting me know about any niggles - as well as any creative SQL injection! I've decided to introduce URl Rewriting and went for http://www.urlrewriting.net/ in the…

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