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Where to start with the development of first database driven Web App (long question)?

- by Ryan

Hi all, I've decided to develop a database driven web app, but I'm not sure where to start. The end goal of the project is three-fold: 1) to learn new technologies and practices, 2) deliver an unsolicited demo to management that would show how information that the company stores as office documents spread across a cumbersome network folder…

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How to store an arbitrarily long int to a binary file in python?

- by Mark

How can I store and retrieve the number 2**10000 in a binary file in python without converting it to a string? Can it be stored as 10,000 bits?

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How do I tell gdb how long my zero-length array is?

- by Joe

Slightly oxymoronic title! Bonus points for Xcode answer but it's a gdb question. If I have a standard, statically sized array gdb will print all its elements [and Xcode will let me browse through it] but if I have a zero length array, it won't, because it doesn't know. Obviously I can print the array indexes one by one, but I'd like a dump…

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using same ids for many tags?

- by gaurav rathor

here is the example code that i was testing and i got confused that every one says that we can use or we should use only one time per id but i have testes using using it multiple times but its giving me the correct output. so what should i do. it is kinda working same like class for me in this example code: <html> <head>…

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How to display a very long page like dzone.com?

- by user360529

Hi, If you ever visit dzone.com you'll notice that all the posts appear on 1 page only. When we scroll that page down, older posts will be added to the end of the page (and maybe some posts at the beginning of the page but outside the view port will be removed). My questions are: - how to know if the user scrolls down/up with…

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Web pages that a long time to load keep on reloading, just on vista on my work n/w...

- by Ralpharama

I have a curious problem at work which I've been struggling with since the advent of Windows Vista. We send our own email newsletter out to 40,000+ people once a week. The sending code has been in place for years, it's in classic ASP/VBscript called through a browser and simply loops through each email address, sending it to…

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How do you make long SQL invoked from other code readable?

- by Artem

This is a very open question, but I think it can be very beneficial for SQL readability. So you have a Java program, and you are trying to call a monster SQL statement from it, with many subqueries and joins. The starting point for my question is a string constant like this: static string MONSTER_STATEMENT = "SELECT " +…

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Java: Best approach to have a long list of variables needed all the time without consuming memory?

- by evilReiko

I wrote an abstract class to contain all rules of the application because I need them almost everywhere in my application. So most of what it contains is static final variables, something like this: public abstract class appRules { public static final boolean IS_DEV = true; public static final String…

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Terminating a long-executing thread and then starting a new one in response to user changing parameters via UI in an applet

- by user1817170

I have an applet which creates music using the JFugue API and plays it for the user. It allows the user to input a music phrase which the piece will be based on, or lets them choose to have a phrase generated randomly. I had been using the following method (successfully) to simply stop and start the music,…

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How to map a long integer number to a N-dimensional vector of smaller integers (and fast inverse)?

- by psihodelia

Given a N-dimensional vector of small integers is there any simple way to map it with one-to-one correspondence to a large integer number? Say, we have N=3 vector space. Can we represent a vector X=[(int32)x1,(int32)x2,(int32)x3] using an integer (int48)y? The obvious answer is "Yes, we can". But the…

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Using linq what is the easiest way to conv list<long> to list<int>?

- by acidzombie24

Using link what is the easiest way to convert a list of longs to a list of ints? I need it to be a list, if it cant be possibly i would like to see a solution with a int array or some kind f int container.

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256 Worker Role 3D Rendering Demo is now a Lab on my Azure Course

- by Alan Smith

Ever since I came up with the crazy idea of creating an Azure application that would spin up 256 worker roles (please vote if you like it ) to render a 3D animation created using the Kinect depth camera I have been trying to think of something useful to do with it. I have also been busy working on…

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CDN Rerouting on 404 (file not yet in synch with original storage)

- by Alan Ristic

Here is the problem. I've setup my app(on EC2) to store uploaded images directly on Amazon S3. I'd like to be able to serve static files(cdn) from my 'home' server so I wrote script that does sync from S3. But there is a window of (at least) one minute in synch. Now I see two solutions on the…

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Java ThreadPoolExecutor getting stuck while using ArrayBlockingQueue

- by Ravi Rao

Hi, I'm working on some application and using ThreadPoolExecutor for handling various tasks. ThreadPoolExecutor is getting stuck after some duration. To simulate this in a simpler environment, I've written a simple code where I'm able to simulate the issue. import…

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Storm Trident 'average aggregator

- by E Shindler

I am a newbie to Trident and I'm looking to create an 'Average' aggregator similar to 'Sum(), but for 'Average'.The following does not work: public class Average implements CombinerAggregator<Long>.......{ public Long init(TridentTuple tuple) …

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How long does a blocked connection from Iptables last? Is there a way to set the timeout?

- by Josh

iptables -A INPUT -m state --state NEW -m recent --set # If we receive more than 10 connections in 10 seconds block our friend. iptables -A INPUT -m state --state NEW -m recent --update --seconds 5 --hitcount 15 -j Log-N-Drop I have these two…

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Transactional Messaging in the Windows Azure Service Bus

- by Alan Smith

Introduction I’m currently working on broadening the content in the Windows Azure Service Bus Developer Guide. One of the features I have been looking at over the past week is the support for transactional messaging. When using the direct programming model and…

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Faceted search with Solr on Windows

- by Dr.NETjes

With over 10 million hits a day, funda.nl is probably the largest ASP.NET website which uses Solr on a Windows platform. While all our data (i.e. real estate properties) is stored in SQL Server, we're using Solr 1.4.1 to return the faceted search results as…

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Mac OS ? Assembly Language Esoteria

- by veryfoolish

I've been playing around with assembly and object files in general on Mac OS ? and was wondering if somebody could provide some edification. Specifically, I'm wondering what the extra code GCC generates when compiling the C file in the following example…

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Passing elapsed time to the update function from the game loop

- by Sri Harsha Chilakapati

I want to pass the time elapsed to the update() method as this would make easy to implement the animations and time related concepts. Here's my game-loop. public void gameLoop(){ boolean running = true; long gameTime = getCurrentTime(); …

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How do you decide site availability requirements?

- by Nathan Long

I work on a web application to file a specific kind of county taxes. Our company wants our state to mandate that counties must accept electronic filings (as opposed to paper) from any system that meets some sensible requirements for uptime, security,…

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Solarized Theme in Terminal Vim on Xubuntu

- by Dave Long

I recently setup my laptop with Xubuntu 13.04 and after installing and setting up all my dotfiles, which have previously worked fine with Ubuntu 13.04 with XFCE installed, my colorscheme in Vim is using the wrong colors. I dropped the terminalrc…

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Mac OS ? Assembly Language Esoteria

- by veryfoolish

I've been playing around with assembly and object files in general on Mac OS ? and was wondering if somebody could provide some edification. Specifically, I'm wondering what the extra code GCC generates when compiling the C file in the following…

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VMWare Fusion Folder Sharing Not Working with Server

- by Dave Long

I have a Ubuntu Server running in VMWare Fusion 3.1.2 on my MacBook Pro for Java development and all my projects sit on my Mac in ~/Workspace/ColdFusion. I had ColdFusion/ shared with my VM through the VMWare tools, and it was working perfectly…

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Hidden web standards behind Google "custom searchEngines"?

- by Hoàng Long

Today while playing with Google Chrome Omnibox, I notice a strange behavior. I guess there's some "hidden" web standard behind it, but can't figure it out. Here's how to reproduce: Go to http://edition.cnn.com/ Use the search function at the…

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