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• How to do a join that removes values?

  - by Georg

  Customers Holidays id | name customer_id | start | end ---+------ ------------+--------+------ 1 | Peter 1 | 5 | 10 2 | Simon 1 | 15 | 20 3 | Mary 2 | 5 | 20 How should my SQL query look that out of start=11,end=14 I get these customers: Peter Mary Is this even manageable with a simple SQL join, or do I need to use sub-queries?

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• Select a Master Page in Web Developer Express

  - by JP

  The dialog box for adding a web form to a web project in Visual Studio has a checkbox to 'Select Master Page'. This checkbox doesn't exist in the Web Developer Express Edition. Is there a simple alternative to attach a Master Page while adding a new web form in the Express Version?

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• Components for creating Archives

  - by John

  Hello, I'm searching for a simple,free component for creating archives with the capability of adding files to an already existing archive.Compressions is not a matter as much as performance so even "store" will be useful. Please help me find one.

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• Emulating hyperlink functionality in datawindow text fields

  - by mortalitysequence

  The idea is rather simple. Some datawindow (not web datawindow) varchar fields contain detailed descriptions. I was wondering if it is possible to provide the following (wikipedia-like) functionality to users: The ability to click (or dbl-click or whatever) on specific words of the text, while reading (which somehow should be indicated as clickable - it would be perfect if they could be colored blue but I don't think this is possible) and open a relevant window (or response). Do you think something like this could be implemented?

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• Wordpress: How to get to the page when inserting its page ID into numeric form input and clicking bu

  - by Daniel

  I would like to know if there's exists some simple code to get to the page i know its ID , I would like to create small input (no matter where in templates)from where the people can easily get to the page if they know it's page ID . I have the girls portfolio in wordpress - portfolio=pages x jobs in clubs offers=posts , I would like the girls portfolios to be easily findable by ID(s) , if possible the same for the posts=jobs in clubs The best solution little numeric input and send button

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• Accessing other controls by name in a Silverlight ControlTemplate

  - by Chris S

  I have a custom control that inherits from ContentControl. Inside the generic.xaml file is a simple Grid with 2 rows: Row 1 - A toggle button Row 2 - A StackPanel with a TextBlock, named "Stackpanel1" The ToggleButton has its own nested ControlTemplate which has VisualStates for Checked/Unchecked. Is it possible to reference "Stackpanel1" from inside the ToggleButton's control template somehow? In order to show or hide the stackpanel.

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• Automated EMail forwarding

  - by emailq

  Is there a simple way, preferably using LAMP tools, to register a domain, and setup the email system such that it takes all emails sent to [email protected] and forwards them to [email protected]. i.e., automate all the forwarding based on the username, so [email protected] would forward to [email protected], across all usernames.

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• Custom Task Queue in App Engine?

  - by demos

  I have created a new task queue and defined it in queue.yaml I am not sure how to start adding tasks to this queue? with the default queue it is simple taskqueue.add(...) how do we do it for a custom queue?

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• How do you name your servers? [closed]

  - by awells527

  How do you decide what you name your servers? Do you keep it simple/boring like svr-01, svr-02; make it descriptive like citrix-01, share-01; or do you make it creative like the names of the planets, peanuts characters, etc?

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• Iterate Multi-Dimensional Array with Nested Foreach Statement

  - by Tyler Murry

  I think this might be a pretty simple question, but I haven't been able to figure it out yet. If I've got a 2-dimensional array like so: int[,] = new int[2,3] { {1, 2, 3}, {4, 5, 6} }; What's the best way to iterate through each dimension of the array with a nested foreach statement?

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• jQuery jFlow plugin. How can I have more than one on a single page?

  - by Michael

  Hi, I'm using a very lovely and simple plugin called jFlow that gives me a basic content slider etc. However, I can see no documentation or help on how to get two (or more) on one page at the same time working seperately from one another. At the moment, if I set two up, they almost combine as one, despite having a different configuration from one another. Any help would be great, thanks. Michael.

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• Question about eval in PHP 5

  - by SpawnCxy

  Hi all, I have been doing PHP stuff for almost one year and I have never used the function eval() though I know the usage of it. But I found many questions about it in SO.So can someone show me a simple example in which it's necessary to use eval()?And is it a good or bad practice?

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• Java SFTP Transfer Library

  - by Claus Jørgensen

  Hi I'm looking for a dead simple Java Library to use for SFTP file transfers. I don't need any other features beyond that. I've tried Zehon's, but it's incredible naggy, and I think 8 jar files is a bit crazy for so little functionality as I require. And the library have to be free (as in free beer), and preferable Open Source (not a requirement). Thanks.

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• How would I convert decimal into binary?

  - by oni-kun

  All I really know is PHP and I used the decbin function etc, It was fairly easy to do. In this C++ program I want to do the same thing, just a simple number or string how would I do this?

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• Erlang programming exercises

  - by valya

  I'm learning Erlang. I've moved from Haskell so I don't want to and have to learn functional programming. But Erlang is quite specific because of the microprocesses. So, can you give me some examples which will be simple to test and measure and use all the power of Erlang?

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• Asynchronous vs Synchronous vs Threading in an iPhone App

  - by Coocoo4Cocoa

  I'm in the design stage for an app which will utilize a REST web service and sort of have a dilemma in as far as using asynchronous vs synchronous vs threading. Here's the scenario. Say you have three options to drill down into, each one having its own REST-based resource. I can either lazily load each one with a synchronous request, but that'll block the UI and prevent the user from hitting a back navigation button while data is retrieved. This case applies almost anywhere except for when your application requires a login screen. I can't see any reason to use synchronous HTTP requests vs asynchronous because of that reason alone. The only time it makes sense is to have a worker thread make your synchronous request, and notify the main thread when the request is done. This will prevent the block. The question then is bench marking your code and seeing which has more overhead, a threaded synchronous request or an asynchronous request. The problem with asynchronous requests is you need to either setup a smart notification or delegate system as you can have multiple requests for multiple resources happening at any given time. The other problem with them is if I have a class, say a singleton which is handling all of my data, I can't use asynchronous requests in a getter method. Meaning the following won't go: - (NSArray *)users { if(users == nil) users = do_async_request // NO GOOD return users; } whereas the following: - (NSArray *)users { if(users == nil) users == do_sync_request // OK. return users; } You also might have priority. What I mean by priority is if you look at Apple's Mail application on the iPhone, you'll notice they first suck down your entire POP/IMAP tree before making a second request to retrieve the first 2 lines (the default) of your message. I suppose my question to you experts is this. When are you using asynchronous, synchronous, threads -- and when are you using either async/sync in a thread? What kind of delegation system do you have setup to know what to do when a async request completes? Are you prioritizing your async requests? There's a gamut of solutions to this all too common problem. It's simple to hack something out. The problem is, I don't want to hack and I want to have something that's simple and easy to maintain.

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• Tail recursion in C++

  - by Phenom

  Can someone show me a simple tail-recursive function in C++? Why is tail recursion better, if it even is? What other kinds of recursion are there besides tail recursion?

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• How to skip parentheses on Netbeans with enter?

  - by nunos

  So I have been programming in C++ with Eclipse and have the habit of hitting enter to skip parentheses (anyone who has ever used eclipse probably knows what I am talking about). I have recently started learning Java and decided to use NetBeans, mostly due to the much more simple interface. However, I would like to know if there a way to skip the (), [], < and "" on enter just like what happens in Eclipse in NetBeans. Thanks.

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• How can I see Eclipse compilation details log.

  - by alex2k8

  Is it possible to see Eclipse compilation details logs? After a number of project changes, the compilation speed became very low (~10 seconds after a simple file change). Whould be nice to see, what compilation steps take most time.

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• Shortest Path algorithm of a different kind

  - by Ram Bhat

  Hey guys, Lets say you have a grid like this (made randomly) Now lets say you have a car starting randomly from one of the while boxes, what would be the shortest path to go through each one of the white boxes? you can visit each white box as many times as you want and cant Jump over the black boxes. The black boxes are like walls. In simple words you can move from white box to white box only.. You can move in any direction, even diagonally.

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• Why is float getting rounded off in this Objective C / Cocoa code

  - by Amarsh

  I am doing a simple : float x = 151.185436; printf("x=%f",x); and the result is x=151.185440 Whats wrong here? I want to retain and print my original value of 151.185436 Thanks Amarsh

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• What are void pointers for in C++?

  - by Dr. Acula

  My question is simple: What are void pointers for in C++? (Those things you declare with void* myptr;) What is their use? Can I make them point to a variable of any type?

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• Synchronous and asynchronous callbacks

  - by csharpbaby

  I get confused with some terms while reading MSDN documents and code samples. What are callbacks in C#? In particular, what are synchronous and asynchronous callbacks ? Please explain these from a layman's point of view. Also, please explain the IAsyncResult interface. How can we implement it? (with very simple example) Thanks in advance. EDITED: Fixed spelling, grammar

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• Bang Notation and Dot Notation in VBA and MS-Access

  - by Nitrodist

  While perusing an application that I'm documenting, I've run across some examples of bang notation in accessing object properties/methods, etc. and in other places they use dot notation for what seems like the same purpose. Is there a difference or preference to using one or the other? Some simple googling only reveals limited information on the subject with some people actually using it in opposite cases. Perhaps there is a coding standards section from MS somewhere that indicates the method of madness?

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• Rails 3.0 beta send_file issues

  - by Amar

  Have you any one try sending file to client_side send_file(url),send_file("#{Rails.root}/public/images/rails.png",:type => "image/png") it gives an error for any file which i am sending Proc:0xb74e606c@/home...../gems/actionpack-3.0.0.beta/lib/action_controller/metal/streaming.rb:95 as simple

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