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• Possible to exclude or reorder a column from `*` ?

  - by Earlz

  Is it possible to exclude a column from a select * from table statement with SQL Server? I have a need for this and this is my only option other than parsing a raw SQL string to get out the required field names (I really don't want to do that). Just to be bold. When the query is made I do not have access to the list of fields needed from the table but I do know which field I do not need. This is part of a complex multi-part query. Surely there must be some way even if it's "hackish" such as using table variables or views My other option is to reorder the columns. My problem is with ExecuteScalar SQL functions which get the first row and first column.

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• Gaining Reference to the Dialog from Dialog content

  - by coffeeaddict

  Here's my scenario: I've got a div on Page A. When an event happens (whatever I define, a click, whatever), I do a div.Dialog, set its properties and open it The data inside is returned from an async .ajax call that grabs the data from a url and appends it to the div by calling div.html(data) inside the .ajax callback, so it's essentially loading a PageB by getting the data (content) and appending it to the div that's calling the dialog("open")...nothing special here I don't think. My question: In Page B, how do I reference the dialog so I can do some things to it? For instance in Page B's content that I received back from that .ajax call and added to the div via .html(data), there is a button and when clicked I need to close the dialog. Right now my buttons are not working because one of them closes out the dialog and the other should redirect to a new page but both do not work now because I have no reference to the dialog that it's in to manipulate it.

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• from JS to iphone dev - what's the best language to start with?

  - by Enkai

  I am a total beginner and would like to eventually learn to develop for the iphone. I have just done a beginner's CS course where the language we learned was JavaScript. We studied basic concepts like: variables, arrays, loops (for,while,if,if..else..), properties and functions. I'm wondering if I am starting in the right/wrong place by following this book: Learn C on the Mac by Dave Mark? I have read a few chapters and am finding it a bit hard to get my head around the way that C works, for example the way that Strings are printed seems overly complicated as compared to JS. Do you think that JS was the wrong language to start off with and would I be better to go from JS straight to Objective-C rather than to C? I have tried to read up on previous threads on the merits/demerits of learning C first but haven't found any that relate JS to learning C/Obj C/ Cocoa. Any advice appreciated as I am very new to this. Thanks

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• list(of byte) to Picturebox

  - by michael

  I have a jpeg file that is being held as a list(of Byte) Currently I have code that I can use to load and save the jpeg file as either a binary (.jpeg) or a csv of bytes (asadsda.csv). I would like to be able to take the list(of Byte) and convert it directly to a Picturebox without saving it to disk and then loading it to the picturebox. If you are curious, the reason I get the picture file as a list of bytes is because it gets transfered over serial via an industrial byte oriented protocol as just a bunch of bytes. I am using VB.net, but C# example is fine too.

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• Minimizing calls to database in rails

  - by ming yeow

  Hi guys, i am familiar with memcached and eager loading, but neither seems to solve the problem i am facing. My main performance lag comes from hundreds of data retrieval calls from the database. The tricky thing is that I do not know which set of users i need to retrieve until i have several steps of computation. I can refactor my code, but i was wondering how you experts handle this situation? I think it should be a fairly common situation def newsfeed - find out which users i need - retrieve those users via DB - find out which events happened for these users - for each of those events - retrieve new set of users - find out which groups are relevant - for each of those groups - retrieve new set of users - etc, etc end

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• Is there any way that I can draw fast a chart with too many series? [on hold]

  - by Maryam Bagheri

  I have a project that need to draw a fast chart with many series. I must change start position of drawing to a favor position when user want. .Net Chart is slow in lots of series. I wanted to use this library: http://www.codeproject.com/Articles/32836/A-simple-C-library-for-graph-plotting?msg=4109664#xx4109664xx but loading speed is too slow when count of series increases. When I plot the chart, I must invalidate the chart for updates, drawing speed will be too slow if there are too many series. I need at least 900 series in a chart for this project. I wanted to use multiple layer series to decrease invalidate rate with the idea: http://www.codeproject.com/Articles/84833/Drawing-multiple-layers-without-flicker I do not know this idea would be helpful. I tested LightningChart control but it could not help me.

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• Using JQuery Lightbox within AJAX loaded content

  - by James

  Hey. So this is probably a very noob problem but I'm not good enough to fix it. Basically... I have a gallery that I am loading into the page via AJAX. It looks simply like this: <div id="gallery"> <a href="Image1.jpg"><img src="Image1Thumb.jpg" /></a> <a href="Image2.jpg" title=""><img src="Image2Thumb.jpg" /></a> </div> But because it's being loaded in as AJAX content, JQuery/Lightbox is not working and I've no idea how can I get the script to run/recognise this newly loaded content. Thanks! [Note: The JQuery Lightbox I am using.]

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• Drop Columns R Data frame

  - by Btibert3

  I have a number of columns that I would like to drop from a data frame. I know that we can drop them using something like: df$x <- NULL but I was hoping to do this with less commands. Also, I know that I could use this: df[ -c(1,3:6, 12) ] but I am concerned that the relative position of my variables may change. Given how powerful R is, I figured I would ask to see if there is another way beyond dropping each column 1 by 1. Thanks in advance.

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• Toolbar disappeared in Visual Studio

  - by j-t-s

  Visual Studio ate my toolbar, I opened a solution for a project I've been working on for a few months, and the toolbar has 135 buttons on it, and while it was loading, the whole toolbar flickered like it was trying to give me a seizure or something, and then it dissappeared. Now when I click Debug, it won't let me do it because all the resources are missing!? I'm using: Visual Studio 2010 C# Express Windows 7 Home Premium 64-bit. I have searched Google and found nothing related. I'm hoping that Visual Studio can also somehow make bowel movements so I can find those missing resources and put everything back together again, but I don't think that's a likely scenario... Has anybody ever experienced this before, and if so, are there any updates/fixes for this?

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• ASP.NET - How can I cache user details for the duration of their visit?

  - by rockinthesixstring

  I've built a Repository that gets user details Public Function GetUserByOpenID(ByVal openid As String) As User Implements IUserRepository.GetUserByOpenID Dim user = (From u In dc.Users Where u.OpenID = openid Select u).FirstOrDefault Return user End Function And I'd like to be able to pull those details down IF the user is logged in AND IF the cached data is null. What is the best way to create a User object that contains all of the users details, and persist it across the entire site for the duration of their visit? I Was trying this in my Global.asax, but I'm not really happy using Session variables. I'd rather have a single object with all the details inside. Private Sub BaseGlobal_AcquireRequestState(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.AcquireRequestState If Session("UserName") Is Nothing AndAlso User.Identity.IsAuthenticated Then Dim repo As UrbanNow.Core.IUserRepository = New UrbanNow.Core.UserRepository Dim _user As New UrbanNow.Core.User _user = repo.GetUserByOpenID(User.Identity.Name) Session("UserName") = _user.UserName() Session("UserID") = _user.ID End If End Sub

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• Arrange 0's & 1's in a array

  - by Ganesh M

  This is one of an interview question which I had recently. I would like to know others perception of approach for this problem. Question: You are given a structure which holds an employee details with two elements as int Deptartment and string Name. struct Employee { string Name; int Dept; } You are given details of N Employees among which there are N/2 employees Dept are 0's and N/2 employees dept are 1's arranged in some random order. You need to sort the employee details based on their Dept value and it should be stable i.e., the order of 1s and 0s in the original record should be maintained. For example, given the following sample data: Name Dept X1 0 X2 1 X3 0 X4 1 X5 0 after sorting the result should be: Name Dept X2 1 X4 1 X1 0 X3 0 X5 0 The algorithm should be stable and the complexity should be o(N), with constant space for additional variables (which means sorting should be done in-place).

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• Forcing Reload of View when returning from FlipSideView of Utility Application

  - by Chris McCall

  I've got a Utility Application for iPhone 3.1.3. I have my main view loading fine. I flip over to the flipside view of the utility app and change some settings. How can I call the code I've currently got in viewDidLoad in the main view to refresh it, as settings have changed? Do I create a public method and call it from the viewDidUnload method of the flipside view? Do I call viewDidLoad directly? What's the best way to do this?

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• How can I get cmake to find my boost installation

  - by BD at Rivenhill

  I have installed the most recent version of boost in /usr/local (with includes in /usr/local/boost and libraries in /usr/local/lib/boost) and I am now attempting to install Wt from source, but cmake (version 2.6) can't seem to find the boost installation. It tries to give helpful suggestions about setting BOOST_DIR and Boost_LIBRARYDIR, but I haven't been able to get it to work by tweaking these variables. The most recent error message that I get is that it can't find the libraries, but it seems to indicate that it is using "/usr/local/include" for the include path, which isn't correct (and I can't seem to fix it). Does anybody have a solution for this off the top of their head, or do I need to go mucking around inside cmake to figure it out?

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• Is there away to load a page only once with AJAX?

  - by digitup

  I have an AJAX call to load a function once the page is loaded, the function opens a lightbox a like frame with some data. The issue is that if I click on close (lightbox frame), the page loads again and again loading the frame so the use never reaches the page under the layer of frame since the frame load on infinite loop. The Ajax is repeating calling the function I guess but I would like to load the frame once and when the user clicks X (close) he may return to the original page. $(document).ready(function(){ var city = $('#citycode').html(); $.ajax({ //when page is loaded, fire the following function success: function(){ //the function to be fired located in the page in seperate file openX(city + //some other parameters); }}); }); Any tips?

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• echoing our parts of an Array?

  - by Wes

  I have the following array that I get as an output from facebook: http://www.paste.to/v/1jntlnml With the following code: $stream = $facebook->api_client->stream_get('',128342905144,'0','0',30,'','','',''); foreach($stream as $wallpost) { echo '<pre>'; print_r($wallpost); echo '</pre>'; } So I get the data that I need, but I want to call the individual variables within this array. For example, echo out the [message] for each post. Since it only loops once, I cant echo $wallpost['message'] or anything similar. any idea?

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• Objective C memory management question with NSArray

  - by Robert

  I am loading an array with floats like this: NSArray *arr= [NSArray arrayWithObjects: [NSNumber numberWithFloat:1.9], [NSNumber numberWithFloat:1.7], [NSNumber numberWithFloat:1.6], [NSNumber numberWithFloat:1.9],nil]; Now I know this is the correct way of doing it, however I am confused by the retail counts. Each Object is created by the [NSNumber numberWithFloat:] method. This gives the object a retain count of 1 dosnt it? - otherwise the object would be reclaimed The arrayWithObjects: method sends a retain message to each object. This means each object has a retain cont of 2. When the array is de-allocated each object is released leaving them with a retain count of 1. What have I missed?

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• php string to array and split

  - by RussP

  Hi folks Looking for suggestions as to the best way to do this (I know there are many options): take a variable like this: $args = ('post_type=post&order_by=DESC&limit=10'); the create a function to convert that variable into parts like this: $post_type = post; $order_by = DESC; $limit= 10; Reason is I want a client to be able to use a string like the first to pass variables to a sql query in much the same way (but doesn't have to be exact) as you can do it in WordPress.

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• Error : The Type Initializer of Daemon.Global threw an exception in c#

  - by srk

  I am using the below class file, where some variables are declared to use in the entire application. Now I used that variable BlockLogOut in another class file to make the value true. I just put this below line and getting error in it.. TypeInitializationException Global.BlockLogOut = True; The weird thing is, it was working fine for many months and i am getting this error now on the above line. Of course i was modifying some other stuffs in the application, but surely not this class file. What would have been the problem? namespace Daemon { class Global { public static bool BlockLogOut = false; } }

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• Facebook: Requires a valid user is specified (either via the session or via the API parameter for specifying the user.

  - by Stoic

  Hey Everyone, I am receiving this error: Requires a valid user is specified (either via the session or via the API parameter for specifying the user. when I am trying to utilize Facebook's FB.api with JS SDK for method: users.hasAppPermission I am constantly receiving this error, for any uid I pass on. Here is my code: $(document).ready(function() { var perms_requested = <?php echo PERMS;?>; var user_id = <?=$user_id;?>; $('#perms_check').html(loading); ask_for_perms(perms_requested, function(data) { $('#perms_check').html(data); }); function ask_for_perms(perms_requested,cb) { var request = []; $.each(perms_requested,function(i,permission) { FB.api({ method: 'users.hasAppPermission', ext_perm: permission, uid: user_id }, function(response) { if (response == 0) request.push(permission); if (i == perms_requested.length - 1) cb(request.join(', ')); }); }); } }); Also, I am utilizing nearly the same code in some other part of the same application, and I am getting fine results with that.

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• Spring / Hibernate project with Tomcat and JQuery.

  - by Tiago

  Hi, I have a Dynamic Web Project that implements Spring and Hibernate using a Tomcat Server (v6). I'm lauching Tomcat with my Eclipse Galileo and I'm not getting any errors in the console but Tomcat is rendering my webpages randomly. The page just keep loading but without displaying anything, there's nothing on the console either. When I go in debug mode, it goes throught the right steps, everything seems alright. When I display the source code on the web browser (Firefox latest build) it shows me the right code that is needed to display the page I called. What am I not getting here? Plus when I stop Tomcat, it renders a part of the page. I'm wondering if JQuery could be the problem? The thing is that it's a collaborative project and that the others managed to run the web application in the most alright way. Please, share your experience with me.

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• Counting multiple rows in MySQL in one query

  - by diggersworld

  I currently have a table which stores a load of statistics such as views, downloads, purchases etc. for a multiple number of items. To get a single operation count on each item I can use the following query: SELECT , COUNT() FROM stats WHERE operation = 'view' GROUP BY item_id This gives me all the items and a count of their views. I can then change 'view' to 'purchase' or 'download' for the other variables. However this means three separate calls to the database. Is it possible to get all three in one go?

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• Google Maps API - load the US

  - by hjk

  I am new to google maps api. I'd like suggestions on achieving the following functionality: whenever the page loads, the map will load centered around the US. Imagine a box around the US with given lat/longs specifying the minimum and maximum boundaries. I need the map to load at the appropriate zoom (and zoom needs to be disabled) such that this box composes the entire map. Basically, I'm wondering if there is a function that loads the map based on lat/long boundaries (or some way to acheive this), rather then loading the map given a zoom level.

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• Parsing C# Script into Java

  - by pantaryl

  I'm looking for a way to easily read in a C# file and place it into a Java Object for database storage (storing the class name, functions, variables, etc). I'm making a Hierarchical State Machine AI Building Tool for a game I'm creating and need to be able to import an existing C# file and store it in a database for retrieval in the future. Does anyone know of any preexisting libraries for parsing C# files? Something similar to JavaParser? Thanks everyone! EDIT: This needs to be part of my Java Project. I'll be loading in the C# files through my Java Application and saving it into my db4o database.

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• Is it bad practice to initialize a variable to a dummy value?

  - by froadie

  This question is a result of the answers to this question that I just asked. It was claimed that this code is "ugly" because it initializes a variable to a value that will never be read: String tempName = null; try{ tempName = buildFileName(); } catch(Exception e){ ... System.exit(1); } FILE_NAME = tempName; Is this indeed bad practice? Should one avoid initializing variables to dummy values that will never actually be used? (EDIT - And what about initializing a String variable to "" before a loop that will concatenate values to the String...? Or is this in a separate category? e.g. String whatever = ""; for(String str : someCollection){ whatever += str; } )

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• Why does the assignment operator return a value and not a reference?

  - by Nick Lowman

  I saw the example below explained on this site and thought both answers would be 20 and not the 10 that is returned. He wrote that both the comma and assignment returns a value, not a reference. I don't quite understand what that means. I understand it in relation to passing variables into functions or methods i.e primitive types are passed in by value and objects by reference but I'm not sure how it applies in this case. I also understand about context and the value of 'this' (after help from stackoverflow) but I thought in both cases I would still be invoking it as a method, foo.bar() which would mean foo is the context but it seems both result in a function call bar(). Why is that and what does it all mean? var x = 10; var foo = { x: 20, bar: function () {return this.x;} }; (foo.bar = foo.bar)();//returns 10 (foo.bar, foo.bar)();//returns 10

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