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• Qt send signal to main application window

  - by dumbquestion

  I need a QDialog to send a signal to redraw the main window. But connect needs an object to connect to. So I must create each dialog with new and explicitly put a connect() every time. What I really need is a way of just sending MainWindow::Redraw() from inside any function and having a single connect() inside Mainwindow to receive them. But you can't make a signal static and dialogs obviously don't inherit from MainWindow.

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• runModalForWindow throttles http requests

  - by Nikita Rybak

  I have url connection, which normally works fine NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:delegate]; But when I create a modal window, no request ever receives response: [NSApp runModalForWindow:window]; If I comment this line out, thus creating a 'standard' window, everything works. I tried implementing all methods from NSURLConnectionDelegate, not a single of them called. I suspect this is something about 'run loops', but have little experience in this area. Does anybody have experience in this? Thank you

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• How to specify number of headers in section UITableView.

  - by Mr. McPepperNuts

  if ([tempArray containsObject: [sectionInfo indexTitle]]) { return nil; }else { [tempArray addObject: [sectionInfo indexTitle]]; return [sectionInfo indexTitle]; } return [sectionInfo indexTitle]; The code above groups the cells in alphabetical order but displays a blank header instead of the appropriate title. Could this possibly be because I did not specify the number of headers? This would naturally be a single header for every letter in the alphabet.

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• Determining when or when not to escape output

  - by Ygam

  I have a page, where I have approximately 90 items I need to output. Most of them are object properties (I am using ORM so these objects map to my database tables). But the question is, do I have to escape each of those 90 outputs by applying functions to each (in my case, the htmlspecialchars)? Wouldn't that add a bit of an overhead (calling a single function 90 times)?

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• GDI+: Set all pixels to given color

  - by Charles

  What is the best way to set the RGB components of every pixel in a System.Drawing.Bitmap to a single, solid color? If possible, I'd like to avoid manually looping through each pixel to do this. Note: I want to keep the same alpha component from the original bitmap. I only want to change the RGB values. I looked into using a ColorMatrix or ColorMap, but I couldn't find any way to set all pixels to a specific given color with either approach.

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• Handling updates to a Cached DataTable when the users session holds DataViews based on that DataTabl

  - by minty

  My website runs on a single server. I am caching a DataTable. Each session has a refernce to it's own DataView referring to that DataTable. What I am worried about is when I need to make changes to the underlying datatable will they propagate to each of the sessions references to it. Or is there a better way to handle this situation.

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• multiple params in a mysql statement

  - by Kaartz

  i use this statement for a single where condition ('SELECT * FROM users WHERE id = ?', 1) if I want to check two conditions, how would I do that ('SELECT * FROM users WHERE id=? AND age=?', 1,23)- is this correct?

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• Weirdest occurrence ever, UIButton @selector detecting right button, doing wrong 'else_if'?

  - by Scott

  So I dynamically create 3 UIButtons (for now), with this loop: NSMutableArray *sites = [[NSMutableArray alloc] init]; NSString *one = @"Constution Center"; NSString *two = @"Franklin Court"; NSString *three = @"Presidents House"; [sites addObject: one]; [one release]; [sites addObject: two]; [two release]; [sites addObject: three]; [three release]; NSString *element; int j = 0; for (element in sites) { UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; //setframe (where on screen) //separation is 15px past the width (45-30) button.frame = CGRectMake(a, b + (j*45), c, d); [button setTitle:element forState:UIControlStateNormal]; button.backgroundColor = [SiteOneController myColor1]; [button addTarget:self action:@selector(showCCView:) forControlEvents:UIControlEventTouchUpInside]; [button setTag:j]; [self.view addSubview: button]; j++; } The @Selector method is here: - (void) showCCView:(id) sender { UIButton *button = (UIButton *)sender; int whichButton = button.tag; NSString* myNewString = [NSString stringWithFormat:@"%d", whichButton]; self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; self.view.backgroundColor = [UIColor whiteColor]; UINavigationBar *cc = [SiteOneController myNavBar1:@"Constitution Center Content"]; UINavigationBar *fc = [SiteOneController myNavBar1:@"Franklin Court Content"]; UINavigationBar *ph = [SiteOneController myNavBar1:@"Presidents House Content"]; if (whichButton = 0) { NSLog(myNewString); [self.view addSubview:cc]; } else if (whichButton = 1) { NSLog(myNewString); [self.view addSubview:fc]; } else if (whichButton = 2) { NSLog(myNewString); [self.view addSubview:ph]; } } Now, it is printing the correct button tag to NSLog, as shown in the method, however EVERY SINGLE BUTTON is displaying a navigation bar with "Franklin Court" as the title, EVERY SINGLE ONE, even though when I click button 0, it says "Button 0 clicked" in the console, but still performs the else if (whichButton = 1) code. Am I missing something here?

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• What is the difference between the various unistd.h under /usr/include in Linux ?

  - by Marwan

  Under the /usr/include directory in Linux i entered the command: find -type f -name unistd.h which gave the following output: ./unistd.h ./linux/unistd.h ./asm-generic/unistd.h ./bits/unistd.h ./asm/unistd.h ./sys/unistd.h my question is, what is the purpose of each unistd.h, since there is only one definiton of that file in the single unix specification ? Thanks in advance.

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• How to use global caching in php?

  - by user63898

  ello all im new to php and server scripting ( coming from the java/cpp background ) my question is , if i like to be able to build some kind of single tone cache that will hold me data in memory in all the web application life , something that when i start the web server it will start main cache that will server the web application not inside sessions static cache like singletone map in c++/java that that leaves all the time what are my options ?

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• Linq to SQL - Returning two values with one query

  - by Sir Psycho

  Hi, Is it possible to return a single value and an enumerable collection using LINQ to SQL? The problem is, I'm trying to do paging across a large recordset. I only want to return 10 rows at a time so I'm using .Skip(20).Take(10) approach. However I need to know the total number of records so I can show an appropriate page x of y. Trying to avoid two separate queries. Thanks

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• How do you create a transaction that spans multiple statements in Python with MySQLdb?

  - by Fast Fish

  I know that with an InnoDB table, transactions are autocommit, however I understand that to mean for a single statement? For example, I want to check if a user exists in a table, and then if it doesn't, create it. However there lies a race condition. I believe using a transaction prior to doing the select, will ensure that the table remains untouched until the subsequent insert, and the transaction is committed. How can you do this with MySQLdb and Python?

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• One Common event for all controls in Silverlight

  - by Veejay

  I have a couple of textblock controls and all of them are calling a single event. But i have to wire all of them invidividually using TextBlock1.MouseMove += new MouseEventHandler(TextBlock_MouseMove); TextBlock2.MouseMove += new MouseEventHandler(TextBlock_MouseMove); TextBlock3.MouseMove += new MouseEventHandler(TextBlock_MouseMove); Is there a way that I can apply the mouse move to all TextBlock without wiring them one by one

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• writing to an ioport resulting in segfaults...

  - by Sniperchild

  I'm writing for an atmel at91sam9260 arm 9 cored single board computer [glomation gesbc9260] Using request_mem_region(0xFFFFFC00,0x100,"name"); //port range runs from fc00 to fcff that works fine and shows up in /proc/iomem then i try to write to the last bit of the port at fc20 with writel(0x1, 0xFFFFFC20); and i segfault...specifically "unable to handle kernel paging request at virtual address fffffc20. I'm of the mind that i'm not allocating the right memory space... any helpful insight would be great...

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• Whats the best way to send multiple variables in a query string within a URL

  - by Andy

  I have a client who is wanting to create a link which contains product codes so that his customers hit a page with just those products displayed in an attempt to increase conversion rates from affilliate sites. My question is whats the best way to send these multiple products in a single URL For example: http://www.mydomain.co.uk/bespoke-list.php?catNo=234-324-232-343 Obviously then the site would grab the codes from the string and display them... We're going to be using PHP! Thanks in advance.

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• PHP running as a FastCGI application (php-cgi) - how to issue concurrent requests?

  - by Sbm007

  Some background information: I'm writing my own webserver in Java and a couple of days ago I asked on SO how exactly Apache interfaces with PHP, so I can implement PHP support. I learnt that FastCGI is the best approach (since mod_php is not an option). So I have looked at the FastCGI protocol specification and have managed to write a working FastCGI wrapper for my server. I have tested phpinfo() and it works, in fact all PHP functions seem to work just fine (posting data, sessions, date/time, etc etc). My webserver is able to serve requests concurrently (ie user1 can retrieve file1.html at the same time as user2 requesting some_large_binary_file.zip), it does this by spawning a new Java thread for each user request (terminating when completed or user connection with client is cancelled). However, it cannot deal with 2 (or more) FastCGI requests at the same time. What it does is, it queues them up, so when request 1 is completed immediately thereafter it starts processing request 2. I tested this with 2 PHP pages, one contains sleep(10) and the other phpinfo(). How would I go about dealing with multiple requests as I know it can be done (PHP under IIS runs as FastCGI and it can deal with multiple requests just fine). Some more info: I am coding under windows and my batch file used to execute php-cgi.exe contains: set PHP_FCGI_CHILDREN=8 set PHP_FCGI_MAX_REQUESTS=500 php-cgi.exe -b 9000 But it does not spawn 8 children, the service simply terminates after 500 requests. I have done research and from Wikipedia: Processing of multiple requests simultaneously is achieved either by using a single connection with internal multiplexing (ie. multiple requests over a single connection) and/or by using multiple connections Now clearly the multiple connections isn't working for me, as everytime a client requests something that involves FastCGI it creates a new socket to the FastCGI application, but it does not work concurrently (it queues them up instead). I know that internal multiplexing of FastCGI requests under the same connection is accomplished by issuing each unique FastCGI request with a different request ID. (also see the last 3 paragraphs of 'The Communication Protocol' heading in this article). I have not tested this, but how would I go about implementing that? I take it I need some kind of FastCGI Java thread which contains a Map of some sort and a static function which I can use to add requests to. Then in the Thread's run() function it would have a while loop and for every cycle it would check whether the Map contains new requests, if so it would assign them a request ID and write them to the FastCGI stream. And then wait for input etc etc, As you can see this becomes too complicated. Does anyone know the correct way of doing this? Or any thoughts at all? Thanks very much. Note, if required I can supply the code for my FastCGI wrapper.

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• How to paste special in Excel using Applescript?

  - by Ed Taylor

  I am using Applescript to create a macro where data is transferred from several files to a single file. Data is copied with copy range the_range destination clipboard and pasted with paste worksheet active sheet destination range "A1" The problem is that most of the formatting is lost and I have not managed to get the "paste special"-syntax correct. I have downloaded "Excel2004AppleScriptRef.pdf".

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• how do you add a condition to a lambda expression

  - by ooo

  if i have this code today to find out a sum total using LINQ: return (MyArray.Sum(r => r.Trips); and i want to only include itms where r.CanDrive == true. can you add a condition into a single linke lambda expression? how would you do this

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• Blit Queue Optimization Algorithm

  - by martona

  I'm looking to implement a module that manages a blit queue. There's a single surface, and portions of this surface (bounded by rectangles) are copied to elsewhere within the surface: add_blt(rect src, point dst); There can be any number of operations posted, in order, to the queue. Eventually the user of the queue will stop posting blits, and ask for an optimal set of operations to actually perform on the surface. The task of the module is to ensure that no pixel is copied unnecessarily. This gets tricky because of overlaps of course. A blit could re-blit a previously copied pixel. Ideally blit operations would be subdivided in the optimization phase in such a way that every block goes to its final place with a single operation. It's tricky but not impossible to put this together. I'm just trying to not reinvent the wheel. I looked around on the 'net, and the only thing I found was the SDL_BlitPool Library which assumes that the source surface differs from the destination. It also does a lot of grunt work, seemingly unnecessarily: regions and similar building blocks are a given. I'm looking for something higher-level. Of course, I'm not going to look a gift horse in the mouth, and I also don't mind doing actual work... If someone can come forward with a basic idea that makes this problem seem less complex than it does right now, that'd be awesome too. EDIT: Thinking about aaronasterling's answer... could this work? Implement customized region handler code that can maintain metadata for every rectangle it contains. When the region handler splits up a rectangle, it will automatically associate the metadata of this rectangle with the resulting sub-rectangles. When the optimization run starts, create an empty region handled by the above customized code, call this the master region Iterate through the blt queue, and for every entry: Let srcrect be the source rectangle for the blt beng examined Get the intersection of srcrect and master region into temp region Remove temp region from master region, so master region no longer covers temp region Promote srcrect to a region (srcrgn) and subtract temp region from it Offset temp region and srcrgn with the vector of the current blt: their union will cover the destination area of the current blt Add to master region all rects in temp region, retaining the original source metadata (step one of adding the current blt to the master region) Add to master region all rects in srcrgn, adding the source information for the current blt (step two of adding the current blt to the master region) Optimize master region by checking if adjacent sub-rectangles that are merge candidates have the same metadata. Two sub-rectangles are merge candidates if (r1.x1 == r2.x1 && r1.x2 == r2.x2) | (r1.y1 == r2.y1 && r1.y2 == r2.y2). If yes, combine them. Enumerate master region's sub-rectangles. Every rectangle returned is an optimized blt operation destination. The associated metadata is the blt operation`s source.

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• Selecting and Copying a Random File Several Times

  - by user1252778

  [Edit: see below for final code] I have the following code and I'm trying to figure out where to insert the random.choice code to make it select a single file, copy it, and repeat (here 6 times). import os import shutil import random dir_input = str(input("Enter Source Directory: ")) src_files = (os.listdir(dir_input)) for x in range (0,5): print ('This is the %d time' % x) for file_name in src_files: full_file_name = (os.path.join(dir_input, file_name)) if (os.path.isfile(full_file_name)): print ('copying...' + full_file_name) shutil.copy(full_file_name, r'C:\Dir')) else: print ('Finished!')

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• String format options for int in .NET

  - by Sruly

  I want to convert an int to a string but if it is a single digit I want to add a leading 0 Is that one of the built in format options? or do I have to do it manually?

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• Mounting a Nested SSH Location

  - by Brandon Pelfrey

  I have a server that is only SSH-accessible to machines within a network and my only access to that network from the outside world is a single publicly-SSH-accessible node. Is there some way that I can mount the nested machine from the outside? Me - Public SSH-accessible Node - Internal SSH-accessible Machine Thanks!

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• Getting started with mvim, how to manage a project?

  - by zengr

  Hi, I have started out with macvim and now fairly comfortable with the navigation (on a single file) and now I need to write a whole project (say rails) using mvim. In textmate, you have mate project_dir which opens the project in a side drawer, so my question is: Is there a similar feature in mvim? How can a complete project managed in traditionally in macvim? Links to some write-ups are welcomed.

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• Is there a multi-blog admin interface for WordPress blogs installed completely separately?

  - by Ballstein

  I'm an administrator of 10-20 separate WordPress blogs, and it's a big pain for me to login to all of them separately. Is there some sort of interface that allows me to do a single-sign-on administration of all of them, like there is under a WordPress MU umbrella? If so, what's it called? I don't even know the term I'd use to search for this.

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• easy, straightforward way to package a python program for debian?

  - by Jeremiah Rose

  i'm having trouble navigating the maze of distribution tools for python and debian; cdbs, debhelper, python-support, python-central, blah blah blah .. my application is a fairly straightforward one - a single python package (directory containing modules and a __init__.py), a script for running the program (script.py) and some icons and menu items (.desktop files). is there a simple straightforward way to make a .deb file out of these, or should i brave the nonsensical tools listed above?

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