printf anomaly after “fork()”

printf anomaly after “fork()”

OS: Linux, Language: pure CI'm moving forward in learning C programming in general, and C programming under UNIX in a special case.I detected a strange (for me) behaviour of the printf() function after using a fork() call. Code#include

Handle file download from ajax post

Handle file download from ajax post

I have a javascript app that sends ajax POST requests to a certain URL. Response might be a JSON string or it might be a file (as an attachment). I can easily detect Content-Type and Content-Disposition in my ajax call, but once I detect th

Using a dispatch_once singleton model in Swift

Using a dispatch_once singleton model in Swift

I'm trying to work out an appropriate singleton model for usage in Swift. So far, I've been able to get a non-thread safe model working as:class var sharedInstance:TPScopeManager { get { struct Static { static var insta

What is the correct way to create a single-instance application?

What is the correct way to create a single-instance application?

Using C# and WPF under .NET (rather than Windows Forms or console), what is the correct way to create an application that can only be run as a single instance?I know it has something to do with some mythical thing called a mutex, rarely can

What is the “-->” operator in C++?

What is the “-->” operator in C++?

After reading Hidden Features and Dark Corners of C++/STL on comp.lang.c++.moderated, I was completely surprised that the following snippet compiled and worked in both Visual Studio 2008 and G++ 4.4.Here's the code:#include int mai

How can I get jQuery to perform a synchronous, rather than asynchronous, Ajax request?

How can I get jQuery to perform a synchronous, rather than asynchronous, Ajax request?

I have a JavaScript widget which provides standard extension points. One of them is the beforecreate function. It should return false to prevent an item from being created. I've added an Ajax call into this function using jQuery:beforecreat

Are PHP short tags acceptable to use?

Are PHP short tags acceptable to use?

Here's the information according to the official documentation: There are four different pairs of opening and closing tags which can be used in PHP. Two of those, <?php ?> and <script language="php"> </script>, are always available. Th

Why is the gets function so dangerous that it should not be used?

Why is the gets function so dangerous that it should not be used?

When I try to compile C code that uses the gets() function with GCC,I get thiswarning: (.text+0x34): warning: the `gets' function is dangerous and should not be used.I remember this has something to do with stack protection and security,

How to get mysqli error in different environments?

How to get mysqli error in different environments?

In my LOCAL/DEV environment, the mysqli query is performing OK. However, when I upload it on my WEBHOST environment, I got this error; Fatal error: Call to a member function bind_param() on a non-object in...Here is the code:global $mysqli

Changing the order of maven plugin execution

Changing the order of maven plugin execution

Hi I am very new to maven. I would like to change the order of maven plug-in execution.In my pom.xml I have maven-assembly plug-in and maven ant plug-in .I used maven assembly plug-in for creating zip file and maven ant plug-in for copying

SSRS date default with formula disables parameter

SSRS date default with formula disables parameter

When I set a default value formula for a date parameter in SSRS, such as:=CDate(”01/” & Month(Now) & “/” & Year(Now))or even:=Nowthe date parameter control becomes disabled with nothing in it. Does anyone know what simple thing (I am sure)

Put a button over an ImageView

Put a button over an ImageView

I'm newbie in Android.I would like to know if it's possible to put a button or another component over an ImageView. I've tried setting the image as a background image of a LinearLayout, but when I change between landscape and portrait mode,

How can I catch jQuery AJAX errors?

How can I catch jQuery AJAX errors?

When an AJAX request is submitted to a site, server-side errors are easily handled with the jQuery promise approach. .done(), .fail(), etc. However for some requests (e.g. to an invalid site or one that doesn't accept cross-origin requests)

Unbalanced calls to begin/end appearance transitions for

Unbalanced calls to begin/end appearance transitions for

While compiling the code i got "Unbalanced calls to begin/end appearance transitions for " warning. Here is my codeKVPasscodeViewController *passcodeController = [[KVPasscodeViewController alloc] init];passcodeController.delegate = se

Table layout panel scroll bar

Table layout panel scroll bar

given a table layout panel with 2 columns and many rows, how can i attatch a scroll bar to it as sometimes it grows much greater than the size of the form .Thank you 1:The TableLayoutPanel is an example of a ScrollableControl. You can th

Objective C equivalent to javascripts setTimeout?

Objective C equivalent to javascripts setTimeout?

I was wondering whether there is a solution to raise an event once after 30 seconds or every 30 seconds in CocoaTouch ObjectiveC. 1:There are a number of options.The quickest to use is in NSObject:- (void)performSelector:(SEL)aSelector w

What's the difference between staff, admin, superuser in django?

What's the difference between staff, admin, superuser in django?

Django has superuser, staff, admin… superuser and staff are in django.contib.auth.models.UserManager. Then there is the createsuperuser command of django-admin.Well, there are admin apps… What's the difference? 1:I take this from Django

TFS Error: Unable to determine the workspace for this solution

TFS Error: Unable to determine the workspace for this solution

I get this error when trying to "Go Online" with a project on a Visual Studio 2010 ALM project. The project was previously connected to a team project on Team Foundation Server (2010), but I had to reinstall both the SQL Server and the TFS

Splitting WPF interface across multiple Xaml files

Splitting WPF interface across multiple Xaml files

I am trying to create a user interface using XAML. However, the file is quickly becoming very large and difficult to work with. What is the best way for splitting it across several files.I would like to be able to set the content of an elem

Prevent redrawing of controls on resize for Windows Forms

Prevent redrawing of controls on resize for Windows Forms

I have a TableLayoutPanel which holds a dynamic number of controls inside a SplitterPanel. A user may want to resize the panel to fit these Controls to avoid use of a scroll bar. This creates jitter on the container resize as well as the

Add dynamic controls in ASP.NET, is there a difference between 1.1 and 2.0?

Add dynamic controls in ASP.NET, is there a difference between 1.1 and 2.0?

I am pretty sure back in the days of ASP.NET 1.0/1.1, controls created during runtime needs to be added before Page_Load event of the Page Lifecycle (i.e. inside Page_Init).Here's one article by Microsoft on it (for .NET 1.0/1.1):HOW TO: Dy

JavaFX bidirectional binding not working with the control becoming not editable

JavaFX bidirectional binding not working with the control becoming not editable

Give a very elementary class (imports resolved into javafx packages): public class T07 extends Application implements Initializable{with some fields representing controls defined in an .fxml file:@FXML TextField text01;and a data model that

how to use multiple threads to process large number of files stored in the local disk ( using file l

how to use multiple threads to process large number of files stored in the local disk ( using file l

how to use multiple threads in java to process large number of files stored in the local disk directory ( using file lock) 1:You don't want to read the files in parallell (disk I/O doesn't parallelize well). Better then to let a single t

Binding WPF ContextMenu MenuItem to UserControl Property vs ViewModel Property

Binding WPF ContextMenu MenuItem to UserControl Property vs ViewModel Property

I'm struggling to understand what is going on with the ContextMenu. I know it is rendered as a separate window, with a separate visual tree, so we can't use relative binding to bind a command exposed as a property of the user control. e.g.

What is the “best” free CMS for my needs? [closed]

What is the “best” free CMS for my needs? [closed]

I have the task to build a web-site for a smaller non-profit organization. I have a bit experience with ASP.NET but because ASP.NET hosting is rather expensive here in germany (we will also need a lot of webspace and traffic) and aslo becau